[mpich-discuss] mpich2 and IPoIB

[Fabio Motezuki]

Hi all,

I'm working on a cluster where each node is connected with two networks:

eth0 - gigabit ethernet
ib0 - IP over infiniband

I would like to use the ib0 net for all mpi communications, but when I 
start the example cpi all comunications go through eth0 is this the 
expected behavior?

I'm launching the example program with "mpiexec -machinefile mf -n 16 
./cpi" where the file "mf" contains the ip address of infiniband cards.

Fabio