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| − | == Maxwell (ET_2011_10) == | + | == Unnamed (ET_2016_11) == |
| | | | |
| − | === New features since last release ===
| + | '''NOTE: This release text is work in progress, meant for an upcoming release of the Einstein Toolkit, ''not'' of an already released version.''' |
| | | | |
| − | * Einstein Toolkit: All test cases pass on almost all of the tested twenty production and development machines.
| + | We are pleased to announce the fourteenth release (code name "Unnamed") of the Einstein Toolkit, an open, community developed software infrastructure for relativistic astrophysics. This release includes, among other things, TODO. In addition, bug fixes accumulated since the previous release in May 2016 have been included. |
| − | * 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
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| − | * Kranc
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| − | ** 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) ===
| + | The Einstein Toolkit is a collection of software components and tools for simulating and analyzing general relativistic astrophysical systems that builds on numerous software efforts in the numerical relativity community. This includes CactusEinstein, the Carpet AMR infrastructure and the relativistic magneto-hydrodynamics codes GRHydro and IllinoisGRMHD. For parts of the toolkit, the Cactus Framework is used as the underlying computational infrastructure providing large-scale parallelization, general computational components, and a model for collaborative, portable code development. The toolkit includes modules to build complete codes for simulating black hole spacetimes as well as systems governed by relativistic magneto-hydrodynamics. |
| | | | |
| − | 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.
| + | The Einstein Toolkit uses a distributed software model and its different modules are developed, distributed, and supported either by the core team of Einstein Toolkit Maintainers, or by individual groups. Where modules are provided by external groups, the Einstein Toolkit Maintainers provide quality control for modules for inclusion in the toolkit and help coordinate support. The Einstein Toolkit Maintainers currently involve postdocs, staff and faculty from six different institutions, and host weekly meetings that are open for anyone to join in. |
| | | | |
| − | See the [Download] page on the Einstein Toolkit website for download instructions.
| + | Guiding principles for the design and implementation of the toolkit include: open, community-driven software development; well thought out and stable interfaces; separation of physics software from computational science infrastructure; provision of complete working production code; training and education for a new generation of researchers. |
| | | | |
| − | There is also a SimFactory Transition Guide which explains the important differences in the new version. (TODO)
| + | For more information about using or contributing to the Einstein Toolkit, or to join the Einstein Toolkit Consortium, please visit our web pages at <http://einsteintoolkit.org>. |
| | | | |
| − | === Remaining issues with this release ===
| + | The Einstein Toolkit is primarily supported by NSF 1212401/1212426/1212433/1212460 (Einstein Toolkit), and also by 0905046/0941653 (PetaCactus) and 0710874 (LONI Grid). |
| − | | |
| − | * 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
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| − | (line 120 of Cactus/arrangements/Carpet/CarpetReduce/src/mask_test.c):
| |
| − | -> Simulation domain volume and reduction weight sum differ
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| − | INFO (CarpetReduce): Simulation domain volume: 432000
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| − | 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.
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| − | * 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
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| − | CactusBase Standard Cactus thorns
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| − | CactusConnect
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| − | CactusElliptic
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| − | CactusIO
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| − | CactusNumerical
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| − | CactusPUGH
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| − | CactusPUGHIO
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| − | CactusTest
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| − | CactusUtils <span style="color:#00FF00">new: NoMPI</span>
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| − | | |
| − | ExternalLibraries Interfaces to external libraries, <span style="color:#00FF00">new: zlib</span>
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| − | | |
| − | Carpet Adaptive mesh refinement
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| − | | |
| − | EinsteinAnalysis Einstein Toolkit
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| − | EinsteinBase
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| − | EinsteinEOS <span style="color:#00FF00">new: EOS_Omni</span>, <span style="color:#daa520">others will be removed next release</span>
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| − | EinsteinEvolve <span style="color:#daa520">LegoExcision will be removed next release</span>
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| − | EinsteinInitialData
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| − | EinsteinUtils
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| − | | |
| − | McLachlan BSSN implementation
| |
| − | | |
| − | TAT/TATelliptic Various thorns
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| − | | |
| − | AEIThorns Thorns hosted at AEI <span style="color:#00FF00">new: PunctureTracker, SystemStatistics</span>
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| − | | |
| − | LSUThorns Thorns hosted at LSU <span style="color:#00FF00">new: Vectors</span>
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| − | | |
| − | Kranc Automated code generation
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| − | | |
| − | GetComponents Downloading tools and thorns <span style="color:#00FF00">new repository</span>
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| − | | |
| − | SimFactory Building code and running simulations
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| − | | |
| − | The Simulation Factory contains ready-to-use configuration details for
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| − | more than 60 systems, including most HPC systems at DOE,
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| − | 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 Einstein Toolkit contains about 200 regression test cases. On a large portion of the tested machines, almost all of these test suites pass, using both MPI and OpenMP parallelization. |
| | The changes between this and the previous release include: | | 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.
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| − | * 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.
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| − |
| |
| − | == Chandrasekhar (ET_2010_11) ==
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| − |
| |
| − | [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:
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| − |
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| − | Cactus Flesh
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| − |
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| − | CactusBase Standard Cactus thorns
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| − | CactusConnect
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| − | CactusElliptic
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| − | <span style="color:#FF0000">CactusExternal</span> Not part of the Einstein Toolkit anymore (use ExternalLibraries/libjpeg instead of jpeg6b)
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| − | CactusIO
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| − | CactusNumerical <span style="color:#00FF00">new: InterpToArray</span>
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| − | CactusPUGH
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| − | CactusPUGHIO
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| − | <span style="color:#00FF00">CactusTest</span> Various Cactus testsuite thorns
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| − | CactusUtils
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| − | <span style="color:#00FF00">CactusWave</span> Wavetoy example thorns
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| − |
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| − | ExternalLibraries Interfaces to external libraries (<span style="color:#00FF00">new: OpenSSL, libjpeg</span>, several updates in other thorns)
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| − |
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| − | Carpet Adaptive mesh refinement
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| − |
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| − | EinsteinAnalysis Einstein Toolkit
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| − | EinsteinBase
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| − | EinsteinEOS
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| − | EinsteinEvolve
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| − | EinsteinInitialData
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| − | EinsteinUtils
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| − |
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| − | McLachlan BSSN implementation
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| − |
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| − | TAT/TATelliptic Various thorns
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| − | AEIThorns/AEILocalInterp
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| − | LSUThorns/QuasiLocalMeasures
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| − | LSUThorns/SummationByParts
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| − |
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| − | Kranc Automated code generation
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| − |
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| − | GetComponents Downloading tools and thorns
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| − |
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| − | SimFactory Building code and running simulations
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| − |
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| − | All repositories participating in this release carry a branch
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| − | "ET_2010_11" marking this release. These release branches will be
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| − | updated if severe errors are found.
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| − |
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| − |
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| − |
| |
| − | This release has been tested on the following systems and
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| − | architectures:
| |
| − |
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| − | Workstations (Intel, Linux)
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| − | MacBook Pro notebook (Intel, Mac OS X)
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| − | Blue Drop, NCSA (Power 7, Linux)
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| − | Damiana, AEI (Intel Woodcrest cluster, Linux)
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| − | Kraken, NICS (Cray XT5, Linux)
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| − | Philip, LSU (Intel cluster, Linux)
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| − | Queen Bee, LONI (Intel cluster, Linux)
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| − | Ranger, TACC (AMD cluster, Linux)
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| − |
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| − | The Simulation Factory contains ready-to-use configuration details for
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| − | more than 20 additional systems, including most HPC systems at DOE,
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| − | 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
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| − | cases, and we will discuss this issue in a broader context in the near
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| − | future.
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| − |
| |
| − |
| |
| − |
| |
| − | The Einstein Toolkit web site contains online documentation for its
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| − | 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):
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| − | * Several Libraries can now be build in parallel-make mode, increasing compilation speed on some machines a lot.
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| − | * Several Libraries now clean up intermediate files, often using considerably less disk space per configuration.
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| − | * GRHydro includes (disabled, not yet finished) support for MHD. Don't try to use it yet, and don't get confused about that code.
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| − | * Several Libraries have been updated (ExternalLibraries)
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| − | * Simfactory received several updates, and this will likely be the last release with the Perl version.
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| − | * The links in the Reference manual now work (again).
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| − | * A lot of other bugs and testsuites were corrected.
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| − |
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| − |
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| − |
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| − | On behalf of the Einstein Toolkit Consortium: the "Chandrasekhar" Release Team
| |
| − |
| |
| − | Gabrielle Allen
| |
| − | Eloisa Bentivegna
| |
| − | Tanja Bode
| |
| − | Peter Diener
| |
| − | Roland Haas
| |
| − | Ian Hinder
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| − | Frank Löffler
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| − | Bruno Mundim
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| − | Christian D. Ott
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| − | Erik Schnetter
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| − | Eric Seidel
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| − | Michael Thomas
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| − |
| |
| − | November 23, 2010
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| − |
| |
| − | == 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
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| − |
| |
| − | CactusBase Standard Cactus thorns
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| − | CactusConnect
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| − | CactusElliptic
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| − | CactusExternal
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| − | CactusIO
| |
| − | CactusNumerical
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| − | CactusPUGH
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| − | CactusPUGHIO
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| − | CactusUtils
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| − |
| |
| − | ExternalLibraries Interfaces to external libraries
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| − |
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| − | Carpet Adaptive mesh refinement
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| − |
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| − | EinsteinAnalysis Einstein Toolkit
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| − | EinsteinBase
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| − | EinsteinEOS
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| − | EinsteinEvolve
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| − | EinsteinInitialData
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| − | EinsteinUtils
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| − |
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| − | McLachlan BSSN implementation
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| − |
| |
| − | TAT/TATelliptic Various thorns
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| − | AEIThorns/AEILocalInterp
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| − | LSUThorns/QuasiLocalMeasures
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| − | LSUThorns/SummationByParts
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| − |
| |
| − | 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
| + | Larger changes since last release |
| − | 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.
| |
| | | | |
| | + | How to upgrade from Brahe (ET_2016_05) |
| | | | |
| | + | To upgrade from the previous release, use GetComponents with the new component list to check out the new version. |
| | | | |
| − | The Einstein Toolkit web site contains online documentation for its
| + | See the Download page on the Einstein Toolkit website for download instructions. |
| − | 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>.
| |
| | | | |
| | + | 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 user name. See the Machine notes below. |
| | | | |
| − | On behalf of the Einstein Toolkit Consortium: the "Bohr" Release Team
| |
| | | | |
| − | Gabrielle Allen
| + | == Older Releases == |
| − | Eloisa Bentivegna
| |
| − | Tanja Bode
| |
| − | Peter Diener
| |
| − | Roland Haas
| |
| − | Ian Hinder
| |
| − | Frank Loeffler
| |
| − | Bruno Mundim
| |
| − | Erik Schnetter
| |
| − | Eric Seidel
| |
| | | | |
| − | June 17, 2010
| + | The final release information of older releases can be found [[http://einsteintoolkit.org/about/releases/ here]]. |
Unnamed (ET_2016_11)
NOTE: This release text is work in progress, meant for an upcoming release of the Einstein Toolkit, not of an already released version.
We are pleased to announce the fourteenth release (code name "Unnamed") of the Einstein Toolkit, an open, community developed software infrastructure for relativistic astrophysics. This release includes, among other things, TODO. In addition, bug fixes accumulated since the previous release in May 2016 have been included.
The Einstein Toolkit is a collection of software components and tools for simulating and analyzing general relativistic astrophysical systems that builds on numerous software efforts in the numerical relativity community. This includes CactusEinstein, the Carpet AMR infrastructure and the relativistic magneto-hydrodynamics codes GRHydro and IllinoisGRMHD. For parts of the toolkit, the Cactus Framework is used as the underlying computational infrastructure providing large-scale parallelization, general computational components, and a model for collaborative, portable code development. The toolkit includes modules to build complete codes for simulating black hole spacetimes as well as systems governed by relativistic magneto-hydrodynamics.
The Einstein Toolkit uses a distributed software model and its different modules are developed, distributed, and supported either by the core team of Einstein Toolkit Maintainers, or by individual groups. Where modules are provided by external groups, the Einstein Toolkit Maintainers provide quality control for modules for inclusion in the toolkit and help coordinate support. The Einstein Toolkit Maintainers currently involve postdocs, staff and faculty from six different institutions, and host weekly meetings that are open for anyone to join in.
Guiding principles for the design and implementation of the toolkit include: open, community-driven software development; well thought out and stable interfaces; separation of physics software from computational science infrastructure; provision of complete working production code; training and education for a new generation of researchers.
For more information about using or contributing to the Einstein Toolkit, or to join the Einstein Toolkit Consortium, please visit our web pages at <http://einsteintoolkit.org>.
The Einstein Toolkit is primarily supported by NSF 1212401/1212426/1212433/1212460 (Einstein Toolkit), and also by 0905046/0941653 (PetaCactus) and 0710874 (LONI Grid).
The Einstein Toolkit contains about 200 regression test cases. On a large portion of the tested machines, almost all of these test suites pass, using both MPI and OpenMP parallelization.
The changes between this and the previous release include:
Larger changes since last release
How to upgrade from Brahe (ET_2016_05)
To upgrade from the previous release, use GetComponents with the new component list to check out the new version.
See the 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 user name. See the Machine notes below.
Older Releases
The final release information of older releases can be found [here].
