[Beowulf] Re: Performance degrading
reuti at staff.uni-marburg.de
Tue Dec 22 20:39:32 EST 2009
Am 23.12.2009 um 01:35 schrieb Gus Correa:
> Likewise, browsing through the GA stuff I could find no direct
> to OpenMPI, only to MPICH,
> although theoretically MPI is supposed to be a standard,
> and portable programs ans libraries should work right with any MPI
> flavor (in practice I am not so sure this is true).
GA can be used with Open MPI. I just did this for Molpro. Side note:
Molpro supports now also a pure MPI-2 compilation besides the former
via TCGMSG over MPI. The TCGMSG-MPI version is faster than the plain
MPI-2 compilation. Okay, one extra step, and you get the time back.
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