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.

26 November 2013

New Einstein Toolkit Release "Noether"

We are pleased to announce the eighth release (code name "Noether") 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 May 2013 have been included.

For more detailed information about the "Noether" release please read the long release announcement on the Einstein Toolkit web pages:

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 magneto-hydrodynamics code 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 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

The Einstein Toolkit is primarily supported by NSF 1212401/1212426/1212433/1212460 (Einstein Toolkit), and also by 0905046/0941653 (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 testsuites pass, using both MPI and OpenMP parallelization.

Supported (tested) machines include:
  • Default Debian, Suse and Fedora installations
  • Bethe
  • Bluewaters
  • Datura
  • Kraken
  • Loewe
  • Lonestar
  • Supermike II
  • Nvidia
  • Philip
  • Queenbee
  • Stampede
  • Titan
  • Trestles
  • Zwicky
All repositories participating in this release carry a branch ET_2013_11 marking this release.  These release branches will be updated if severe errors are found.

The "Noether" Release Team on behalf of the Einstein Toolkit Consortium (2013-11-26)

Tanja Bode
Peter Diener
Roland Haas
Ian Hinder
Frank Löffler
Bruno Mundim
Christian D. Ott
Erik Schnetter


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