Detailed Release Announcement

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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 compile speed on some machines a lot.
  • Several Libraries now clean up intermediate files, resulting sometimes in considerably less disk space usage per configuration.
  • GRHydro includes (disabled, not 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, but 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 got fixed.


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 2?, 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

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