Einstein Toolkit Documentation - User contributions [en]

Seminar-2013 02 04-participants

2013-02-01T13:46:18Z

Tbode: /* List of participants for Christian Reisswig's presentation on 2012-02-04 */

==List of participants for Christian Reisswig's presentation on 2012-02-04==

(see http://einsteintoolkit.org/seminars/2013_02_04/ for details)

We will use WebEx for Christian's presentation. You need to register to receive an invitation email for WebEx about one hour before the presentation. You register by '''adding your name and email address''' to the list below. Please register at least two hours before the talk begins. If you cannot / do not want to register in public, then send email to Erik Schnetter <eschnetter@perimeterinstitute.ca> instead.

(Yes, we know that it is inconvenient and somewhat counter-productive to have to register. We are working on this. Apologies.)

* Erik Schnetter <eschnetter@perimeterinstitute.ca>
* Barry Wardell <barry.wardell@gmail.com>
* Scott Noble <scn@astro.rit.edu>
* Roland Haas <rhaas@caltech.edu>
* Tanja Bode <tanja.bode@physics.gatech.edu>

Detailed Release Announcement

2012-11-06T15:45:59Z

Tbode: /* Changes since last release */ -- Typo

== '''Not yet released''': Ørsted (ET_2012_11) ==

=== Changes since last release ===
* GetComponents:
** anonymous checkout is now used by default. Use --noanonymous for authenticated checkouts
** make full clone default
* simfactory
** updates of various machine configurations
** Replace large files by hard links during cleanup
** Basic configuration file for ubuntu / debian / fedora desktops.
* utils: syntax highlight for vim and emacs
* Cactus flesh:
** The allocated size of grid functions can be accessed using cctk_ash. Note however, that this can be different from cctk_lsh. The latter is that part (size) of cctk_ash that is used within a simulation, i.e. that was set as simulation size via parameters. This is necessary for vectorization where the size of arrays should be multiples of some number, but the simulation domain might not be.
** correctly detect circular schedule items
** replace CCTK_RESTRICT by restrict, which is now defined by the flesh
** Change per thorn -DTHORN_IS_xxx to a per thorn -I bindings/include/xxx
** Correct error in determining dependencies
** have -reconfig target execute -cleandeps after reconfiguration
** add parameters to reverse un-enforced Cactus schedule ordering
** Move MPI support from flesh to a thorn
** Support various new Darwin minor versions
** increase default value of RELTOL to 1e-12
** Enforce that arrangement names are legal C identifiers
** Update Fortran API for CCTK_LOOP macros
** Add autoconf check whether C99 is supported (now required)
** New option -P (--exit-after-param-check) to exit after param check
** allow ${parfile} in parameter files to allow ${parfile}/subdir
* Carpet
** Now lives in git again
** A parameter <tt>CarpetLib::interpolate_from_buffer_zones</tt> was introduced which, in order to get the correct behaviour (not to use the buffer zones for interpolations), should be set to "<tt>no</tt>". However, since this changes the way things had been done in the past and this change isn't well tested yet, the default is still "<tt>yes</tt>" (as like before the parameter was introduced). The default will very likely be changed for the next Einstein Toolkit release, after more testing.
** Added "balanced" domain decomposition
** Update setting CPU affinity
** change defaults of periodic_[xyz] to "yes" to match PUGH
** CarpetIOHDF5: add option checkpoint_every_divisor
** CarpetIOHDF5: teach the checkpointer to write index files
** CarpetIOHDF5: add support for index files to file reader
** LoopControl: Change printstats default to "no"
** CarpetInterp: New ENO2 interpolator.
** Support more than one hierarchy of timers
* EinsteinExact: New arrangement, to eventually replace the Exact thorn. The thorns in this arrangement are generated by Kranc
* McLachlan
** Correct some errors in CCZ4, in particular the GammaShift parameter
** Change the default value of apply_dissipation to "never".
* ExternalLibraries: MPI is now treated like any other library on which flesh and thorns may depend, such as e.g. the GSL. It is thus configured via thorn <tt>ExternalLibraries/MPI</tt>, and not via the flesh any more. In particular, the option "<tt>MPI = ...</tt>" does not work any more and must not be used; instead, use e.g. "<tt>MPI_DIR = <path></tt>" to point to an existing installation. You may also say "<tt>MPI_DIR = BUILD</tt>" to have Cactus build OpenMPI automatically, which is a convenient way of using MPI on a system where it may not be installed.
* LocalInterp: The interpolation loop uses OpenMP
* MoL: add multirate capabilities and three new multirate rk schemes
* SphericalSurface: make maxnphi and maxntheta parameters steerable
* NaNChecker: Add options to use restriction mask to ignore unused points, output more information about the failed points, use OpenMP during NaN check
* Multipole: Implement Driscoll&Healy integration
* HydroBase: schedule hydrobase_InitExcisionmask global-early loop-local
* TmunuBase: support_old_CalcTmunu_mechanism is now deprecated and is likely to be removed soon
* EOS_Omni: make more parameters steerable, add option read_table_on_single_process to have a named processor read the full table and MPI_Bcast it to the other processors
* GRHydro
** C2P: resort to bisection if Newton-Raphson fails. This is only activated if user requested this
** introduce parameters GRHydro_Y_e_min and GRHydro_Y_e_max to fix issues with EOS tables that don't extend sufficiently far
** Fixes to atmosphere mask and the way we sync
** various fixes to ePPM
** Option to use the slow sector of multirate RK methods
** fixed issues with hot EOS treatment
** Option to reconstruct W*vel instead of vel
** use an early atmosphere reset to ensure past timelevels are initialized correctly
** various MHD fixes
* Exact: openmp fixes
* GRHydro_InitData: new poloidal magnetic field routine, Added option to smooth metric inside horizon, Alfven wave test
* SummationByParts: improve OpenMP parallelization
* Null*: respect Cactus' IO::truncate parameter
* AEIThorns/Trigger now part of the Einstein Toolkit

External libraries:
* MPI: new - use this instead of the flesh mechanism (see above)
* BLAS: update to 3.4.2
* FFTW3: update to 3.3.2
* HDF5: will likely not build fortran and C++ api for next release by default (but still does now)
* LAPACK: update to 3.4.2
* LORENE: don't use OpenMP unless it's enabled within Cactus
* OpenSSL: improve search for existing library
* zlib: update to 1.2.7
* hwloc: new thorn for libhwloc

== Lovelace (ET_2012_05) ==

===Accelerator Support===

This release of the Einstein Toolkit adds support for GPUs and other accelerators. This support comprises three levels of abstraction, ranging from merely building and running both CUDA and OpenCL code, to automated code generation targetting GPUs instead of CPUs. As with any other programming paradigm (such as MPI or OpenMP), the performance benefits depend on the particular algorithms used and optimisations that are applied. In addition, the Simulation Factory greatly aids portability to a wide range of computing systems.

At the lowest level, Cactus now supports compiling, building, and running with either CUDA or OpenCL. CUDA is supported as new language in addition to C, C++, and Fortran; OpenCL is supported as an external library, and builds and executes compute kernels via run-time calls. Details are described in the user's guide (for CUDA) and in thorn <tt>ExternalLibraries/OpenCL</tt> (for OpenCL).

Many accelerator platforms today separate between host memory and device memory, and require explicit copy or map operations to transfer data. An intermediate level of abstraction aids transferring grid variables between host and device, using schedule declarations to keep track of which data are needed where, and minimising expensive data transfers. For OpenCL, there is a compact API to build and execute compute kernels at run time. Details are described in thorns <tt>CactusUtils/Accelerator</tt> and <tt>CactusUtils/OpenCLRunTime</tt> (with example parameter file).

Finally, the code generation system [http://kranccode.org/ Kranc] has been extended to be able to produce either C++ or OpenCL code, based on the infrastructure described above. This allows writing GPU code in a very high-level manner. However, it needs to be stated that the efficiency of the generated code depends on many variables, including e.g. the finite differencing stencil radius and the number of operations in the generated compute kernels. Non-trivial kernels typically require system-dependent tuning to execute efficiently, as GPUs and other accelerators generally show a rather unforgiving performance behaviour. The thorns <tt>McLachlan/ML_WaveToy</tt> and <tt>McLachlan/ML_WaveToy_CL</tt> are examples, generated from the same Kranc script, showing the generated C++ and OpenCL code.

=== New features since last release ===

* Einstein Toolkit: All test cases pass on almost all of the tested twenty production and development machines.
* SimFactory
** Machine database and optionlists updated due to system changes on HPC resources
** Simfactory can now be used to run the testsuites on a lot of systems. ICH: this is not new
* IOUtil: checkpoint_dir is now steerable
* SphericalSurface: added functionality to name spherical surfaces
* Formaline: Support a "local repository" that collects all machine-local repositories
* TimerReport: Allow different timers on different processes
* WeylScal4: Enable use of LoopControl, and hence OpenMP
* EOS_Omni: use C interface for HDF5 to avoid needing Fortran HDF5 bindings
* GRHydro:
** use atmosphere integer mask instead of bitmask
** remove (now) unused old Tmunu interface
** Implemented enhanced PPM scheme by Colella & Sekora 2008, McCorquodale & Colella 2011. Can be actived by setting use_enhanced_ppm = yes
* External Libraries: several updates and configuration improvements
* Cactus
** implement per-variable tolerances for Cactus testsuites, for long discussion, see ET ticket #114
** Allow arithmetic expression in ParameterSet: parameter files can now contain a limited set of expressions
** Handle requirements recursively
** A lot of smaller bug fixes
* McLachlan: Implement CCZ4 formulation
* CarpetMask: Keep track of the volume that is masked out
* CarpetLib: Define MPI reduction operators for complex numbers
* CarpetIOASCII: Add new "compact" output format
* Csrpet: Support accelerator data transfer
* CarpetRegrid2: Add periodic boundary conditions
* Simfactory
** Use OpenMP by default
** Make running testsuites using simfactory possible
** Updated a lot of configurations

=== How to upgrade from ET_2011_10 (Maxwell) ===

To upgrade from the previous release, use GetComponents with the new thornlist to check out the new version. GetComponents can also be used to update
an existing checkout, but since some components might have changed location or have been removed from the toolkit you should try a new checkout whenever possible instead.

See the [http://einsteintoolkit.org/download/ Download] page on the Einstein Toolkit website for download instructions.

=== Remaining issues with this release ===

* Certain machines need to be configured specially in Simfactory because the remote directories cannot be determined automatically just from the username. See the Machine notes below.

* CarpetIOHDF5: When the new parameter CarpetIOHDF5::output_symmetry_points is set to "yes", then symmetry points are not actually output if CarpetIOHDF5::output_buffer_points has been set to "no".

* Recovering with Carpet: The maximum number of timelevels that can be recovered is Carpet::prolongation_order_time+1. This is usually the case, but it is possible to write parameter files e.g. with prolongation_order_time=1 that use 3 timelevels. This bug manifests in an assert() failure when recovering from checkpoints. The work-around is to either increase Carpet::prolongation_order_time or decrease the number of timelevels for the grid function in question accordingly.

=== Machine notes ===

==== Kraken ====

defs.local.ini needs to have sourcebasedir = $HOME configured for this machine. You need to determine $HOME by logging in to the machine.

==== LoneStar and Ranger ====

defs.local.ini needs to have sourcebasedir = $WORK and basedir = $SCRATCH/simulations configured for this machine. You need to determine $WORK and $SCRATCH by logging in to the machine.

==== Pandora ====
The LSU system pandora has at the time of writing not only severe problems of compiling Cactus (can crash the filesystem), but in part due to this also outstanding are some failing testsuite results. Please contact Peter Diener at CCT (LSU) before trying to use this machine.

== Maxwell (ET_2011_10) ==

=== New features since last release ===

* Einstein Toolkit: All test cases pass on almost all of the tested twenty production and development machines.
* Carpet
** Significant internal development
** Grid structure is handled in a more efficient manner, leading to improved parallel scalability
** Grid structure output now supports multipatch
** Improvements to OpenMP parallelism in Carpet
** Support for cell-centering
** Timers are now hierarchical - use parameter output_timer_tree_every to output the timer tree to standard output. This makes it much easier to see where the time is spent in a simulation
** A backtrace file is now written to the output directory when the simulation code crashes. Note that you probably need to add the -rdynamic option to CFLAGS and CXXFLAGS for the backtrace symbols to be interpreted correctly.
* CarpetIOHDF5: There are now parameters which select whether symmetry, boundary and buffer points are output for sliced output.
* CarpetRegrid2: Now supports "true" AMR based on a regridding criterion
* SimFactory
** Completely new rewrite, new repository.
** Machine database and optionlists updated due to system changes on HPC resources
** Can now run the Cactus test suites as part of a job in a queuing system
** TODO: List of new machines supported by SimFactory?
** Optionlists now enable instruction vectorisation by default - this affects those thorns that explicitly use this vectorisation, including McLachlan and Carpet
** Now supports parameter file scripts <name>.rpar - these should be scripts which write a parameter file to <name>.par. This is useful for performing simple calculations on parameters in python or perl
** Now uses the Intel compiler by default on Kraken and Hopper
* Cactus
** CUDA support added for GPU computing
** Parameters can now be used in STORAGE specifications in schedule.ccl files
** Multi-line parameter values can now contain comments - this makes it easier to comment out entries
** Mac OS 10.7 (Lion) is now supported
** CCTK_GFINDEX3D now checks index against array bounds when CCTK_DEBUG is defined
** Standard output of Cactus build process is now much more compact
* McLachlan
** Performance improvements
** BSSN has instruction vectorisation enabled by default for improved speed
* GRHydro
** Support for MHD was added, but is by default disabled.
* WeylScal4: OpenMP support enabled in WeylScal4
* TimerReport: "top timers" now given as min/max/mean across all processes instead of just from the root process
* ADMBase
** Variables now have flat boundary condition applied
** Default value of ADMBase::initial_shift is now zero rather than none
* TwoPunctures: Now outputs a BBH metadata file, as used by NINJA / NRAR projects
* Vectors: New thorn which supports instruction vectorization to improve performance of codes that use it
* Cauchy Characteristic Extraction and the PITT Null Code are now included.
** The Pitt code implements a robust fully nonlinear characteristic evolution scheme for the Einstein equations for asymptotically flat spacetimes.
** Included in the code is the gauge invariant calculation of the Bondi News function at future null infinity.
** Include in the code are thorns that implement Cauchy Characteristic extraction, where Cauchy evolutions (McLachlan) provide boundary data for a characteristic evolution. This allows for the unambiguous calculation of the gravitational waveform from merging BBH spacetimes.
* FFTW3 library has been added to the ET
* Kranc
** thorns can now be generated including a Jacobian transformation of all derivatives - this means they can be used with multi-patch
** improvements to instruction vectorization
** can now perform finite differences using either function calls or macros; control using VECTORISE_INLINE = yes/no in optionlist; using functions can make the code fit in the instruction cache where it didn't before, resulting in large speed increases, using macros can cause compilers to run out of memory for complicated codes
** Generated thorns now check that there are sufficient ghost and boundary points for the finite differencing stencil used
** error detection has been improved

=== How to upgrade from ET_2011_05 (Curie) ===

To upgrade from the previous release, it is necessary to download a separate copy of the new release using GetComponents and manually copy any local changes from the old version to the new version. Unfortunately, due to the significant changes to SimFactory and Carpet in this release, it is not possible to perform an automatic upgrade.

See the [http://einsteintoolkit.org/download/ Download] page on the Einstein Toolkit website for download instructions.

There is also a SimFactory Transition Guide which explains the important differences in the new version. (TODO)

=== Remaining issues with this release ===

* Certain machines need to be configured specially in Simfactory because the remote directories cannot be determined automatically just from the username. See the Machine notes below.

* CarpetIOHDF5: When the new parameter CarpetIOHDF5::output_symmetry_points is set to "yes", then symmetry points are not actually output if CarpetIOHDF5::output_buffer_points has been set to "no".

* Recovering with Carpet: The maximum number of timelevels that can be recovered is Carpet::prolongation_order_time+1. This is usually the case, but it is possible to write parameter files e.g. with prolongation_order_time=1 that use 3 timelevels. This bug manifests in an assert() failure when recovering from checkpoints. The work-around is to increase Carpet::prolongation_order_time accordingly.

* CarpetMask: CarpetMask excises the interior of the black hole from the reduction operations, thus effectively reducing the volume of the simulation domain. However, CarpetReduce is not aware of this, and thus emits the following warning when CarpetMask is used:
<pre>
WARNING level 1 in thorn CarpetReduce processor 0 host kop70.datura.admin
(line 120 of Cactus/arrangements/Carpet/CarpetReduce/src/mask_test.c):
-> Simulation domain volume and reduction weight sum differ
INFO (CarpetReduce): Simulation domain volume: 432000
INFO (CarpetReduce): Reduction weight sum: 431999.996160507
</pre>
In this case, this warning is harmless, and it can be avoided by increasing the warning level e.g. to 4 in the CCTK_VWarn call on line 120 of Cactus/arrangements/Carpet/CarpetReduce/src/mask_test.c.

=== Compatibility notes ===

* SimFactory: Completely rewritten to make it more maintainable. The user interface has changed; see the [https://docs.einsteintoolkit.org/et-docs/Pysim_Tutorial_for_New_Users Tutorial for new users]
* Carpet: Can no longer use symmetries specified using CartGrid3D::domain. Use the symmetry thorns in CactusNumerical instead.
* Cactus: Build process parameter SILENT=no has been replaced with VERBOSE=yes
* Applying boundary conditions consistently: Boundary conditions were not applied consistently, in particular after recovering. There is now a new schedule group MoL_PseudoEvolutionBoundaries. Boundary conditions (including synchronisiation, symmetry conditions etc.) for functions scheduled in MoL_PseudoEvolution need to be scheduled in MoL_PseudoEvolutionBoundaries.
* Enforcing constraints consistently: Certain constraints should be enforced only during time evolution. Since the group MoL_PostStep is scheduled at many other occasions, such constraints need to be scheduled in the new group MoL_PostStepModify instead.
* McLachlan: Use of ML_BSSN_O2, ML_BSSN_O8 and ML_BSSN_MP_O8 is now deprecated and these thorns will be removed in the next release. ML_BSSN can be used with the new fdOrder parameter (set to 2, 4, 6 or 8) to control finite differencing order. Multipatch can be enabled in ML_BSSN in the parameter file (see Kranc documentation).
* WeylScal4: Parameter fd_order = 2nd/4th is now deprecated in favour of fdOrder = 2/4/6/8. fd_order will be removed in the next release.
* LocalReduce and LocalInterp have moved from CactusBase to CactusNumerical
* Carpet: Refinement levels can now have different numbers of ghost zones. This means that cctk_nghostzones is NOT defined in global mode any more, and will contain poison.
* EOS_Omni: This is now the only supported EOS interface within the Einstein Toolkit. [http://einsteintoolkit.org/documentation/ThornGuide/ThornGuidech150.html#x168-2652000Q6 Documentation] for this interface is bundled with the EOS_Omni thorn.
* Cactus: SILENT=no is depreciated within Cactus, and is superseeded by VERBOSE=yes.

=== Machine notes ===

==== Kraken ====

defs.local.ini needs to have sourcebasedir = $HOME configured for this machine. You need to determine $HOME by logging in to the machine.

==== LoneStar and Ranger ====

defs.local.ini needs to have sourcebasedir = $WORK and basedir = $SCRATCH/simulations configured for this machine. You need to determine $WORK and $SCRATCH by logging in to the machine.

== Curie (ET_2011_05) ==

[text from release announcement]

This release comprises the following tools, arrangements, and thorns. Each
tool/arrangement/thorn may have its own licencing conditions, but all are
available as open source. Green components are new in this release.

Cactus Flesh
CactusBase Standard Cactus thorns
CactusConnect
CactusElliptic
CactusIO
CactusNumerical
CactusPUGH
CactusPUGHIO
CactusTest
CactusUtils new: NoMPI

ExternalLibraries Interfaces to external libraries, new: zlib

Carpet Adaptive mesh refinement

EinsteinAnalysis Einstein Toolkit
EinsteinBase
EinsteinEOS new: EOS_Omni, others will be removed next release
EinsteinEvolve LegoExcision will be removed next release
EinsteinInitialData
EinsteinUtils

McLachlan BSSN implementation

TAT/TATelliptic Various thorns

AEIThorns Thorns hosted at AEI new: PunctureTracker, SystemStatistics

LSUThorns Thorns hosted at LSU new: Vectors

Kranc Automated code generation

GetComponents Downloading tools and thorns new repository

SimFactory Building code and running simulations

The Simulation Factory contains ready-to-use configuration details for
more than 60 systems, including most HPC systems at DOE,
LONI, TeraGrid, and RZG.

The Einstein Toolkit thorns contain over 130 regression test cases. On a large portion of the tested machines, all of these testsuites pass, using both MPI and OpenMP.

The changes between this and the previous release include:
* A new equation of state (EOS) interface was introduced, replacing both EOS_Base and EOSG_Base. It was designed with efficiency in mind, and combines all EOSs into one single thorn. All previously supported EOSs are now provided by EOS_Omni. The other EOS thorns are still maintained, but their support will be dropped at the next Einstein Toolkit release.
* The location of the GetComponents script changed (now hosted at github).
* The MHD implementation within GRHydro saw several updates, but is still disabled by default.
* Since spacetime-excision is not actively used anymore and not supported by an evolution thorn within the ET, this will be the last time LegoExcision will be part of an Einstein Toolkit release. Please consider other options if you rely on it, or let us know so that we can reconsider this decision.
* This release still ships with the Perl-version of Simfactory, but includes updated machine configurations and some bug fixes.
* Some external libraries now check for the parallel usage of the old library interface (e.g. HDF5=yes) and abort in this case. The new way (e.g. HDF5_DIR=...) is not compatible with the old way to specify libraries. If you get errors because of this you have to remove one of the two specifications from your optionlist.

== Chandrasekhar (ET_2010_11) ==

[text from release announcement]

This release comprises the following tools, arrangements, and thorns. Each
tool/arrangement/thorn may have its own licencing conditions, but all are
available as open source. Green components are new in this release, shown in
red are components now not longer part of the Einstein Toolkit:

Cactus Flesh

CactusBase Standard Cactus thorns
CactusConnect
CactusElliptic
CactusExternal Not part of the Einstein Toolkit anymore (use ExternalLibraries/libjpeg instead of jpeg6b)
CactusIO
CactusNumerical new: InterpToArray
CactusPUGH
CactusPUGHIO
CactusTest Various Cactus testsuite thorns
CactusUtils
CactusWave Wavetoy example thorns

ExternalLibraries Interfaces to external libraries (new: OpenSSL, libjpeg, several updates in other thorns)

Carpet Adaptive mesh refinement

EinsteinAnalysis Einstein Toolkit
EinsteinBase
EinsteinEOS
EinsteinEvolve
EinsteinInitialData
EinsteinUtils

McLachlan BSSN implementation

TAT/TATelliptic Various thorns
AEIThorns/AEILocalInterp
LSUThorns/QuasiLocalMeasures
LSUThorns/SummationByParts

Kranc Automated code generation

GetComponents Downloading tools and thorns

SimFactory Building code and running simulations

All repositories participating in this release carry a branch
"ET_2010_11" marking this release. These release branches will be
updated if severe errors are found.

This release has been tested on the following systems and
architectures:

Workstations (Intel, Linux)
MacBook Pro notebook (Intel, Mac OS X)
Blue Drop, NCSA (Power 7, Linux)
Damiana, AEI (Intel Woodcrest cluster, Linux)
Kraken, NICS (Cray XT5, Linux)
Philip, LSU (Intel cluster, Linux)
Queen Bee, LONI (Intel cluster, Linux)
Ranger, TACC (AMD cluster, Linux)

The Simulation Factory contains ready-to-use configuration details for
more than 20 additional systems, including most HPC systems at DOE,
LONI, TeraGrid, and RZG.

The Einstein Toolkit thorns contain 132 regression test cases. While
all test cases pass on some systems, there are unfortunately also
some systems where certain test cases fail. We verified that this is
because of accumulation of floating-point round-off error in most
cases, and we will discuss this issue in a broader context in the near
future.

The Einstein Toolkit web site contains online documentation for its
thorns, and pointers for using it to build your own code. There is
also a tutorial that explains how to download, build, and run the code
for a simple binary black hole evolution. We invite you to join our
mailing list <users@einsteintoolkit.org>.

The changes between this and the previous release include (not complete):
* Several Libraries can now be build in parallel-make mode, increasing compilation speed on some machines a lot.
* Several Libraries now clean up intermediate files, often using considerably less disk space per configuration.
* GRHydro includes (disabled, not yet finished) support for MHD. Don't try to use it yet, and don't get confused about that code.
* Several Libraries have been updated (ExternalLibraries)
* Simfactory received several updates, and this will likely be the last release with the Perl version.
* The links in the Reference manual now work (again).
* A lot of other bugs and testsuites were corrected.

On behalf of the Einstein Toolkit Consortium: the "Chandrasekhar" Release Team

Gabrielle Allen
Eloisa Bentivegna
Tanja Bode
Peter Diener
Roland Haas
Ian Hinder
Frank Löffler
Bruno Mundim
Christian D. Ott
Erik Schnetter
Eric Seidel
Michael Thomas

November 23, 2010

== Bohr (ET_2010_06) ==

[text from release announcement]

This release comprises the following tools, arrangements, and thorns. Each
tool/arrangement/thorn may have its own licencing conditions, but all are
available as open source:

Cactus Flesh

CactusBase Standard Cactus thorns
CactusConnect
CactusElliptic
CactusExternal
CactusIO
CactusNumerical
CactusPUGH
CactusPUGHIO
CactusUtils

ExternalLibraries Interfaces to external libraries

Carpet Adaptive mesh refinement

EinsteinAnalysis Einstein Toolkit
EinsteinBase
EinsteinEOS
EinsteinEvolve
EinsteinInitialData
EinsteinUtils

McLachlan BSSN implementation

TAT/TATelliptic Various thorns
AEIThorns/AEILocalInterp
LSUThorns/QuasiLocalMeasures
LSUThorns/SummationByParts

Kranc Automated code generation

GetComponents Downloading tools and thorns

SimFactory Building code and running simulations

All repositories participating in this release carry a branch
"ET_2010_06" marking this release. These release branches will be
updated if severe errors are found.

This release has been tested on the following systems and
architectures:

Workstations (Intel, Linux)
MacBook Pro notebook (Intel, Mac OS X)
Blue Drop, NCSA (Power 7, Linux)
Damiana, AEI (AMD cluster, Linux)
Kraken, NICS (Cray XT5, Linux)
Philip, LSU (Intel cluster, Linux)
Queen Bee, LONI (Intel cluster, Linux)
Ranger, TACC (AMD cluster, Linux)

The Simulation Factory contains ready-to-use configuration details for
more than 20 additional systems, including most HPC systems at DOE,
LONI, TeraGrid, and RZG.

The Einstein Toolkit thorns contain 89 regression test cases. While
all test cases pass on important systems, there are unfortunately also
some systems where certain test cases fail. We verified that this is
because of accumulation of floating-point round-off error in most
cases, and we will discuss this issue in a broader context in the near
future.

The Einstein Toolkit web site contains online documentation for its
thorns, and pointers for using it to build your own code. There is
also a tutorial that explains how to download, build, and run the code
for a simple binary black hole evolution. We invite you to join our
mailing list <users@einsteintoolkit.org>.

On behalf of the Einstein Toolkit Consortium: the "Bohr" Release Team

Gabrielle Allen
Eloisa Bentivegna
Tanja Bode
Peter Diener
Roland Haas
Ian Hinder
Frank Loeffler
Bruno Mundim
Erik Schnetter
Eric Seidel

June 17, 2010

Detailed Release Announcement

2012-11-06T15:45:00Z

Tbode: /* Changes since last release */ -- Typo

== '''Not yet released''': Ørsted (ET_2012_11) ==

=== Changes since last release ===
* GetComponents:
** anonymous checkout is now used by default. Use --noanonymous for authenticated checkouts
** make full clone default
* simfactory
** updates of various machine configurations
** Replace large files by hard links during cleanup
** Basic configuration file for ubuntu / debian / fedora desktops.
* utils: syntax highlight for vim and emacs
* Cactus flesh:
** The allocated size of grid functions can be accessed using cctk_ash. Note however, that this can be different from cctk_lsh. The latter is that part (size) of cctk_ash that is used within a simulation, i.e. that was set as simulation size via parameters. This is necessary for vectorization where there size of arrays should be multiples of some number, but the simulation domain might not be.
** correctly detect circular schedule items
** replace CCTK_RESTRICT by restrict, which is now defined by the flesh
** Change per thorn -DTHORN_IS_xxx to a per thorn -I bindings/include/xxx
** Correct error in determining dependencies
** have -reconfig target execute -cleandeps after reconfiguration
** add parameters to reverse un-enforced Cactus schedule ordering
** Move MPI support from flesh to a thorn
** Support various new Darwin minor versions
** increase default value of RELTOL to 1e-12
** Enforce that arrangement names are legal C identifiers
** Update Fortran API for CCTK_LOOP macros
** Add autoconf check whether C99 is supported (now required)
** New option -P (--exit-after-param-check) to exit after param check
** allow ${parfile} in parameter files to allow ${parfile}/subdir
* Carpet
** Now lives in git again
** A parameter <tt>CarpetLib::interpolate_from_buffer_zones</tt> was introduced which, in order to get the correct behaviour (not to use the buffer zones for interpolations), should be set to "<tt>no</tt>". However, since this changes the way things had been done in the past and this change isn't well tested yet, the default is still "<tt>yes</tt>" (as like before the parameter was introduced). The default will very likely be changed for the next Einstein Toolkit release, after more testing.
** Added "balanced" domain decomposition
** Update setting CPU affinity
** change defaults of periodic_[xyz] to "yes" to match PUGH
** CarpetIOHDF5: add option checkpoint_every_divisor
** CarpetIOHDF5: teach the checkpointer to write index files
** CarpetIOHDF5: add support for index files to file reader
** LoopControl: Change printstats default to "no"
** CarpetInterp: New ENO2 interpolator.
** Support more than one hierarchy of timers
* EinsteinExact: New arrangement, to eventually replace the Exact thorn. The thorns in this arrangement are generated by Kranc
* McLachlan
** Correct some errors in CCZ4, in particular the GammaShift parameter
** Change the default value of apply_dissipation to "never".
* ExternalLibraries: MPI is now treated like any other library on which flesh and thorns may depend, such as e.g. the GSL. It is thus configured via thorn <tt>ExternalLibraries/MPI</tt>, and not via the flesh any more. In particular, the option "<tt>MPI = ...</tt>" does not work any more and must not be used; instead, use e.g. "<tt>MPI_DIR = <path></tt>" to point to an existing installation. You may also say "<tt>MPI_DIR = BUILD</tt>" to have Cactus build OpenMPI automatically, which is a convenient way of using MPI on a system where it may not be installed.
* LocalInterp: The interpolation loop uses OpenMP
* MoL: add multirate capabilities and three new multirate rk schemes
* SphericalSurface: make maxnphi and maxntheta parameters steerable
* NaNChecker: Add options to use restriction mask to ignore unused points, output more information about the failed points, use OpenMP during NaN check
* Multipole: Implement Driscoll&Healy integration
* HydroBase: schedule hydrobase_InitExcisionmask global-early loop-local
* TmunuBase: support_old_CalcTmunu_mechanism is now deprecated and is likely to be removed soon
* EOS_Omni: make more parameters steerable, add option read_table_on_single_process to have a named processor read the full table and MPI_Bcast it to the other processors
* GRHydro
** C2P: resort to bisection if Newton-Raphson fails. This is only activated if user requested this
** introduce parameters GRHydro_Y_e_min and GRHydro_Y_e_max to fix issues with EOS tables that don't extend sufficiently far
** Fixes to atmosphere mask and the way we sync
** various fixes to ePPM
** Option to use the slow sector of multirate RK methods
** fixed issues with hot EOS treatment
** Option to reconstruct W*vel instead of vel
** use an early atmosphere reset to ensure past timelevels are initialized correctly
** various MHD fixes
* Exact: openmp fixes
* GRHydro_InitData: new poloidal magnetic field routine, Added option to smooth metric inside horizon, Alfven wave test
* SummationByParts: improve OpenMP parallelization
* Null*: respect Cactus' IO::truncate parameter
* AEIThorns/Trigger now part of the Einstein Toolkit

External libraries:
* MPI: new - use this instead of the flesh mechanism (see above)
* BLAS: update to 3.4.2
* FFTW3: update to 3.3.2
* HDF5: will likely not build fortran and C++ api for next release by default (but still does now)
* LAPACK: update to 3.4.2
* LORENE: don't use OpenMP unless it's enabled within Cactus
* OpenSSL: improve search for existing library
* zlib: update to 1.2.7
* hwloc: new thorn for libhwloc

== Lovelace (ET_2012_05) ==

===Accelerator Support===

This release of the Einstein Toolkit adds support for GPUs and other accelerators. This support comprises three levels of abstraction, ranging from merely building and running both CUDA and OpenCL code, to automated code generation targetting GPUs instead of CPUs. As with any other programming paradigm (such as MPI or OpenMP), the performance benefits depend on the particular algorithms used and optimisations that are applied. In addition, the Simulation Factory greatly aids portability to a wide range of computing systems.

At the lowest level, Cactus now supports compiling, building, and running with either CUDA or OpenCL. CUDA is supported as new language in addition to C, C++, and Fortran; OpenCL is supported as an external library, and builds and executes compute kernels via run-time calls. Details are described in the user's guide (for CUDA) and in thorn <tt>ExternalLibraries/OpenCL</tt> (for OpenCL).

Many accelerator platforms today separate between host memory and device memory, and require explicit copy or map operations to transfer data. An intermediate level of abstraction aids transferring grid variables between host and device, using schedule declarations to keep track of which data are needed where, and minimising expensive data transfers. For OpenCL, there is a compact API to build and execute compute kernels at run time. Details are described in thorns <tt>CactusUtils/Accelerator</tt> and <tt>CactusUtils/OpenCLRunTime</tt> (with example parameter file).

Finally, the code generation system [http://kranccode.org/ Kranc] has been extended to be able to produce either C++ or OpenCL code, based on the infrastructure described above. This allows writing GPU code in a very high-level manner. However, it needs to be stated that the efficiency of the generated code depends on many variables, including e.g. the finite differencing stencil radius and the number of operations in the generated compute kernels. Non-trivial kernels typically require system-dependent tuning to execute efficiently, as GPUs and other accelerators generally show a rather unforgiving performance behaviour. The thorns <tt>McLachlan/ML_WaveToy</tt> and <tt>McLachlan/ML_WaveToy_CL</tt> are examples, generated from the same Kranc script, showing the generated C++ and OpenCL code.

=== New features since last release ===

* Einstein Toolkit: All test cases pass on almost all of the tested twenty production and development machines.
* SimFactory
** Machine database and optionlists updated due to system changes on HPC resources
** Simfactory can now be used to run the testsuites on a lot of systems. ICH: this is not new
* IOUtil: checkpoint_dir is now steerable
* SphericalSurface: added functionality to name spherical surfaces
* Formaline: Support a "local repository" that collects all machine-local repositories
* TimerReport: Allow different timers on different processes
* WeylScal4: Enable use of LoopControl, and hence OpenMP
* EOS_Omni: use C interface for HDF5 to avoid needing Fortran HDF5 bindings
* GRHydro:
** use atmosphere integer mask instead of bitmask
** remove (now) unused old Tmunu interface
** Implemented enhanced PPM scheme by Colella & Sekora 2008, McCorquodale & Colella 2011. Can be actived by setting use_enhanced_ppm = yes
* External Libraries: several updates and configuration improvements
* Cactus
** implement per-variable tolerances for Cactus testsuites, for long discussion, see ET ticket #114
** Allow arithmetic expression in ParameterSet: parameter files can now contain a limited set of expressions
** Handle requirements recursively
** A lot of smaller bug fixes
* McLachlan: Implement CCZ4 formulation
* CarpetMask: Keep track of the volume that is masked out
* CarpetLib: Define MPI reduction operators for complex numbers
* CarpetIOASCII: Add new "compact" output format
* Csrpet: Support accelerator data transfer
* CarpetRegrid2: Add periodic boundary conditions
* Simfactory
** Use OpenMP by default
** Make running testsuites using simfactory possible
** Updated a lot of configurations

=== How to upgrade from ET_2011_10 (Maxwell) ===

To upgrade from the previous release, use GetComponents with the new thornlist to check out the new version. GetComponents can also be used to update
an existing checkout, but since some components might have changed location or have been removed from the toolkit you should try a new checkout whenever possible instead.

See the [http://einsteintoolkit.org/download/ Download] page on the Einstein Toolkit website for download instructions.

=== Remaining issues with this release ===

* Certain machines need to be configured specially in Simfactory because the remote directories cannot be determined automatically just from the username. See the Machine notes below.

* CarpetIOHDF5: When the new parameter CarpetIOHDF5::output_symmetry_points is set to "yes", then symmetry points are not actually output if CarpetIOHDF5::output_buffer_points has been set to "no".

* Recovering with Carpet: The maximum number of timelevels that can be recovered is Carpet::prolongation_order_time+1. This is usually the case, but it is possible to write parameter files e.g. with prolongation_order_time=1 that use 3 timelevels. This bug manifests in an assert() failure when recovering from checkpoints. The work-around is to either increase Carpet::prolongation_order_time or decrease the number of timelevels for the grid function in question accordingly.

=== Machine notes ===

==== Kraken ====

defs.local.ini needs to have sourcebasedir = $HOME configured for this machine. You need to determine $HOME by logging in to the machine.

==== LoneStar and Ranger ====

defs.local.ini needs to have sourcebasedir = $WORK and basedir = $SCRATCH/simulations configured for this machine. You need to determine $WORK and $SCRATCH by logging in to the machine.

==== Pandora ====
The LSU system pandora has at the time of writing not only severe problems of compiling Cactus (can crash the filesystem), but in part due to this also outstanding are some failing testsuite results. Please contact Peter Diener at CCT (LSU) before trying to use this machine.

== Maxwell (ET_2011_10) ==

=== New features since last release ===

* Einstein Toolkit: All test cases pass on almost all of the tested twenty production and development machines.
* Carpet
** Significant internal development
** Grid structure is handled in a more efficient manner, leading to improved parallel scalability
** Grid structure output now supports multipatch
** Improvements to OpenMP parallelism in Carpet
** Support for cell-centering
** Timers are now hierarchical - use parameter output_timer_tree_every to output the timer tree to standard output. This makes it much easier to see where the time is spent in a simulation
** A backtrace file is now written to the output directory when the simulation code crashes. Note that you probably need to add the -rdynamic option to CFLAGS and CXXFLAGS for the backtrace symbols to be interpreted correctly.
* CarpetIOHDF5: There are now parameters which select whether symmetry, boundary and buffer points are output for sliced output.
* CarpetRegrid2: Now supports "true" AMR based on a regridding criterion
* SimFactory
** Completely new rewrite, new repository.
** Machine database and optionlists updated due to system changes on HPC resources
** Can now run the Cactus test suites as part of a job in a queuing system
** TODO: List of new machines supported by SimFactory?
** Optionlists now enable instruction vectorisation by default - this affects those thorns that explicitly use this vectorisation, including McLachlan and Carpet
** Now supports parameter file scripts <name>.rpar - these should be scripts which write a parameter file to <name>.par. This is useful for performing simple calculations on parameters in python or perl
** Now uses the Intel compiler by default on Kraken and Hopper
* Cactus
** CUDA support added for GPU computing
** Parameters can now be used in STORAGE specifications in schedule.ccl files
** Multi-line parameter values can now contain comments - this makes it easier to comment out entries
** Mac OS 10.7 (Lion) is now supported
** CCTK_GFINDEX3D now checks index against array bounds when CCTK_DEBUG is defined
** Standard output of Cactus build process is now much more compact
* McLachlan
** Performance improvements
** BSSN has instruction vectorisation enabled by default for improved speed
* GRHydro
** Support for MHD was added, but is by default disabled.
* WeylScal4: OpenMP support enabled in WeylScal4
* TimerReport: "top timers" now given as min/max/mean across all processes instead of just from the root process
* ADMBase
** Variables now have flat boundary condition applied
** Default value of ADMBase::initial_shift is now zero rather than none
* TwoPunctures: Now outputs a BBH metadata file, as used by NINJA / NRAR projects
* Vectors: New thorn which supports instruction vectorization to improve performance of codes that use it
* Cauchy Characteristic Extraction and the PITT Null Code are now included.
** The Pitt code implements a robust fully nonlinear characteristic evolution scheme for the Einstein equations for asymptotically flat spacetimes.
** Included in the code is the gauge invariant calculation of the Bondi News function at future null infinity.
** Include in the code are thorns that implement Cauchy Characteristic extraction, where Cauchy evolutions (McLachlan) provide boundary data for a characteristic evolution. This allows for the unambiguous calculation of the gravitational waveform from merging BBH spacetimes.
* FFTW3 library has been added to the ET
* Kranc
** thorns can now be generated including a Jacobian transformation of all derivatives - this means they can be used with multi-patch
** improvements to instruction vectorization
** can now perform finite differences using either function calls or macros; control using VECTORISE_INLINE = yes/no in optionlist; using functions can make the code fit in the instruction cache where it didn't before, resulting in large speed increases, using macros can cause compilers to run out of memory for complicated codes
** Generated thorns now check that there are sufficient ghost and boundary points for the finite differencing stencil used
** error detection has been improved

=== How to upgrade from ET_2011_05 (Curie) ===

To upgrade from the previous release, it is necessary to download a separate copy of the new release using GetComponents and manually copy any local changes from the old version to the new version. Unfortunately, due to the significant changes to SimFactory and Carpet in this release, it is not possible to perform an automatic upgrade.

See the [http://einsteintoolkit.org/download/ Download] page on the Einstein Toolkit website for download instructions.

There is also a SimFactory Transition Guide which explains the important differences in the new version. (TODO)

=== Remaining issues with this release ===

* Certain machines need to be configured specially in Simfactory because the remote directories cannot be determined automatically just from the username. See the Machine notes below.

* CarpetIOHDF5: When the new parameter CarpetIOHDF5::output_symmetry_points is set to "yes", then symmetry points are not actually output if CarpetIOHDF5::output_buffer_points has been set to "no".

* Recovering with Carpet: The maximum number of timelevels that can be recovered is Carpet::prolongation_order_time+1. This is usually the case, but it is possible to write parameter files e.g. with prolongation_order_time=1 that use 3 timelevels. This bug manifests in an assert() failure when recovering from checkpoints. The work-around is to increase Carpet::prolongation_order_time accordingly.

* CarpetMask: CarpetMask excises the interior of the black hole from the reduction operations, thus effectively reducing the volume of the simulation domain. However, CarpetReduce is not aware of this, and thus emits the following warning when CarpetMask is used:
<pre>
WARNING level 1 in thorn CarpetReduce processor 0 host kop70.datura.admin
(line 120 of Cactus/arrangements/Carpet/CarpetReduce/src/mask_test.c):
-> Simulation domain volume and reduction weight sum differ
INFO (CarpetReduce): Simulation domain volume: 432000
INFO (CarpetReduce): Reduction weight sum: 431999.996160507
</pre>
In this case, this warning is harmless, and it can be avoided by increasing the warning level e.g. to 4 in the CCTK_VWarn call on line 120 of Cactus/arrangements/Carpet/CarpetReduce/src/mask_test.c.

=== Compatibility notes ===

* SimFactory: Completely rewritten to make it more maintainable. The user interface has changed; see the [https://docs.einsteintoolkit.org/et-docs/Pysim_Tutorial_for_New_Users Tutorial for new users]
* Carpet: Can no longer use symmetries specified using CartGrid3D::domain. Use the symmetry thorns in CactusNumerical instead.
* Cactus: Build process parameter SILENT=no has been replaced with VERBOSE=yes
* Applying boundary conditions consistently: Boundary conditions were not applied consistently, in particular after recovering. There is now a new schedule group MoL_PseudoEvolutionBoundaries. Boundary conditions (including synchronisiation, symmetry conditions etc.) for functions scheduled in MoL_PseudoEvolution need to be scheduled in MoL_PseudoEvolutionBoundaries.
* Enforcing constraints consistently: Certain constraints should be enforced only during time evolution. Since the group MoL_PostStep is scheduled at many other occasions, such constraints need to be scheduled in the new group MoL_PostStepModify instead.
* McLachlan: Use of ML_BSSN_O2, ML_BSSN_O8 and ML_BSSN_MP_O8 is now deprecated and these thorns will be removed in the next release. ML_BSSN can be used with the new fdOrder parameter (set to 2, 4, 6 or 8) to control finite differencing order. Multipatch can be enabled in ML_BSSN in the parameter file (see Kranc documentation).
* WeylScal4: Parameter fd_order = 2nd/4th is now deprecated in favour of fdOrder = 2/4/6/8. fd_order will be removed in the next release.
* LocalReduce and LocalInterp have moved from CactusBase to CactusNumerical
* Carpet: Refinement levels can now have different numbers of ghost zones. This means that cctk_nghostzones is NOT defined in global mode any more, and will contain poison.
* EOS_Omni: This is now the only supported EOS interface within the Einstein Toolkit. [http://einsteintoolkit.org/documentation/ThornGuide/ThornGuidech150.html#x168-2652000Q6 Documentation] for this interface is bundled with the EOS_Omni thorn.
* Cactus: SILENT=no is depreciated within Cactus, and is superseeded by VERBOSE=yes.

=== Machine notes ===

==== Kraken ====

defs.local.ini needs to have sourcebasedir = $HOME configured for this machine. You need to determine $HOME by logging in to the machine.

==== LoneStar and Ranger ====

defs.local.ini needs to have sourcebasedir = $WORK and basedir = $SCRATCH/simulations configured for this machine. You need to determine $WORK and $SCRATCH by logging in to the machine.

== Curie (ET_2011_05) ==

[text from release announcement]

This release comprises the following tools, arrangements, and thorns. Each
tool/arrangement/thorn may have its own licencing conditions, but all are
available as open source. Green components are new in this release.

Cactus Flesh
CactusBase Standard Cactus thorns
CactusConnect
CactusElliptic
CactusIO
CactusNumerical
CactusPUGH
CactusPUGHIO
CactusTest
CactusUtils new: NoMPI

ExternalLibraries Interfaces to external libraries, new: zlib

Carpet Adaptive mesh refinement

EinsteinAnalysis Einstein Toolkit
EinsteinBase
EinsteinEOS new: EOS_Omni, others will be removed next release
EinsteinEvolve LegoExcision will be removed next release
EinsteinInitialData
EinsteinUtils

McLachlan BSSN implementation

TAT/TATelliptic Various thorns

AEIThorns Thorns hosted at AEI new: PunctureTracker, SystemStatistics

LSUThorns Thorns hosted at LSU new: Vectors

Kranc Automated code generation

GetComponents Downloading tools and thorns new repository

SimFactory Building code and running simulations

The Simulation Factory contains ready-to-use configuration details for
more than 60 systems, including most HPC systems at DOE,
LONI, TeraGrid, and RZG.

The Einstein Toolkit thorns contain over 130 regression test cases. On a large portion of the tested machines, all of these testsuites pass, using both MPI and OpenMP.

The changes between this and the previous release include:
* A new equation of state (EOS) interface was introduced, replacing both EOS_Base and EOSG_Base. It was designed with efficiency in mind, and combines all EOSs into one single thorn. All previously supported EOSs are now provided by EOS_Omni. The other EOS thorns are still maintained, but their support will be dropped at the next Einstein Toolkit release.
* The location of the GetComponents script changed (now hosted at github).
* The MHD implementation within GRHydro saw several updates, but is still disabled by default.
* Since spacetime-excision is not actively used anymore and not supported by an evolution thorn within the ET, this will be the last time LegoExcision will be part of an Einstein Toolkit release. Please consider other options if you rely on it, or let us know so that we can reconsider this decision.
* This release still ships with the Perl-version of Simfactory, but includes updated machine configurations and some bug fixes.
* Some external libraries now check for the parallel usage of the old library interface (e.g. HDF5=yes) and abort in this case. The new way (e.g. HDF5_DIR=...) is not compatible with the old way to specify libraries. If you get errors because of this you have to remove one of the two specifications from your optionlist.

== Chandrasekhar (ET_2010_11) ==

[text from release announcement]

This release comprises the following tools, arrangements, and thorns. Each
tool/arrangement/thorn may have its own licencing conditions, but all are
available as open source. Green components are new in this release, shown in
red are components now not longer part of the Einstein Toolkit:

Cactus Flesh

CactusBase Standard Cactus thorns
CactusConnect
CactusElliptic
CactusExternal Not part of the Einstein Toolkit anymore (use ExternalLibraries/libjpeg instead of jpeg6b)
CactusIO
CactusNumerical new: InterpToArray
CactusPUGH
CactusPUGHIO
CactusTest Various Cactus testsuite thorns
CactusUtils
CactusWave Wavetoy example thorns

ExternalLibraries Interfaces to external libraries (new: OpenSSL, libjpeg, several updates in other thorns)

Carpet Adaptive mesh refinement

EinsteinAnalysis Einstein Toolkit
EinsteinBase
EinsteinEOS
EinsteinEvolve
EinsteinInitialData
EinsteinUtils

McLachlan BSSN implementation

TAT/TATelliptic Various thorns
AEIThorns/AEILocalInterp
LSUThorns/QuasiLocalMeasures
LSUThorns/SummationByParts

Kranc Automated code generation

GetComponents Downloading tools and thorns

SimFactory Building code and running simulations

All repositories participating in this release carry a branch
"ET_2010_11" marking this release. These release branches will be
updated if severe errors are found.

This release has been tested on the following systems and
architectures:

Workstations (Intel, Linux)
MacBook Pro notebook (Intel, Mac OS X)
Blue Drop, NCSA (Power 7, Linux)
Damiana, AEI (Intel Woodcrest cluster, Linux)
Kraken, NICS (Cray XT5, Linux)
Philip, LSU (Intel cluster, Linux)
Queen Bee, LONI (Intel cluster, Linux)
Ranger, TACC (AMD cluster, Linux)

The Simulation Factory contains ready-to-use configuration details for
more than 20 additional systems, including most HPC systems at DOE,
LONI, TeraGrid, and RZG.

The Einstein Toolkit thorns contain 132 regression test cases. While
all test cases pass on some systems, there are unfortunately also
some systems where certain test cases fail. We verified that this is
because of accumulation of floating-point round-off error in most
cases, and we will discuss this issue in a broader context in the near
future.

The Einstein Toolkit web site contains online documentation for its
thorns, and pointers for using it to build your own code. There is
also a tutorial that explains how to download, build, and run the code
for a simple binary black hole evolution. We invite you to join our
mailing list <users@einsteintoolkit.org>.

The changes between this and the previous release include (not complete):
* Several Libraries can now be build in parallel-make mode, increasing compilation speed on some machines a lot.
* Several Libraries now clean up intermediate files, often using considerably less disk space per configuration.
* GRHydro includes (disabled, not yet finished) support for MHD. Don't try to use it yet, and don't get confused about that code.
* Several Libraries have been updated (ExternalLibraries)
* Simfactory received several updates, and this will likely be the last release with the Perl version.
* The links in the Reference manual now work (again).
* A lot of other bugs and testsuites were corrected.

On behalf of the Einstein Toolkit Consortium: the "Chandrasekhar" Release Team

Gabrielle Allen
Eloisa Bentivegna
Tanja Bode
Peter Diener
Roland Haas
Ian Hinder
Frank Löffler
Bruno Mundim
Christian D. Ott
Erik Schnetter
Eric Seidel
Michael Thomas

November 23, 2010

== Bohr (ET_2010_06) ==

[text from release announcement]

This release comprises the following tools, arrangements, and thorns. Each
tool/arrangement/thorn may have its own licencing conditions, but all are
available as open source:

Cactus Flesh

CactusBase Standard Cactus thorns
CactusConnect
CactusElliptic
CactusExternal
CactusIO
CactusNumerical
CactusPUGH
CactusPUGHIO
CactusUtils

ExternalLibraries Interfaces to external libraries

Carpet Adaptive mesh refinement

EinsteinAnalysis Einstein Toolkit
EinsteinBase
EinsteinEOS
EinsteinEvolve
EinsteinInitialData
EinsteinUtils

McLachlan BSSN implementation

TAT/TATelliptic Various thorns
AEIThorns/AEILocalInterp
LSUThorns/QuasiLocalMeasures
LSUThorns/SummationByParts

Kranc Automated code generation

GetComponents Downloading tools and thorns

SimFactory Building code and running simulations

All repositories participating in this release carry a branch
"ET_2010_06" marking this release. These release branches will be
updated if severe errors are found.

This release has been tested on the following systems and
architectures:

Workstations (Intel, Linux)
MacBook Pro notebook (Intel, Mac OS X)
Blue Drop, NCSA (Power 7, Linux)
Damiana, AEI (AMD cluster, Linux)
Kraken, NICS (Cray XT5, Linux)
Philip, LSU (Intel cluster, Linux)
Queen Bee, LONI (Intel cluster, Linux)
Ranger, TACC (AMD cluster, Linux)

The Simulation Factory contains ready-to-use configuration details for
more than 20 additional systems, including most HPC systems at DOE,
LONI, TeraGrid, and RZG.

The Einstein Toolkit thorns contain 89 regression test cases. While
all test cases pass on important systems, there are unfortunately also
some systems where certain test cases fail. We verified that this is
because of accumulation of floating-point round-off error in most
cases, and we will discuss this issue in a broader context in the near
future.

The Einstein Toolkit web site contains online documentation for its
thorns, and pointers for using it to build your own code. There is
also a tutorial that explains how to download, build, and run the code
for a simple binary black hole evolution. We invite you to join our
mailing list <users@einsteintoolkit.org>.

On behalf of the Einstein Toolkit Consortium: the "Bohr" Release Team

Gabrielle Allen
Eloisa Bentivegna
Tanja Bode
Peter Diener
Roland Haas
Ian Hinder
Frank Loeffler
Bruno Mundim
Erik Schnetter
Eric Seidel

June 17, 2010

MHD development

2012-10-24T21:33:59Z

Tbode:

= MHD Discussions/Agenda =

* ''Pre-Release Points: Need a publishable version of MHD used for the paper''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
** What place can we store SmoothedPuncture (Turduckening) function?
* ''Paper updates and progress''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

== Con2Prim Inverter ==

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

== Vector Potential ==

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

The basic functions, scheduling, storage, and interface are ready to be committed. The remaining work is the brunt of the bookkeeping and physics. The work to be partitioned out is detailed below.

References: [http://arxiv.org/abs/1110.4633 arXiv:1110.4633] for Lorenz gauge and [http://arxiv.org/abs/1007.2848 arXiv:1007.2848] for Algebraic gauge

Basic organizational ideas for implementation:
* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro. Currently must live in GRHydro in order to keep development separate within Zelmani pre-release.
* Allow HydroBase::initial_bvec to be "from Avec". Currently provided by GRHydro. Since it depends on where A resides on the cell, may want to keep this within GRHydro.

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Source terms for A -- Use B^i from appropriate locations for A_i to be located as expected
* Conversion from (Aphi,A_i) -> Bvec
* Riemannsolver -- Support for A^mu (Lorenz gauge) or verified no-flux for algebraic gauge
* New prolongation operator for A_i

MHD development

2012-10-24T21:19:08Z

Tbode:

= MHD Discussions/Agenda =

* ''Pre-Release Points: Need a publishable version of MHD used for the paper''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
** What place can we store SmoothedPuncture (Turduckening) function?
* ''Paper updates and progress''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

== Con2Prim Inverter ==

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

== Vector Potential ==

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

The basic functions, scheduling, storage, and interface are ready to be committed. The remaining work is the brunt of the bookkeeping and physics. The work to be partitioned out is detailed below.

References: [http://arxiv.org/abs/1110.4633 arXiv:1110.4633] for Lorenz gauge and [http://arxiv.org/abs/1007.2848 arXiv:1007.2848] for Algebraic gauge

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Source terms for A -- Use B^i from appropriate locations for A_i to be located as expected
* Conversion from (Aphi,A_i) -> Bvec
* Riemannsolver -- Support for A^mu (Lorenz gauge) or verified no-flux for algebraic gauge
* New prolongation operator for A_i

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro. Currently must live in GRHydro in order to keep development separate within Zelmani pre-release.
* Allow HydroBase::initial_bvec to be "from Avec". Generation of A from B is difficult
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators
* Start with this at heart once release version of GRMHD ready

MHD development

2012-10-24T16:23:59Z

Tbode:

= MHD Discussions/Agenda =

* ''Pre-Release Points: Need a publishable version of MHD used for the paper''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
** What place can we store SmoothedPuncture (Turduckening) function?
* ''Paper updates and progress''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

== Con2Prim Inverter ==

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

== Vector Potential ==

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Source terms for A (done)
* Convert (Aphi,A_i) -> Bvec, called with (or by) Con2Prim
* Riemannsolver support for A^mu (Lorenz gauge)
* Prim2Con handles uses B (from A)
* New prolongation operator for A_i

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro. Currently must live in GRHydro in order to keep development separate within Zelmani pre-release.
* Allow HydroBase::initial_bvec to be "from Avec". Generation of A from B is difficult
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators
* Start with this at heart once release version of GRMHD ready

MHD development

2012-10-24T16:06:31Z

Tbode:

= MHD Discussions/Agenda =

* ''Pre-Release Points: Need a publishable version of MHD used for the paper''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
** What place can we store SmoothedPuncture (Turduckening) function?
* ''Paper updates and progress''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

== Con2Prim Inverter ==

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

== Vector Potential ==

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Source terms for A (just need to add source terms for A_i, Aphi)
* Convert (Aphi,A_i) -> Bvec, called with (or by) Con2Prim
* Riemannsolver support for A^mu (Lorenz gauge)
* Prim2Con handles uses B (from A)
* New prolongation operator for A_i

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro. Currently must live in GRHydro in order to keep development separate within Zelmani pre-release.
* Allow HydroBase::initial_bvec to be "from Avec". Generation of A from B is difficult
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators
* Start with this at heart once release version of GRMHD ready

MHD development

2012-10-23T21:21:02Z

Tbode:

= MHD Discussions/Agenda =

* ''Pre-Release Points: Need a publishable version of MHD used for the paper''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
** What place can we store SmoothedPuncture (Turduckening) function?
* ''Paper updates and progress''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

== Con2Prim Inverter ==

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

== Vector Potential ==

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro. Currently must live in GRHydro in order to keep development separate within Zelmani pre-release.
* Allow HydroBase::initial_bvec to be "from Avec". Generation of A from B is difficult
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators
* Start with this at heart once release version of GRMHD ready

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Source terms for A
* Riemannsolver support for A^mu (Lorenz gauge)
* Evolution equations for Avec,Aphi
* Bvec construction from A^mu (into HydroBase in the end, scheduled more often by GRHydro when Avec evolved)
* Handle A -> Bvec before/in Prim2Con
* VecPot version of Con2Prim avoid Avec itself
* Reconstruct A^mu

MHD development

2012-10-23T20:11:35Z

Tbode:

= MHD Discussions/Agenda =

* ''Pre-Release Points: Need a publishable version of MHD used for the paper''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
** What place can we store SmoothedPuncture (Turduckening) function?
* ''Paper updates and progress''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

== Con2Prim Inverter ==

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

== Vector Potential ==

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro. Currently must live in GRHydro in order to keep development separate within Zelmani pre-release.
* Allow HydroBase::initial_bvec to be "from Avec". Generation of A from B is difficult
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators
* Start with this at heart once release version of GRMHD ready

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Evolution equations for Avec,Aphi
* Bvec construction from A^mu (into HydroBase in the end, scheduled more often by GRHydro when Avec evolved)
* Handle A -> Bvec before/in Prim2Con
* VecPot version of Con2Prim avoid Avec itself
* Reconstruct A^mu
* Riemannsolver support for A^mu

MHD development

2012-10-23T19:51:45Z

Tbode:

= MHD Discussions/Agenda =

* ''Pre-Release Points: Need a publishable version of MHD used for the paper''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
** What place can we store SmoothedPuncture (Turduckening) function?
* ''Paper updates and progress''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

== Con2Prim Inverter ==

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

== Vector Potential ==

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators
* Start with this at heart once release version of GRMHD ready

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Evolution equations
* Bvec construction from A^mu
* Prim2Con/Con2Prim support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

MHD development

2012-10-23T19:39:08Z

Tbode:

= MHD Development Agenda =

Discussions
* ''Pre-Release Points: Need a publishable version of MHD''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
* '''Paper updates and progress'''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
*** Hacks: if failures within horizon, just use initial prims and run prim2con
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

= Con2Prim Inverter =

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

= Vector Potential =

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Evolution equations
* Bvec construction from A^mu
* Prim2Con/Con2Prim support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

MHD development

2012-10-23T19:30:52Z

Tbode:

= MHD Development Agenda =

Discussions
* ''Pre-Release Points: Need a publishable version of MHD''
** Need some addressing of Con2Prim for GRMHD pushed
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
* '''Paper updates and progress'''
* Issues with current MHD methods
** Con2Prim failures (GRHydro/GRMHD)
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

= Con2Prim Inverter =

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

= Vector Potential =

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Evolution equations
* Bvec construction from A^mu
* Prim2Con/Con2Prim support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

MHD development

2012-10-23T19:23:33Z

Tbode:

= MHD Development Agenda =

List of Potential Topics
* ''Pre-Release Points: Need a publishable version of MHD''
** Con2Prim failures
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
** Test cases from MHD paper examples (~0.5-1.5 minutes tops)
* Paper updates and progress
* Issues with current MHD methods
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

= Con2Prim Inverter =

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

= Vector Potential =

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Discussion ===

* A^\mu should live in HydroBase so initial data doesn't have to depend on GRHydro
* Want to apply proper staggered A^i so need to extend appropriate prolongation operators

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and interface (done)
* Evolution equations
* Bvec construction from A^mu
* Prim2Con/Con2Prim support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

MHD development

2012-10-23T18:50:41Z

Tbode:

= MHD Development Agenda =

List of Potential Topics
* ''Pre-Release Points: Need a publishable version of MHD''
** Con2Prim failures
*** Save initial state in all Con2Prim routines, check results before overwriting
*** Pass ideal & acceptable tolerances, have end C2P tolerance GF
* Paper updates and progress
* Issues with current MHD methods
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

= Con2Prim Inverter =

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

= Vector Potential =

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Matters to Discuss ===

* Staggered vs unstaggered A^i
* Prolongation operators given the location on the cell ( for staggered A only )
* Scheduling for reconstructing B from the vector potential

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and evolution (simpler now that E^i has been implemented and tested for the constraint transport)
* B-field construction from A^mu
* Initial Prim2Con support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

MHD development

2012-10-23T16:34:00Z

Tbode:

= MHD Development Agenda =

List of Potential Topics
* Paper updates and progress
* Issues with current MHD methods
** Divergence cleaning and mesh refinement
** Combining constraint transport and divergence cleaning
* New methods
** Con2Prim Inversion -- Force-free
** Vector Potential implementation

= Con2Prim Inverter =

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

= Vector Potential =

Evolving the vector potential allows for better control of the B-field divergence and better behavior around a puncture. Evolving the vector potential is also better behaved surrounding puncture BHs.

=== Current State ===

This was partially implemented in the last development workshop, but removed again within the last year. We had agreed to implement the algebraic gauge first with a view towards the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Matters to Discuss ===

* Staggered vs unstaggered A^i
* Prolongation operators given the location on the cell ( for staggered A only )
* Scheduling for reconstructing B from the vector potential

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and evolution (simpler now that E^i has been implemented and tested for the constraint transport)
* B-field construction from A^mu
* Initial Prim2Con support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

MHD development

2012-10-23T15:10:47Z

Tbode: Add/reshuffle topics

= MHD Development Agenda =

List of Potential Topics
* Paper updates and progress
* Divergence cleaning and mesh refinement
* Combining constraint transport and divergence cleaning
* Vector Potential implementation

= Vector Potential =

Evolving the vector potential allows for better conservation across refinement level boundaries and better control of the B-field divergence. Evolving the vector potential is also better behaved surrounding puncture BHs. As this feature changes one of the base evolved variables with a non-local connection to the variables currently used in pointwise MHD routines, though, an efficient toggle system to switch evolution schemes could use further discussion.

=== Current State ===

This was partially implemented in the last development workshop, though this has been removed again from the development version. We had agreed to implement the algebraic gauge first, but ultimately need the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Matters to Discuss ===

* Staggered vs unstaggered A^i
* Prolongation operators given the location on the cell ( for staggered A only )
* Scheduling for reconstructing B from the vector potential

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and evolution (simpler now that E^i has been implemented and tested for the constraint transport)
* B-field construction from A^mu
* Initial Prim2Con support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

= Con2Prim Inverter =

* add code to transition into force-free inversion (no force free evolution) if magnetic pressure starts to dominate gas pressure (done in SpEC, seems robust)

MHD development

2012-10-08T22:15:34Z

Tbode: Initial page with basic vector potential outline

= MHD Development Agenda =

List of Potential Topics
* Vector Potential implementation

= Vector Potential =

Evolving the vector potential allows for better conservation across refinement level boundaries and better control of the B-field divergence. Evolving the vector potential is also better behaved surrounding puncture BHs. As this feature changes one of the base evolved variables with a non-local connection to the variables currently used in pointwise MHD routines, though, an efficient toggle system to switch evolution schemes could use further discussion.

=== Current State ===

This was partially implemented in the last development workshop, though this has been removed again from the development version. We had agreed to implement the algebraic gauge first, but ultimately need the Lorenz gauge. Initial implementation had been of cell-centered vector potential, though we should now be able to support staggered grid vector potential.

=== Matters to Discuss ===

* Staggered vs unstaggered A^i
* Prolongation operators given the location on the cell ( for staggered A only )
* Scheduling for reconstructing B from the vector potential

=== Coding Tasks ===

As this workshop will take place during the pre-release phase, this development should take place in Zelmani.

* Storage and evolution (simpler now that E^i has been implemented and tested for the constraint transport)
* B-field construction from A^mu
* Initial Prim2Con support for A^mu
* Reconstruction support for A^mu
* Riemannsolver support for A^mu
* Recovery point-wise support for A^mu

Phone Call Minutes

2012-09-14T14:54:51Z

Tbode: Add meeting minute links, mid-July to 10. Sept

====Sept 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-September/002513.html 2012-09-10]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-September/002505.html 2012-09-03]
====August 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-August/002483.html 2012-08-27]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-August/002471.html 2012-08-20]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-August/002456.html 2012-08-13]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-August/002446.html 2012-08-06]
====July 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-August/002429.html 2012-07-30]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-July/002365.html 2012-07-23]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-July/002345.html 2012-07-15]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-July/002343.html 2012-07-09]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-July/002327.html 2012-07-02]
====June 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-June/002322.html 2012-06-25]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-June/002305.html 2012-06-18]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-June/002280.html 2012-06-11]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-June/002270.html 2012-06-04]
====May 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-May/002236.html 2012-05-28]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-May/002186.html 2012-05-21]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-May/002137.html 2012-05-14]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-May/002114.html 2012-05-07]
====April 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-April/002104.html 2011-04-30]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-April/002092.html 2011-04-23]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-April/002079.html 2011-04-16]
* No meeting on April 9th (just after ETK workshop)
* No meeting on April 2nd (APS meeting)
====March 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-March/001990.html 2012-03-26]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-March/001968.html 2012-03-19]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-March/001920.html 2012-03-12]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-March/001883.html 2012-03-05]
====February 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-February/001856.html 2012-02-27]
* no meeting on 2012-02-20
* [http://lists.einsteintoolkit.org/pipermail/users/2012-February/001808.html 2012-02-13]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-February/001785.html 2012-02-06]
====January 2012====
* [http://lists.einsteintoolkit.org/pipermail/users/2012-January/001777.html 2012-01-30]
* no meeting on 2012-01-23
* presentation [http://einsteintoolkit.org/seminars/2012_01_16/ A conservation law formulation of nonlinear elasticity in general relativity]
* [http://lists.einsteintoolkit.org/pipermail/users/2012-January/001708.html 2012-11-09]
* no meeting on 2012-01-02
* no minutes for 2011-12-19, rumour has it MPI implementations were discussed
====December 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-December/001633.html 2011-12-12]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-December/001623.html 2011-12-05]
====November 2011====
* presentation: [http://einsteintoolkit.org/seminars/2011_11_28/ Improved EM Gauge Condition for GRMHD Simulations with AMR]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-November/001584.html 2011-11-21]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-November/001569.html 2011-11-14]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-November/001538.html 2011-11-07]
====October 2011====
* no meeting on 2011-10-31 [[ET_Workshop_Fall_2011|Fall 2011 ET workshop]] at LSU:
* [http://lists.einsteintoolkit.org/pipermail/users/2011-October/001512.html 2011-10-24]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-October/001500.html 2011-10-17]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-October/001494.html 2011-10-10]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-October/001485.html 2011-10-03]
====September 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-September/001447.html 2011-09-26]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-September/001439.html 2011-09-19]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-September/001407.html 2011-09-12]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-September/001407.html 2011-09-05]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-September/001396.html 2011-08-29]
====August 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-August/001345.html 2011-08-22]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-August/001323.html 2011-08-15]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-August/001299.html 2011-08-08]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-August/001275.html 2011-08-01]
====July 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-July/001254.html 2011-07-25]
* no meeting on 2011-07-18 (Teragrid conference)
* [http://lists.einsteintoolkit.org/pipermail/users/2011-July/001212.html 2011-07-11]
* no meeting worth mentioning on 2011-07-04
====June 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-June/001183.html 2011-06-20]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-June/001143.html 2011-06-13]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-June/001129.html 2011-06-06]
====May 2011====
* no meeting on 2011-05-30 (US memorial day)
* [http://lists.einsteintoolkit.org/pipermail/users/2011-May/001086.html 2011-05-23]
* no meeting on 2011-05-16 (GCGM6)
* [http://lists.einsteintoolkit.org/pipermail/users/2011-May/001024.html 2011-05-09]
* no meeting on 2011-05-02 (APS meeting)
====April 2011====
* no meeting on 2011-04-25 ([[ET_Workshop_Spring_2011|CIGR workshop]])
* [http://lists.einsteintoolkit.org/pipermail/users/2011-April/000996.html 2011-04-18]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-April/000975.html 2011-04-11]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-April/000968.html 2011-04-04]
====March 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-March/000952.html 2011-03-28]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-March/000944.html 2011-03-21]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-March/000924.html 2011-03-14]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-March/000915.html 2011-03-07]
====February 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-February/000896.html 2011-02-28]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-February/000884.html 2011-02-21]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-February/000862.html 2011-02-14]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-February/000844.html 2011-02-07]
====January 2011====
* [http://lists.einsteintoolkit.org/pipermail/users/2011-January/000817.html 2011-01-31]
* [http://lists.einsteintoolkit.org/pipermail/users/2011-January/000805.html 2011-01-24]
* no minutes for 2011-01-17
* [http://lists.einsteintoolkit.org/pipermail/users/2011-January/000794.html 2011-01-10]
====December 2010====
* [http://lists.einsteintoolkit.org/pipermail/users/2010-December/000754.html 2010-12-13]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-December/000723.html 2010-12-06]
====November 2010====
* [http://lists.einsteintoolkit.org/pipermail/users/2010-November/000690.html 2010-11-29]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-November/000671.html 2010-11-22]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-November/000657.html 2010-11-15]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-November/000650.html 2010-11-08]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-November/000607.html 2010-11-01]
====October 2010====
* [http://lists.einsteintoolkit.org/pipermail/users/2010-October/000579.html 2010-10-25]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-October/000565.html 2010-10-18]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-October/000535.html 2010-10-11]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-October/000519.html 2010-10-04]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-October/000516.html 2010-09-27]
====September 2010====
* [http://lists.einsteintoolkit.org/pipermail/users/2010-September/000481.html 2010-09-20]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-September/000479.html 2010-09-13]
====August 2010====
* [http://lists.einsteintoolkit.org/pipermail/users/2010-August/000447.html 2010-08-30]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-August/000435.html 2010-08-16]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-August/000424.html 2010-08-09]
* [http://lists.einsteintoolkit.org/pipermail/users/2010-August/000409.html 2010-08-02]
====July 2010====
* [http://lists.einsteintoolkit.org/pipermail/users/2010-July/000401.html 2010-07-26]

ET Workshop Spring 2012

2012-04-10T05:51:40Z

Tbode: Fix et_tour slides link

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] ([https://docs.einsteintoolkit.org/et-docs/images/e/eb/Numerical_relativity.pdf slides])
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, [https://docs.einsteintoolkit.org/et-docs/images/6/69/Onepuncture.par single BH], and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/scientific_viz/scientific_viz.pdf slides])
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/Matt_Duez_InterpretingDataPresentationSlides.pdf The Challenge of interpreting data in numerical relativity]
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions ) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz/handson_sviz.pdf slides])
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/handson_viz.pdf slides], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/rho.final.session TOV session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/rho.rl4.h5.xz TOV data file], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/psi4.volume.session Psi4 session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/psir.h5.xz Psi4 data file])
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/handson_analysis.pdf slides]), more information at end of wiki
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/John_Wise_EnzoAlgorithmsMod.pdf Basic Enzo Algorithms ]
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU ([[Media:Einstein_Toolkit_2012.pdf|slides]])
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/et-tour/et_tour.pdf slides])
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/supercomputing/supercomputing.pdf slides])
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation etc.) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/future/future.pdf slides])
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

===Visualization, Hands-on I===

Download the slides and some extra sample data via
cd $HOME
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz .
Make sure you have 3d data! If not, add these lines to your tov parameter file and rerun for a bit:
CarpetIOHDF5::out3d_every = 1
CarpetIOHDF5::out3d_vars = " HydroBase::rho "
These give data under the file name ''rho.xyz.h5''. Alternatively, add the following parameters
CarpetIOHDF5::out_every = 1
CarpetIOHDF5::out_vars = "HydroBase::rho"
which give data under the file ''rho.h5''. Either way works fine. We will assume the latter for the moment.

Follow the directions on the first slides to create a plot of how the evolving TOV differs from its initial state.

Other suggestions for visualization tasks are contained in the slides.

===Analysis: Thorn Writing===

Roland's partial and full thorn solutions are available via
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/Cactus/misc/CoreTracker.th

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

ET Workshop Spring 2012

2012-04-09T15:00:12Z

Tbode: Add link to John Wise's slides

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] ([https://docs.einsteintoolkit.org/et-docs/images/e/eb/Numerical_relativity.pdf slides])
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, [https://docs.einsteintoolkit.org/et-docs/images/6/69/Onepuncture.par single BH], and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/scientific_viz/scientific_viz.pdf slides])
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/Matt_Duez_InterpretingDataPresentationSlides.pdf The Challenge of interpreting data in numerical relativity]
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions ) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz/handson_sviz.pdf slides])
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/handson_viz.pdf slides], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/rho.final.session TOV session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/rho.rl4.h5.xz TOV data file], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/psi4.volume.session Psi4 session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/psir.h5.xz Psi4 data file])
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/handson_analysis.pdf slides]), more information at end of wiki
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/John_Wise_EnzoAlgorithmsMod.pdf Basic Enzo Algorithms ]
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU ([[Media:Einstein_Toolkit_2012.pdf|slides]])
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/et-tour/et-tour.pdf slides])
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/supercomputing/supercomputing.pdf slides])
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation etc.) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/future/future.pdf slides])
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

===Visualization, Hands-on I===

Download the slides and some extra sample data via
cd $HOME
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz .
Make sure you have 3d data! If not, add these lines to your tov parameter file and rerun for a bit:
CarpetIOHDF5::out3d_every = 1
CarpetIOHDF5::out3d_vars = " HydroBase::rho "
These give data under the file name ''rho.xyz.h5''. Alternatively, add the following parameters
CarpetIOHDF5::out_every = 1
CarpetIOHDF5::out_vars = "HydroBase::rho"
which give data under the file ''rho.h5''. Either way works fine. We will assume the latter for the moment.

Follow the directions on the first slides to create a plot of how the evolving TOV differs from its initial state.

Other suggestions for visualization tasks are contained in the slides.

===Analysis: Thorn Writing===

Roland's partial and full thorn solutions are available via
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/Cactus/misc/CoreTracker.th

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

ET Workshop Spring 2012

2012-04-09T09:00:10Z

Tbode: Add slides links for last three talks.

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] ([https://docs.einsteintoolkit.org/et-docs/images/e/eb/Numerical_relativity.pdf slides])
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, [https://docs.einsteintoolkit.org/et-docs/images/6/69/Onepuncture.par single BH], and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/scientific_viz/scientific_viz.pdf slides])
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/Matt_Duez_InterpretingDataPresentationSlides.pdf The Challenge of interpreting data in numerical relativity]
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions ) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz/handson_sviz.pdf slides])
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/handson_viz.pdf slides], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/rho.final.session TOV session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/rho.rl4.h5.xz TOV data file], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/psi4.volume.session Psi4 session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/psir.h5.xz Psi4 data file])
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/handson_analysis.pdf slides]), more information at end of wiki
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU ([[Media:Einstein_Toolkit_2012.pdf|slides]])
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/et-tour/et-tour.pdf slides])
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/supercomputing/supercomputing.pdf slides])
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation etc.) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/future/future.pdf slides])
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

===Visualization, Hands-on I===

Download the slides and some extra sample data via
cd $HOME
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz .
Make sure you have 3d data! If not, add these lines to your tov parameter file and rerun for a bit:
CarpetIOHDF5::out3d_every = 1
CarpetIOHDF5::out3d_vars = " HydroBase::rho "
These give data under the file name ''rho.xyz.h5''. Alternatively, add the following parameters
CarpetIOHDF5::out_every = 1
CarpetIOHDF5::out_vars = "HydroBase::rho"
which give data under the file ''rho.h5''. Either way works fine. We will assume the latter for the moment.

Follow the directions on the first slides to create a plot of how the evolving TOV differs from its initial state.

Other suggestions for visualization tasks are contained in the slides.

===Analysis: Thorn Writing===

Roland's partial and full thorn solutions are available via
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/Cactus/misc/CoreTracker.th

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

ET Workshop Spring 2012

2012-04-05T14:07:05Z

Tbode: Rearrange sections.

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] ([https://docs.einsteintoolkit.org/et-docs/images/e/eb/Numerical_relativity.pdf slides])
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, [https://docs.einsteintoolkit.org/et-docs/images/6/69/Onepuncture.par single BH], and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/scientific_viz/scientific_viz.pdf slides])
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/Matt_Duez_InterpretingDataPresentationSlides.pdf The Challenge of interpreting data in numerical relativity]
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions ) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz/handson_sviz.pdf slides])
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/handson_viz.pdf slides], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/rho.final.session TOV session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/rho.rl4.h5.xz TOV data file], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/psi4.volume.session Psi4 session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/psir.h5.xz Psi4 data file])
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/handson_analysis.pdf slides]), more information at end of wiki
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

===Visualization, Hands-on I===

Download the slides and some extra sample data via
cd $HOME
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz .
Make sure you have 3d data! If not, add these lines to your tov parameter file and rerun for a bit:
CarpetIOHDF5::out3d_every = 1
CarpetIOHDF5::out3d_vars = " HydroBase::rho "
These give data under the file name ''rho.xyz.h5''. Alternatively, add the following parameters
CarpetIOHDF5::out_every = 1
CarpetIOHDF5::out_vars = "HydroBase::rho"
which give data under the file ''rho.h5''. Either way works fine. We will assume the latter for the moment.

Follow the directions on the first slides to create a plot of how the evolving TOV differs from its initial state.

Other suggestions for visualization tasks are contained in the slides.

===Analysis: Thorn Writing===

Roland's partial and full thorn solutions are available via
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/Cactus/misc/CoreTracker.th

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

ET Workshop Spring 2012

2012-04-05T11:19:05Z

Tbode: /* Hands on material */

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] ([https://docs.einsteintoolkit.org/et-docs/images/e/eb/Numerical_relativity.pdf slides])
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, [https://docs.einsteintoolkit.org/et-docs/images/6/69/Onepuncture.par single BH], and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/scientific_viz/scientific_viz.pdf slides])
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/Matt_Duez_InterpretingDataPresentationSlides.pdf The Challenge of interpreting data in numerical relativity]
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions ) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz/handson_sviz.pdf slides])
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/handson_viz.pdf slides], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/rho.final.session TOV session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/rho.rl4.h5.xz TOV data file], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/psi4.volume.session Psi4 session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/psir.h5.xz Psi4 data file])
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/handson_analysis.pdf slides]), more information at end of wiki
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

===Visualization, Hands-on I===

Download the slides and some extra sample data via
cd $HOME
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz .
Make sure you have 3d data! If not, add these lines to your tov parameter file and rerun for a bit:
CarpetIOHDF5::out3d_every = 1
CarpetIOHDF5::out3d_vars = " HydroBase::rho "
These give data under the file name ''rho.xyz.h5''. Alternatively, add the following parameters
CarpetIOHDF5::out_every = 1
CarpetIOHDF5::out_vars = "HydroBase::rho"
which give data under the file ''rho.h5''. Either way works fine. We will assume the latter for the moment.

Follow the directions on the first slides to create a plot of how the evolving TOV differs from its initial state.

Other suggestions for visualization tasks are contained in the slides.

===Analysis: Thorn Writing===

Roland's partial and full thorn solutions are available via
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/Cactus/misc/CoreTracker.th

ET Workshop Spring 2012

2012-04-05T09:39:13Z

Tbode: /* Visualization, Hands-on I */

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] 
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single [https://docs.einsteintoolkit.org/et-docs/images/6/69/Onepuncture.par BH], and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/scientific_viz/scientific_viz.pdf slides])
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/Matt_Duez_InterpretingDataPresentationSlides.pdf The Challenge of interpreting data in numerical relativity]
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions ) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz/handson_sviz.pdf slides])
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/handson_viz.pdf slides], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/rho.final.session TOV session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/rho.rl4.h5.xz TOV data file], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/psi4.volume.session Psi4 session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/psir.h5.xz Psi4 data file])
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_analysis/handson_analysis.pdf slides]), more information at end of wiki
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

===Visualization, Hands-on I===

Download the slides and some extra sample data via
cd $HOME
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz .
Make sure you have 3d data! If not, add these lines to your tov parameter file and rerun for a bit:
CarpetIOHDF5::out3d_every = 1
CarpetIOHDF5::out3d_vars = " HydroBase::rho "
These give data under the file name ''rho.xyz.h5''. Alternatively, add the following parameters
CarpetIOHDF5::out_every = 1
CarpetIOHDF5::out_vars = "HydroBase::rho"
which give data under the file ''rho.h5''. Either way works fine. We will assume the latter for the moment.

Follow the directions on the first slides to create a plot of how the evolving TOV differs from its initial state.

Other suggestions for visualization tasks are contained in the slides.

ET Workshop Spring 2012

2012-04-05T08:12:45Z

Tbode: /* Hands on material */

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] 
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/scientific_viz/scientific_viz.pdf slides])
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: The Challenge of interpreting data in numerical relativity 
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions ) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz/handson_sviz.pdf slides])
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/handson_viz.pdf slides], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/rho.final.session TOV session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/rho.rl4.h5.xz TOV data file], [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_viz/psi4.volume.session Psi4 session file], [http://www.physics.gatech.edu/~rhaas3/Workshop_Spring_2012/psir.h5.xz Psi4 data file])
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

===Visualization, Hands-on I===
Download the slides and some extra sample data via
cd $HOME
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/handson_sviz .
Make sure you have 3d data! If not, add these lines to your tov parameter file and rerun for a bit:
CarpetIOHDF5::out3d_every = 1
CarpetIOHDF5::out3d_vars = " HydroBase::rho "

ET Workshop Spring 2012

2012-04-05T05:55:38Z

Tbode: /* Schedule */

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Aranha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/introduction/introduction.pdf slides])
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/hpc_intro/hpc_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level) ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactus_intro/cactus_intro.pdf slides])
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/genrel/genrel.pdf slides])
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]] ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/cactuswriting/cactuswriting.pdf slides])
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus ([https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/example_wavetoy.pdf slides])
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]] 
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star 
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University: The Challenge of interpreting data in numerical relativity
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to look at meaningful quantities ( TOV profile evolutions )
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
via
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par
===Static TOV===
Edit par/static_tov.par as Frank indicated and save as $HOME/Cactus/fast_tov.par

To run enter:
cd $HOME/Cactus
exe/cactus_sim fast_tov.par

ET Workshop Spring 2012

2012-04-04T12:16:03Z

Tbode: /* WaveToy */

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Arañha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]]
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
[https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/]
via
mkdir Handson && cd Handson
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/
The slides are accessible [[Media:WaveToySlides.pdf|here]].
A thorn list to download the WaveToy thorn is available and can be used
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
simfactory/bin/sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par

ET Workshop Spring 2012

2012-04-04T12:12:24Z

Tbode: /* WaveToy */

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Arañha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]]
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE
* TheTenth Thai
: 132 10th Street Northeast (Thai)

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
[https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/]
via
mkdir Handson && cd Handson
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/
The slides are accessible [[Media:WaveToySlides.pdf|here]].
A thorn list to download the WaveToy thorn is available and can be used
cd $HOME
./GetComponents -a https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/Cactus/misc/WaveToy.th
cd Cactus
echo 'Introduction/WaveToy' >>configs/sim/ThornList
simfactory/bin/sim build
Once built, you can run this in one line via simfactory
sim create-run wavetoy --parfile wavetoy-misc/WaveToy.par

ET Workshop Spring 2012

2012-04-04T07:08:29Z

Tbode: Organize local info

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Arañha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]]
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Setup ===
* Wireless access is through the GTVisitor network. '''One''' account per person, please. It will work on multiple devices simultaneously.
* The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

== Area Details ==

* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
[https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/]
via
mkdir Handson && cd Handson
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/

ET Workshop Spring 2012

2012-04-04T07:01:50Z

Tbode: Volunteers before Attendees

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Arañha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

== In-Workshop Details ==

The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]]
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Internet Access ===
* Wireless access information will come via a guest account with the login information given out at arrival. If there are any questions or concerns please go see '''Tanja Bode''' upon arrival.

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE
Rita G.

== Area Details ==
* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
[https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/]
via
mkdir Handson && cd Handson
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/

ET Workshop Spring 2012

2012-04-04T07:00:03Z

Tbode: Remove Lodgings

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

The current participant list as of 4. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University
|-
| Rafael Arañha || Georgia Tech
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University
|-
| Roseanne Cheng || UNC-Chapel Hill
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech
|-
| Brett Deaton || Washington University
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University
|-
| Gary Forrester || University of Massachusetts at Dartmouth
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma
|-
| Rita Garrido || Georgia Tech
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University
|-
| Scott Hawley || Belmont University
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech
|-
| Jussara Marandola Kofuji || Georgia Tech
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen
|-
| Hari Krishnan || Louisiana State University
|- style="background:lightgrey;"
| Sean McWilliams || Princeton
|-
| Philipp Moesta || Caltech
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech
|-
| Prabath Peiris || Rochester Institute of Technology
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech
|-
| Prayash Sharma Pyakurel || Truman State University
|- style="background:lightgrey;"
| Christian Reisswig || Caltech
|-
| Ian Ruchlin || Rochester Institute of Technology
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University
|-
| Chao Shi || Georgia Tech
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University
|-
| Magda Slawinska || Georgia Tech
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University
|-
| Alex Vañô Viñuales || University of the Balearic Islands
|- style="background:lightgrey;"
| Andrew Vu || Emory University
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL
|}

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech
|-
| Dennis Castleberry || Louisiana State University
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University
|-
| Josh Faber || Rochester Institute of Technology
|- style="background:lightgrey;"
| Roland Haas || Caltech
|-
| Frank Löffler || Louisiana State University
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology
|}

== In-Workshop Details ==

The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]]
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Internet Access ===
* Wireless access information will come via a guest account with the login information given out at arrival. If there are any questions or concerns please go see '''Tanja Bode''' upon arrival.

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE
Rita G.

== Area Details ==
* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE

==Hands on material==
===WaveToy===
The source code for the example thorn and the slides is available at
[https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/]
via
mkdir Handson && cd Handson
svn co https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/example_wavetoy/

ET Workshop Spring 2012

2012-04-04T06:56:56Z

Tbode: Add Rita

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

The current participant list as of 2. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings Arranged
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University ||
|-
| Rafael Arañha || Georgia Tech || N/A
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University ||
|-
| Roseanne Cheng || UNC-Chapel Hill ||
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech || N/A
|-
| Brett Deaton || Washington University || X
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University ||
|-
| Gary Forrester || University of Massachusetts at Dartmouth || X
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma || X
|-
| Rita Garrido || Georgia Tech ||
|- style="background:lightgrey;"
| Joshua Harris || Louisiana State University ||
|-
| Scott Hawley || Belmont University ||
|- style="background:lightgrey;"
| Matt Kinsey || Georgia Tech || N/A
|-
| Jussara Marandola Kofuji || Georgia Tech || N/A
|- style="background:lightgrey;"
| Kostas Kokkotas || Universität Tübingen ||
|-
| Hari Krishnan || Louisiana State University || X
|- style="background:lightgrey;"
| Sean McWilliams || Princeton ||
|-
| Philipp Moesta || Caltech ||
|- style="background:lightgrey;"
| Tuan Anh Nguyen || Georgia Tech || N/A
|-
| Prabath Peiris || Rochester Institute of Technology ||
|- style="background:lightgrey;"
| Larne Pekowsky || Georgia Tech || N/A
|-
| Prayash Sharma Pyakurel || Truman State University || N/A
|- style="background:lightgrey;"
| Christian Reisswig || Caltech ||
|-
| Ian Ruchlin || Rochester Institute of Technology ||
|- style="background:lightgrey;"
| Carl Rodriguez || Northwestern University ||
|-
| Chao Shi || Georgia Tech ||
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University ||
|-
| Magda Slawinska || Georgia Tech || N/A
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University ||
|-
| Alex Vañô Viñuales || University of the Balearic Islands || X
|- style="background:lightgrey;"
| Andrew Vu || Emory University || N/A
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL ||
|}

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech || X
|-
| Dennis Castleberry || Louisiana State University || X
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University || X
|-
| Josh Faber || Rochester Institute of Technology ||
|- style="background:lightgrey;"
| Roland Haas || Caltech || X
|-
| Frank Löffler || Louisiana State University || X
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology ||
|}

== In-Workshop Details ==

The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| [[Introduction on Cactus Thorn-Writing (lower level)]]
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Internet Access ===
* Wireless access information will come via a guest account with the login information given out at arrival. If there are any questions or concerns please go see '''Tanja Bode''' upon arrival.

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE
Rita G.

== Area Details ==
* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE

ET Workshop Spring 2012

2012-04-03T14:47:29Z

Tbode:

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

The current participant list as of 2. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings Arranged
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University ||
|-
| Rafael Arañha || Georgia Tech || N/A
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University ||
|-
| Roseanne Cheng || UNC-Chapel Hill ||
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech || N/A
|-
| Brett Deaton || Washington University || X
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University ||
|-
| Gary Forrester || University of Massachusetts at Dartmouth || X
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma || X
|-
| Joshua Harris || Louisiana State University ||
|- style="background:lightgrey;"
| Scott Hawley || Belmont University ||
|-
| Matt Kinsey || Georgia Tech || N/A
|- style="background:lightgrey;"
| Jussara Marandola Kofuji || Georgia Tech || N/A
|-
| Kostas Kokkotas || Universität Tübingen ||
|- style="background:lightgrey;"
| Hari Krishnan || Louisiana State University || X
|-
| Sean McWilliams || Princeton ||
|- style="background:lightgrey;"
| Philipp Moesta || Caltech ||
|-
| Tuan Anh Nguyen || Georgia Tech || N/A
|- style="background:lightgrey;"
| Prabath Peiris || Rochester Institute of Technology ||
|-
| Larne Pekowsky || Georgia Tech || N/A
|- style="background:lightgrey;"
| Prayash Sharma Pyakurel || Truman State University || N/A
|-
| Christian Reisswig || Caltech ||
|- style="background:lightgrey;"
| Ian Ruchlin || Rochester Institute of Technology ||
|-
| Carl Rodriguez || Northwestern University ||
|- style="background:lightgrey;"
| Chao Shi || Georgia Tech ||
|-
| Cody Simmons || North Carolina State University ||
|- style="background:lightgrey;"
| Magda Slawinska || Georgia Tech || N/A
|-
| Petr Tsatsin || Florida Atlantic University ||
|- style="background:lightgrey;"
| Alex Vañô Viñuales || University of the Balearic Islands || X
|-
| Andrew Vu || Emory University || N/A
|- style="background:lightgrey;"
| Konstantin Yakunin || Florida Atlantic University / ORNL ||
|}

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech || X
|-
| Dennis Castleberry || Louisiana State University || X
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University || X
|-
| Josh Faber || Rochester Institute of Technology ||
|- style="background:lightgrey;"
| Roland Haas || Caltech || X
|-
| Frank Löffler || Louisiana State University || X
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology ||
|}

== In-Workshop Details ==

The virtual machine for the workshop is [http://cct.lsu.edu/~dcastl2/] and will run in [http://virtualbox.org virtualbox]

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| Introduction on Cactus Thorn-Writing (lower level)
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Internet Access ===
* Wireless access information will come via a guest account with the login information given out at arrival. If there are any questions or concerns please go see '''Tanja Bode''' upon arrival.

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE
Rita G.

== Area Details ==
* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE

ET Workshop Spring 2012

2012-04-02T16:49:38Z

Tbode: Add participant Shi

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

The current participant list as of 2. April 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings Arranged
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University ||
|-
| Rafael Arañha || Georgia Tech || N/A
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University ||
|-
| Roseanne Cheng || UNC-Chapel Hill ||
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech || N/A
|-
| Brett Deaton || Washington University || X
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University ||
|-
| Gary Forrester || University of Massachusetts at Dartmouth || X
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma || X
|-
| Joshua Harris || Louisiana State University ||
|- style="background:lightgrey;"
| Scott Hawley || Belmont University ||
|-
| Matt Kinsey || Georgia Tech || N/A
|- style="background:lightgrey;"
| Jussara Marandola Kofuji || Georgia Tech || N/A
|-
| Kostas Kokkotas || Universität Tübingen ||
|- style="background:lightgrey;"
| Hari Krishnan || Louisiana State University || X
|-
| Sean McWilliams || Princeton ||
|- style="background:lightgrey;"
| Philipp Moesta || Caltech ||
|-
| Tuan Anh Nguyen || Georgia Tech || N/A
|- style="background:lightgrey;"
| Prabath Peiris || Rochester Institute of Technology ||
|-
| Larne Pekowsky || Georgia Tech || N/A
|- style="background:lightgrey;"
| Prayash Sharma Pyakurel || Truman State University || N/A
|-
| Christian Reisswig || Caltech ||
|- style="background:lightgrey;"
| Ian Ruchlin || Rochester Institute of Technology ||
|-
| Carl Rodriguez || Northwestern University ||
|- style="background:lightgrey;"
| Chao Shi || Georgia Tech ||
|-
| Cody Simmons || North Carolina State University ||
|- style="background:lightgrey;"
| Magda Slawinska || Georgia Tech || N/A
|-
| Petr Tsatsin || Florida Atlantic University ||
|- style="background:lightgrey;"
| Alex Vañô Viñuales || University of the Balearic Islands || X
|-
| Andrew Vu || Emory University || N/A
|- style="background:lightgrey;"
| Konstantin Yakunin || Florida Atlantic University / ORNL ||
|}

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech || X
|-
| Dennis Castleberry || Louisiana State University || X
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University || X
|-
| Josh Faber || Rochester Institute of Technology ||
|- style="background:lightgrey;"
| Roland Haas || Caltech || X
|-
| Frank Löffler || Louisiana State University || X
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology ||
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-09:30
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 09:30-10:00
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| Introduction on Cactus Thorn-Writing (lower level)
| Joshua Faber
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk I -- Matt Duez, Washington University
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-14:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 14:15-15:15
| Invited Talk II -- John Wise, Georgia Tech
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-17:30
| Hands-on: continuation
| Roland Haas
|-
| Fri
| 08:00-09:00
| Presentation of visualization of result of previous session, 6 teams: 8 min each
| Frank Löffler
|-
| Fri
| 09:00-10:00
| Invited talk III -- Gabrielle Allen, LSU
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 11:00-11:30
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:30-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Internet Access ===
* Wireless access information will come via a guest account with the login information given out at arrival. If there are any questions or concerns please go see '''Tanja Bode''' upon arrival.

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE
Rita G.

== Area Details ==
* For on-campus directions please consult the link of a detailed '''map of the Georgia Tech Campus''': [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels
* Ferst Place (Located on the 3rd floor)
* Ferst Food Court (Located on the 2nd floor)

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE

ET Workshop Spring 2012

2012-03-30T12:56:22Z

Tbode: Add room number. There will be signs to help.

== Spring Einstein Toolkit Workshop 2012 ==

We prepared a [https://svn.einsteintoolkit.org/documents/Workshop_Spring_2012/flyer/etk2.pdf flyer], which can be printed or otherwise
distributed.

=== Announcement ===
The Einstein Toolkit (http://einsteintoolkit.org) will host its spring workshop 2012 following the April APS meeting in Atlanta, GA,
from Tuesday, April 3rd 4pm to Friday April 6th noon.

This workshop is targeted at new and potential new users of the relativity infrastructure. It will provide a general introductions
into numerical relativity (although some previous knowledge would be beneficial) and in code development within large collaborations.
Hands-on sessions will help to familiarize attendees with the Einstein Toolkit. Participants are asked to bring their own laptops.
We would like to invite especially students from physics and computer science to participate.

The number of attendees is limited, and while registration is free, it is required. We anticipate to be able to support a small
number of participants financially, by covering parts/all of their travel, hotel and meal cost. Preference will be given to students.

In order to register, write an email to workshop@einsteintoolkit.org, specify:
* your name, affiliation and title
* your estimated arrival and departure time/date
* whether you apply for support (and if so, state if you are undergraduate / graduate student / postdoc)
* your special needs

Detailed workshop information can be found at https://docs.einsteintoolkit.org/et-docs/ET_Workshop_Spring_2012.

The Einstein Toolkit Consortium.

=== Spacetime Coordinates and Contact Information ===

{| class="wikitable" border="1"
|-
! Dates
| '''Tues, 3. April @ 4pm -- Fri, 6. April @ noon'''
|-
! Location
| Room 319, Georgia Tech Student Center, Georgia Tech, Atlanta
|-
! Contacts
| Workshop email list: '''workshop@einsteintoolkit.org''', emergencies: Frank Löffler (knarf@cct.lsu.edu, +1-225-202-1752) or Tanja Bode (tanja.bode@physics.gatech.edu, +1-814-360-2715)
|-
! Hotel
| A small block of rooms was reserved at the [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG Hampton Inn Atlanta - Georgia Tech], 244 North Ave NW (404-881-0881). The group rate was '''$117 per night plus tax (appr. 16%, resulting in a ~$136 rate)''' and included a hot breakfast and high speed wireless access. A [http://hamptoninn.hilton.com/en/hp/groups/personalized/A/ATLGTHX-ETW-20120403/index.jhtml?WT.mc_id=POG group web page] was available to book online, or you could reserve by phone at 404-881-0881 and ask for the '''"Einstein Toolkit Workshop" rate'''. Attendees had until '''20. March''' to reserve.

In addition, a small block of rooms were reserved at the [http://www.hotelmidtownatlanta.com Hotel Midtown Atlanta]. The group rate was '''$89 per night''' for single occupancy, including breakfast and high-speed internet. For an additional person, add $10 (to cover breakfast costs). Though less convenient to either the APS meeting or this workshop, both can be conveniently reached by transit from the Midtown MARTA station a block away. Reservations at this rate could be done by phone only at 404-873-4800. The block of rooms was released on '''26. March'''.
|-
! Transportation - Hotel
| The best way to get to the hotels from the airport (or elsewhere) is by taking [http://itsmarta.com MARTA]'s red or gold rail line, which costs $2.50 one-way. The Hotel Midtown Atlanta is a block away from Midtown station. For the Hampton Inn, get off at the North Avenue station. It should take approximately 20 minutes to either station. From North Ave station, walk west for ~0.5 miles or transfer to MARTA bus route 26 to the stop immediately in front of the Hampton Inn.
|-
! Transportation - Workshop
| The student center is a 5-minute (~1/3 mile) walk [http://g.co/maps/hdjbt] from Hampton Inn. From the Hotel Midtown Atlanta, Georgia Tech campus (specifically the student center) can be easily reached by taking the [http://pts.gatech.edu/ride/routes_schedules/Pages/TechTrolley.aspx Georgia Tech Trolley] (free) from the Midtown MARTA station to its end station.
|-
! Transportation - From the APS (Hyatt)
| The Workshop is a 1.5 mile walk from the Hyatt where the APS is taking place. The most convenient way to reach the Workshop location on Tuesday is to take [http://itsmarta.com/1-w.aspx MARTA Bus Route 1] from Spring St [http://g.co/maps/jpf3h] (a block away from the Hyatt) directly to the workshop hotel.
|}

== Participant List ==

The current participant list as of 28. March 2012 follows, in alphabetical order.
Please indicate whether you have already arranged for lodgings so that others looking for hotel roommates
may most easily find them. This page is editable in general (though IPs are logged), so please manage your own
lodging status.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings Arranged
|- style="background:lightgrey;"
| Majd Abdelqader || Queens University ||
|-
| Rafael Arañha || Georgia Tech || N/A
|- style="background:lightgrey;"
| Grayson Carroll || Belmont University ||
|-
| Roseanne Cheng || UNC-Chapel Hill ||
|- style="background:lightgrey;"
| Michael Clark || Georgia Tech || N/A
|-
| Brett Deaton || Washington University || X
|- style="background:lightgrey;"
| Tehani K. Finch || Howard University ||
|-
| Gary Forrester || University of Massachusetts at Dartmouth || X
|- style="background:lightgrey;"
| Brian Friesen || University of Oklahoma || X
|-
| Joshua Harris || Louisiana State University ||
|- style="background:lightgrey;"
| Scott Hawley || Belmont University ||
|-
| Matt Kinsey || Georgia Tech || N/A
|- style="background:lightgrey;"
| Jussara Marandola Kofuji || Georgia Tech || N/A
|-
| Kostas Kokkotas || Universität Tübingen ||
|- style="background:lightgrey;"
| Hari Krishnan || Louisiana State University || X
|-
| Sean McWilliams || Princeton ||
|- style="background:lightgrey;"
| Philipp Moesta || Caltech ||
|-
| Tuan Anh Nguyen || Georgia Tech || N/A
|- style="background:lightgrey;"
| Prabath Peiris || Rochester Institute of Technology ||
|-
| Larne Pekowsky || Georgia Tech || N/A
|- style="background:lightgrey;"
| Prayash Sharma Pyakurel || Truman State University || N/A
|-
| Christian Reisswig || Caltech ||
|- style="background:lightgrey;"
| Ian Ruchlin || Rochester Institute of Technology ||
|-
| Carl Rodriguez || Northwestern University ||
|- style="background:lightgrey;"
| Cody Simmons || North Carolina State University ||
|-
| Magda Slawinska || Georgia Tech || N/A
|- style="background:lightgrey;"
| Petr Tsatsin || Florida Atlantic University ||
|-
| Alex Vañô Viñuales || University of the Balearic Islands || X
|- style="background:lightgrey;"
| Andrew Vu || Emory University || N/A
|-
| Konstantin Yakunin || Florida Atlantic University / ORNL ||
|}

Below are the ET volunteers who will be presenting or heading parts of the sessions.

{|class="wikitable" border="2" cellpadding="2"
|-
! Name
! Affiliation
! Lodgings
|- style="background:lightgrey;"
| Tanja Bode || Georgia Tech || X
|-
| Dennis Castleberry || Louisiana State University || X
|- style="background:lightgrey;"
| Peter Diener || Louisiana State University || X
|-
| Josh Faber || Rochester Institute of Technology ||
|- style="background:lightgrey;"
| Roland Haas || Caltech || X
|-
| Frank Löffler || Louisiana State University || X
|- style="background:lightgrey;"
| Bruno Mundim || Rochester Institute of Technology ||
|}

== In-Workshop Details ==

=== Schedule ===

{| class="wikitable" border="1"
|-
| Day
| Time
| Activity
| Presenter / Responsible
|-
| Tue
| 16:00-17:30
| Setup for early birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:00-08:30
| Setup for late birds
| Tanja Bode, Roland Haas, Frank Löffler
|-
| Wed
| 08:30-09:00
| Opening, Introduction
| Frank Löffler
|-
| Wed
| 09:00-10:00
| Invited Talk I
|-
| Wed
| 10:00-10:30
| Discussion and break
|-
| Wed
| 10:30-11:15
| [[Introduction to General Relativity]]
| Joshua Faber
|-
| Wed
| 11:15-12:00
| Introduction to Scientific Software & HPC
| Frank Löffler
|-
| Wed
| 12:00-13:00
| Lunch break
|-
| Wed
| 13:00-13:30
| Introduction to Workshop development environment
| Dennis Castleberry
|-
| Wed
| 13:30-14:15
| Hands-on, provided Wave-Equation example within Cactus
| Roland Haas
|-
| Wed
| 14:15-15:15
| [[Introduction numerical methods & numerical Relativity]]
| Bruno Mundim, Peter Diener
|-
| Wed
| 15:15-15:45
| Discussion and break
|-
| Wed
| 15:45-17:30
| Running and extending (par-file) of two provided examples: perturbed, single BH, and perturbed, single TOV star
| Frank Löffler, Bruno Mundim
|-
| Thu
| 08:00-09:00
| Introduction in Scientific visualization - a bit of theory and a lot of practice
| Tanja Bode
|-
| Thu
| 09:00-10:00
| Invited Talk II
|-
| Thu
| 10:00-10:30
| Discussion and break
|-
| Thu
| 10:30-11:15
| Hands-on: Using visualization tools to analyze simulations of previous evening session (BH mass and area, GWs, conserved TOV mass, TOV density profiles, advanced: convergence factor)
| Tanja Bode
|-
| Thu
| 11:15-12:00
| Create movie of either BH+GW or TOV oscillations using VisIt
| Roland Haas
|-
| Thu
| 12:00-13:00
| Lunch
|-
| Thu
| 13:00-13:30
| Introduction to Cactus (high-level)
| Frank Löffler
|-
| Thu
| 13:30-14:15
| Introduction on Cactus Thorn-Writing (lower level)
| Joshua Faber
|-
| Thu
| 14:15-15:15
| Hands-on: Implement your own thorn (neutron star tracking), and visualize it, in teams of about 5 people
| Roland Haas
|-
| Thu
| 15:15-15:45
| Discussion and break
|
|-
| Thu
| 15:45-16:30
| Hands-on: continuation
|
|-
| Thu
| 16:30-17:30
| Presentation of visualization of result of previous session, 3-5 min per team.
| Frank Löffler
|-
| Fri
| 08:00-09:00
| Tour through available ET components
| Peter Diener
|-
| Fri
| 09:00-10:00
| Invited talk III
|
|-
| Fri
| 10:00-10:30
| Discussion and break
|
|-
| Fri
| 10:30-11:15
| Overview over supercomputing resources, introduction on how to get accounts / allocations, trends in HPC, reminder how to get ET help in the future
| Joshua Faber, Peter Diener
|-
| Fri
| 11:15-12:00
| The future of the ET: everything we didn't talk about (EOSs, refluxing, multiblock, MHD, radiation ect.)
| Frank Löffler
|}

=== Internet Access ===
* Wireless access information will come via a guest account with the login information given out at arrival. If there are any questions or concerns please go see '''Tanja Bode''' upon arrival.

=== Restaurants ===
'''Places to Eat On-Campus:'''
'''Technology Square''', located on 5th Street and Spring Street, has a variety of good and cheap restaurants including:
* Tin Drum Asia Cafe
* Ray's New York Pizza
* Chuck's Famous
* Barrelhouse
* 5th Street Ribs n' Blues
* Umma's House Restaurant and Cafe
* Waffle House
* Moe's Southwest Grill
* St. Charles Deli
The '''Student Center''' [http://www.studentcenter.gatech.edu] has:
* Chick-fil-a
* Taco Bell
* Subway
* A pub style at Jackets
* Einstein's Bagels

'''Places to Eat Off-campus :'''
* Varsity (American)
: 61 North Ave. NW
* Goodfellas (American)
: 615 Spring Street
* The Real Chow Baby (American Stir Fry)
: 1016 Howell Mill Road
* Zen on Ten Asian Bistro (Sushi)
:1000 Northside Dr. NW
* Spoon (Thai)
: 768 Marietta Street
* The Vortex (American)
: 878 Peachtree Street NE
* Taco Mac (American)
: 933 Peachtree St NE
* La Fonda Latina (Mexican)
: 1025 Howell Mill Road
* Prickly Pear (Mexican)
: 950 West Peachtree St NE

=== Entertainment ===
* Manuel's Tavern [http://www.manuelstavern.com/] (also the site of Astrophysics unplugged)
* Blind Willie's [http://www.blindwilliesblues.com/]

=== Miscellaneous ===
* Publix at The Plaza Midtown (Supermarket)
: 950 W Peachtree St NW
* Midtown Market (Sundries)
: 225 10th St NE
* Walmart Supercenter (Supermarket)
: 1801 Howell Mill Rd Nw
* Walgreens (Pharmacy)
: 595 Piedmont Ave., Ste. 100
* CVS (Pharmacy)
: 842 Peachtree Street NE
Rita G.

== Area Details ==
* For on-campus directions please consult the link of a detailed map of the Georgia Tech Campus: [http://map.gtalumni.org/]
* For directions of Midtown and Downtown Atlanta follow the link [http://www.atlantadowntown.com/guide]

ET Workshop Spring 2012

2012-03-28T13:51:27Z

Tbode: Add Michael Clark

ET Workshop Spring 2012

2012-03-27T12:59:47Z

Tbode: Add participant Moesta

ET Workshop Spring 2012

2012-03-26T11:09:40Z

Tbode:

ET Workshop Spring 2012

2012-03-26T09:08:20Z

Tbode:

ET Workshop Spring 2012

2012-03-24T15:58:27Z

Tbode: Add participant Nguyen

ET Workshop Spring 2012

2012-03-24T11:20:22Z

Tbode: Add participant Slawinska

ET Workshop Spring 2012

2012-03-23T14:42:06Z

Tbode:

ET Workshop Spring 2012

2012-03-23T10:23:31Z

Tbode: Add participant Simmons

ET Workshop Spring 2012

2012-03-23T08:30:06Z

Tbode:

ET Workshop Spring 2012

2012-03-22T09:00:44Z

Tbode:

ET Workshop Spring 2012

2012-03-21T12:12:11Z

Tbode:

ET Workshop Spring 2012

2012-03-21T12:08:53Z

Tbode: Add participant Pyakurel

ET Workshop Spring 2012

2012-03-21T08:56:23Z

Tbode:

ET Workshop Spring 2012

2012-03-20T13:40:05Z

Tbode: Add participant Harris

ET Workshop Spring 2012

2012-03-19T12:59:27Z

Tbode: Add deadline for Midtown Atlanta hotel.