XBraid: Parallel Time Integration with Multigrid
Software

Advice to Users

The field of parallel-in-time methods is in many ways under development, and success has been shown primarily for problems with some parabolic character.  While there are ongoing projects (here and elsewhere) looking at varied applications such as hyperbolic problems, computational fluid dynamics, power grids, medical applications, and so on, expectations should take this fact into account.  That being said, we strongly encourage new users to try our code for their application.  Every new application has its own issues to address and this will help us to improve both the algorithm and the software.

Citing XBraid

To cite XBraid, please state in your text the version number from the VERSION file, and please cite the project website in your bibliography as

[1] XBraid: Parallel multigrid in time. http://llnl.gov/casc/xbraid.

The corresponding BibTex entry is

@misc{xbraid-package,
title = {{XB}raid: Parallel multigrid in time},
howpublished = {\url{http://llnl.gov/casc/xbraid}}
}

Bug Reporting and General Support

Send email to xbraid-support@llnl.gov to report bugs, request features, or ask general usage questions.  Please include as much relevant information as possible, including all the information in the “VERSION” file located in the bottom most XBraid directory.  For compile and runtime problems, please also include the machine type, operating system, MPI implementation, compiler, and any error messages produced. 

License Information

XBraid is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License (as published by the Free Software Foundation) version 2.1 dated February 1999.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the IMPLIED WARRANTY OF MERCHANTABILITY or FITNESS FORPARTICULAR PURPOSE. See the terms and conditions of the GNU General Public License for more details.

You should receive a copy of the GNU Lesser General Public License along with XBraid; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

Software Releases

Name Version Date Size Documentation Files
XBraid 2.2.0 2.2.0 2017-10-02 293.45 KB
XBraid 2.1.0 2.1.0 2016-11-18 291.65 KB
XBraid 2.0.0 2.0.0 2016-05-25 258.21 KB
XBraid 1.1.b 1.1.b 2015-03-10 8.43 MB
XBraid 1.0.b 1.0.b 2014-10-27 11.23 MB