[mvapich-discuss] MPI flavor-agnostic libraries

[Gregory D Abram]

I'd like to release binary libraries that use MPI but are agnostic as to
which flavor or MPI (eg. OpenMPI, MVAPICH, LAM...) that is used by the
application linking the libraries. I've seen that there are some
significant differences that stand in the way, for example that MPI_Comm is
a pointer on OpenMPI and an integer on MVAPICH. I can see some ways that
might work, but they are pretty complex - for example, I could create an
intercept library that loads a real MPI library explicitly and do whatever
needs be done (for example, translating MPI_Comm parameters). Does anyone
know of anything that might help?

Greg
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