We are pleased to announce the nineth release (code name +
We are pleased to announce the ninth release (code name "Wheeler= ") of the Einstein Toolkit, an open, community developed software infrastructure for relativistic astrophysics. This release includes various improvements to the File [added]: ET_2014_05_announcement.txt Delta lines: +198 -0 =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 --- about/releases/ET_2014_05_announcement.txt (rev 0) +++ about/releases/ET_2014_05_announcement.txt 2014-05-21 15:36:47 UTC (rev 1= 333) @@ -0,0 +1,198 @@ +We are pleased to announce the ninth release (code name "Wheeler") of the +Einstein Toolkit, an open, community developed software infrastructure for +relativistic astrophysics. + +This release includes various improvements to the Cactus flesh, Carpet and +GRHydro. In addition, bug fixes accumulated since the previous release in +November 2013 have been included. + +For more detailed information about the "Wheeler" release please read +the long release announcement on the Einstein Toolkit web pages: +http://einsteintoolkit.org/about/releases/ET_2014_05_announcement.php. + +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 including +CactusEinstein, the Carpet AMR infrastructure and the relativistic +magneto-hydrodynamics code GRHydro. The Cactus Framework is used as the unde= rlying +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 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 0905046/0941= 653 +(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: + +=3D=3D=3D Larger changes since last release =3D=3D=3D + +* Removed components + - ADM + - LegoExcision + +* Deprecated components (still included, but don't use for new code) + - ADMConstraints (use ML_ADMConstraints instead) + - ADMCoupling + - ADMMacros + - DistortedBHIVP + - IDAxiBrillBH + - IDAxiOddBrillBH + - RotatingDBHIVP +=20 +* New components: + - CactusExamples: 10 small example thorns + - TestMoL + - CarpetExtra: 10 test thorns + - IllinoisGRMHD (not enabled by default, proposed for the next release) +=20 +* Simfactory: updates to many machines +=20 +* Cactus flesh: + - Cactus complex number arithmetic functions are deprecated + - Drop explicit support for Fortran 77 in Cactus + - Prevent Cactus from choking on very large parameter files + - Update to work with Chemora. Not currently used by regular Cactus. + - The workaround CCTK_DISABLE_RESTRICT for bugs in the Intel compiler + is no longer necessary for version newer or equal 14, which is now + taken into account. + - Support for Clang on OSX +=20 +* MoL: Automatically count number of evolved variables + +* ADMConstraints: remove support for conformal metrics + +* EOS_Omni: new c++ backend + +* GRHydro + - rewrite major parts of the code in c++, both versions are still included, + the c++ version is not enabled by default yet (see parameter use_cxx_code= ). + The default will change for the next release and the Fortran version will + be removed after that. + - Lots of smaller changes and bug fixes +=20 +* Kranc:=20 + - Use a namespace to protect certain thorn functions; this means that + calculations can no longer be named the same as the thorn + - Add the ability to merge arbitrary files into the thorn at + Kranc time (e.g. for docs, tests) + - Add ability to tile loops over grids + - Add ability to count floating point operations in a calculation + - Display a function call backtrace when errors are detected + during running Kranc + - Correct accidental interchange of sinh and cosh in vectorised code + - Substantial internal code cleanup and reorganization; no + intentional changes affecting the user as a result + - Improvements to Chemora support (GPUs) + - Improvements to script language support + - Make GFOffset available to calculations + - Improve support for xTensor as an alternative to TensorTools + - Include some regression tests for Kranc + - Include some unit tests for Kranc + - Make internal code generation significantly more robust + - Remove old code, including obsolete Fortran code generation + which hasn't been used or worked for a long time + - Remove almost all dependence on GenericFD; required code is + now embedded in the generated thorn + - Many other small changes +=20 +* McLachlan: optimizations + +* Carpet + - Changes to support accelerators (not used by default) + - CarpetRegrid2: support Parity Symmetry thorn + - Carpet: Apply boundary conditions during restricting + - Include string null terminator in HDF5 attributes (only important if you = happen to read them in your own scripts) +=20 +=3D=3D=3D How to upgrade from Noether (ET_2013_11) =3D=3D=3D + +To upgrade from the previous release, use GetComponents with the new thornli= st +to check out the new version. + +See the [http://einsteintoolkit.org/download Download] page on the Einstein +Toolkit website for download instructions. + +=3D=3D=3D Remaining issues with this release =3D=3D=3D + +* 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. + +* Recovering with Carpet: Carpet stores metadata (such as the simulation tim= e) + only for Carpet::max_timelevels time levels, although it is possible to + allocate more time levels. These additional time levels then cannot be + recovered; the symptom is an assertion failure during recovery. The soluti= on + is to either increase Carpet::max_timelevels, or to decrease the number of + active time levels. + +=3D=3D=3D Machine notes =3D=3D=3D + +Supported (tested) machines include: + +- Default Debian, Suse and Fedora installations +- Bethe +- Bluewaters * +- Carver +- Datura +- Gordon +- Hopper +- Loewe +- Lonestar * +- Supermike II +- Nvidia * +- Orca * +- Philip +- Queenbee +- Shelob +- Stampede (CPU) +- Supermuc +- Titan +- Trestles +- Zwicky + +A * means that a small number of tests still fail on that machine. All tests +pass on the other machines. + +- LoneStar and Stampede: defs.local.ini needs to have sourcebasedir =3D $WOR= K and + basedir =3D $SCRATCH/simulations configured for this machine. You need to + determine $WORK and $SCRATCH by logging in to the machine. + +All repositories participating in this release carry a branch ET_2014_05 +marking this release. These release branches will be updated if severe +errors are found. + +The "Wheeler" Release Team on behalf of the Einstein Toolkit Consortium (201= 4-05-21) + +Peter Diener +Roland Haas +Ian Hinder +Frank L=C3=83=C2=B6ffler +Bruno C. Mundim +Erik Schnetter + +May 21, 2014 --===============7390292960711416592==--