Over the past several years, multiple organizations have approached me asking how to develop their own plugins outside of the official Open MPI tree.  As a community, Open MPI hasn’t really been good about providing a good example of how to do this.

Today, I published three examples of compiling Open MPI plugins outside of the official source tree.  A Mercurial repository is freely clonable from my Bitbucket hosting:

(MOVED: See below)

This repository might get moved somewhere more official (e.g., inside Open MPI’s SVN), but for the moment, it’s an easily-publishable location for sharing with the world.

(UPDATE: the code has been moved to the main Open MPI SVN repository; look under contrib/build-mca-comps-outside-of-tree in the trunk and release branches starting with v1.4)

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Tags: developer, mpi, Open MPI

Open question to MPI developers: are you using the features added in MPI-2.2?

I ask because I took a little heat in the last MPI Forum meeting for not driving Open MPI to be MPI-2.2 compliant (Open MPI is MPI-2.1 compliant; there’s 4 open tickets that need to be completed for full MPI-2.2 compliance).

But I’m having a hard time finding users who want or need these specific functionalities (admittedly, they’re somewhat obscure).  We’ll definitely get to these items someday — the question is whether that someday needs to be soon or whether it can be a while from now.

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Tags: mpi, Open MPI