(This might not be the right forum for this, but it seemed best to me. If not, please move.)
I was wondering if anyone at PGI or in the Forum Community had a “best” build strategy for MVAPICH2 1.5 with PGI 2010, a la Open MPI, say:
I’m just building for one node, so I’m looking mainly at just the MPI bit of MVAPICH2 without the need for all the Infiniband/OFED/etc. I know it’s odd to use MVAPICH2 on a single node, but it’s what’s used in large clusters here, so I thought I’d be nice to troubleshoot building my code with a PGI+MVAPICH2 environment in a more controlled area (and I assume the OFED is done correctly on the larger clusters maintained by specialists).
I’m also looking for optimizations that have worked. Is -fast viable, or do you need to dial down?