> > Your MPI (and OpenMP) should do this for you. > > Although not always correctly, it may assume that it can > allocate from core 0 onwards leading to odd performance > issues if you happen to get two 4 CPU jobs running on the > same node..
Most clusters I've seen aren't used that way (whole nodes only), but sure, you can always consult the manual in that case. Scali has posted here several times about how they handle it, and I believe the PathScale OpenMP and InfiniPath MPI manuals explicitly discuss it. OpenMPI discusses how they don't yet handle this case at: http://www.open-mpi.de/faq/?category=tuning#using-paffinity -- greg _______________________________________________ Beowulf mailing list, Beowulf@beowulf.org To change your subscription (digest mode or unsubscribe) visit http://www.beowulf.org/mailman/listinfo/beowulf
