Howdy, I'm new to cluster administration, MPI and high speed networks.
I've compiled my OpenMPI using these settings:
./configure CC='icc' CXX='icpc' FC='ifort' F77='ifort'
I'm running a Gromacs -np 16 job that I submitting using Sun Grid Engine
and OpenMPI that's going to run for several hours.
The job was submitted with:
mpirun -np 16 -machinefile machines mdrun ......
I've been asked by the owner of the cluster "How can you prove to me
that this openmpi job is using the Infiniband network?"
At first I thought a simple netstat -an on the compute nodes might tell
me, however I don't see the Infiniband IP's in the list so I'm thinking
maybe I need to be looking elsewhere.
MCA mpool: mvapi (MCA v1.0, API v1.0, Component v1.1.2)
MCA btl: mvapi (MCA v1.0, API v1.0, Component v1.1.2)
Thanks for any suggestions,