[Beowulf] MPI ABI

Toon Knapen toon.knapen at fft.be
Mon Oct 10 04:58:24 EDT 2005


Coming back to the MPI ABI discussion (which dates back from a long time
ago though), just one additional question (to which MPI implementers
certainly have an interesting opinion):

Why don't we use the fortran interface instead of the C interface.
Different C interfaces for MPI are likely incompatible because the type
behind the MPI_Group etc. might all be different. Same goes for the
named constants. In the fortran interface however the type's are always
guaranteed to be int's.

Thus AFAICT if my app uses the fortran interface of MPI I can link my
app with a dynamic library (say libmpi.so) which I can make point to
either e.g. an MPICH implementation or POE. right?

toon
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