[Beowulf] The Case for an MPI ABI
lindahl at pathscale.com
Tue Feb 22 00:08:24 EST 2005
Those of you who were at the Open IB conference last week saw me give
a talk entitled "The Case for an MPI ABI". It seems that Patrick and I
have been channeling each other AGAIN; see what happens when I move to
The first question is: Does an ABI provide enough benefit for people
to care? To care enough to sit on a committee?
If the answer is "yes", then I think we'll have one. The minimum
technical issues revolve around the contents of <mpi.h> and the names
of shared libraries. The amount of work for MPICH or OpenMPI to
support that part of an ABI is modest.
If we wanted to go farther, I have a strawman proposal which addresses
a generic startup procedure which would allow user applications, MPI
implementations, and queue systems to all live in peace and harmony.
mostly talks about why we need an ABI, who wins and loses as a result
of having one, and the pieces that could be in it. Please give it a
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