[Users] Einstein Toolkit Release

[Frank Loeffler]

We are pleased to announce the second release (code name
"Chandrasekhar") of the Einstein Toolkit, an open, community developed
software infrastructure for relativistic astrophysics. This release is
mainly a maintenance release incorporating 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 builds on numerous software efforts in the numerical relativity
community including CactusEinstein, the Carpet AMR infrastructure and on
the public version of the Whisky hydrodynamics code (now modified and
called GRHydro). 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 hydrodynamics. Current development in the
consortium is targeted at providing additional infrastructure for
general relativistic magnetohydrodynamics.

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 five 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 detailed release announcement can be found here:
<http://einsteintoolkit.org/toolkit/releases/ET_2010_11_announcement.php>.

The Einstein Toolkit is primarily supported by NSF
0903973/0903782/0904015 (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
Consortium (2010-11-23) 

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