+We are pleased to announce the second release (code name "Chandrasekhar") of the = Einstein Toolkit, an open, community developed software infrastructure for re= lativistic astrophysics. This release is mainly a maintenance release incorpo= rating fixes accumulated since the previous release in June 2010, as well as = additional test suites.
+ +The Einstein Toolkit is a collection of software components and tools for= simulating and analyzing general relativistic astrophysical systems that bui= lds on numerous software efforts in the numerical relativity community includ= ing CactusEinstein, the Carpet AMR infrastructure and on the public version o= f the Whisky hydrodynamics code (now modified and called GRHydro). The Cactus= Framework is used as the underlying computational infrastructure providing l= arge-scale parallelization, general computational components, and a model for= collaborative, portable code development. The toolkit includes modules to bu= ild complete codes for simulating black hole spacetimes as well as systems go= verned by relativistic hydrodynamics. Current development in the consortium i= s targeted at providing additional infrastructure for general relativistic ma= gnetohydrodynamics.
+ +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 prov= ided by external groups, the Einstein Toolkit Maintainers provide quality con= trol for modules for inclusion in the toolkit and help coordinate support. Th= e Einstein Toolkit Maintainers currently involve postdocs and faculty from fi= ve different institutions, and host weekly meetings that are open for anyone = to join in.
+ +Guiding principles for the design and implementation of the toolkit inclu= de: open, community-driven software development; well thought out and stable = interfaces; separation of physics software from computational science infrast= ructure; provision of complete working production code; training and educatio= n 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 &l= t;http://einsteintoolkit.org>.<= /p> + +
The Einstein Toolkit is primarily supported by NSF 0903973/0903782/090401= 5 (CIGR), and also by NSF 0701566/0855892 (XiRel), 0721915 (Alpaca), 0905046/= 0941653 (PetaCactus) and 0710874 (LONI Grid).
+ +The "Chandrasekhar" Release Team on behalf of the Einstein Toolkit Consor= tium (2010-11-23)
+ +This release comprises the following tools, arrangements, and thorns. Eac= h tool/arrangement/thorn may have its own licencing conditions, but all are a= vailable as open source. Green components are new in this release, shown in r= ed 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 jp= eg6b) + CactusIO + CactusNumerical new: InterpToAr= ray + CactusPUGH + CactusPUGHIO + CactusTest Various = Cactus testsuite thorns + CactusUtils + CactusWave Wavetoy = example thorns + ++
ExternalLibraries Interfaces to external libraries (new: OpenSSL, libjpeg, several updates in othe=
r 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:
+ +The Simulation +Factory contains ready-to-use configuration details for more than +20 additional systems, including most HPC systems +at LONI, +NERSC, +RZG, +and TeraGrid.
+ +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 a= ccumulation of floating-point round-off error in most cases, and we will disc= uss 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(a)einsteintoolkit.org>.
+ +The changes between this and the previous release include (not complete): +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 Seidela
+ Michael Thomas
+
November 23, 2010
+=09 + File [modified]: index.php Delta lines: +8 -6 =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D --- toolkit/releases/index.php 2010-11-23 12:21:28 UTC (rev 438) +++ toolkit/releases/index.php 2010-11-23 17:05:49 UTC (rev 439) @@ -1,9 +1,9 @@ =20 -The most recent (and, so far, only) release of the Einstein Toolkit - is ET_2010_06, code named - "Bohr". +
The most recent release of the Einstein Toolkit + is ET_2010_1, code named + "Chand= rasekhar". We expect this version to remain unchanged, save for correcting serious problems that may be detected. This version should be your first choice if you are new to the Einstein Toolkit, or if you want @@ -13,15 +13,17 @@ where (unsurprisingly) most of the development occurs. Our gentlemen's agreement is that the development version should build and run correctly on most of the important platforms at all times, - but this may not be the case on a bad day
+ but this may not be the case on a bad day. =20List of Einstein Toolkit releases: