At long last, Craig Rasmussen (from Los Alamos National Laboratory) and I are ready to publish our prototype implementation of the MPI-3 Fortran bindings.  The new MPI-3 Fortran bindings are coming up for their second vote at the upcoming MPI Forum meeting in Chicago; this public release satisfies the “must implement all new proposed behavior” requirement for proposals to get in MPI-3.

The good stuff:

• The implementation is a branch off the Open MPI development trunk (i.e., it’s a bit farther ahead than the current Open MPI releases)
• Download the software here (under the same open source license as Open MPI)
• The Mercurial Bitbucket repository where we develop the code is also publicly available

Please download and give this implementation a whirl! We’d love to hear your feedback.

So let’s dive a little deeper into the details…

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Tags: Fortran, HPC, mpi, MPI-3

Over this past weekend, I had the motivation and time to overhaul Open MPI’s Fortran support for the better.  Points worth noting:

• The “use mpi” module now includes all MPI subroutines.  Strict type checking for everything!
• Open MPI now only uses a single Fortran compiler — there’s no more artificial division between “f77″ and “f90″

There’s still work to be done, of course (this is still off in a Mercurial bitbucket repo — not in the Open MPI main line SVN trunk yet), but the results of this weekend code sprint are significantly simpler Open MPI Fortran plumbing behind the scenes and a much, much better implementation of the MPI-2 “use mpi” Fortran bindings.

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Tags: Fortran, HPC, mpi, Open MPI