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Should general questions on MPI go here or Stack Overflow? An example of such a question is

http://scicomp.stackexchange.com/questions/2876/nonblocking-version-of-mpi-barrier-in-mpi-2
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Noting my obvious bias as a SciComp mod, I'd prefer that the MPI questions go here. I believe that questions on MPI would be on-topic in both places. Due to the widespread usage of MPI in computational science, I think most MPI questions would be on-topic here. (I hesitate to say "all," because you never know...)

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  • $\begingroup$ Great, pretty much what I wanted to hear. Time to add the next question. :) $\endgroup$ – Geoffrey Irving Jul 22 '12 at 22:39

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