This is the blog for the Einstein Toolkit ( The Einstein Toolkit is developing and supporting a set of open computational tools for relativistic astrophysics to enable new science, broaden our community, facilitate interdisciplinary research, and take advantage of emerging petascale computers and advanced cyberinfrastructure. We are using Blogger, which requires a google account to post or comment. Anyone can comment, but if you want to post to the Einstein Toolkit blog please request access from the maintainers.

12 May 2011

New Einstein Toolkit release "Curie"

We are pleased to announce the third release (code name "Curie") of the Einstein Toolkit, an open, community developed software infrastructure for relativistic astrophysics. This release changed the equation of state interface from two competing (EOS_Base and EOSG_Base, also known as the old and the general EOS interface), to a completely new interface called EOS_Omni, also adding support for tabulated, microphysical EOSs in the process. In addition, bug fixes accumulated since the previous release in November 2010 have been included, and the testsuites have been checked also using OpenMP.

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 the relativistic hydrodynamics code GRHydro (an updated and extended version of the public release of the Whisky code). 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.

All repositories participating in this release carry a branch
ET_2011_05 marking this release. These release branches will
be updated if severe errors are found.

For more information about using or contributing to the Einstein Toolkit, or to join the Einstein Toolkit Consortium, please visit our web pages at <>.

On behalf of the Einstein Toolkit Consortium: the "Curie" 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

April 21, 2011

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).


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