[OMPI users] Tight integration and interactive sessions with SGE

[Scott Beardsley]

I've been using OMPI 1.2.6 tightly integrated with Grid Engine for a bit 
now and it works great. However, I'm running into a problem running jobs 
from an interactive session (qlogin). I tried just doing "mpirun -np N 
/path/to/binary" where N > # of cpus per node but OMPI will just 
oversubscribe the node.

Also, I have an initialization script from the vendor that requires 
setting up local temporary directories. Prior to migration to OMPI we 
just parsed the machines file then went out to each node and created any 
necessary temp directories. Is there no way to get a list of machines 
with tight integration?

Scott