Mpi IPoIB
From PHASTA Wiki
To use (Open)MPI over the IPoIB transport (faster than Ethernet, easier to use than RDMA) create a hostfile as follows:
172.16.4.11 slots=8 172.16.4.10 slots=8
Then run as you normally would (for Paraview)
mpirun --prefix /usr/local/openmpi/1.4.2-gnu -np 16 --hostfile hostfile-ib -x PATH -x LD_LIBRARY_PATH -x DISPLAY=":0" pvserver -rc -ch=portal0 -sp=5555
