Hello,I work with an Infiniband cluster, but I want to force OpenMPI to use specific network interface.
I tried to do this for example using mpirun as follows: mpirun --map-by node --mca btl self,tcp -np 16 bin/is.C.16But counters returned by /usr/sbin/perfquery still keep showing that transmission happens over ibverbs.
There is an iboib module on a machine, but counters there (ip -s link) indicate that the ib0 interface is not used.
Could you help me to figure out how to properly tell OpenMPI not to use ibverbs?
I tried with Open MPI 2.1.0 and 1.10.2, but saw no difference in behavior. -- Regards, Maksym Planeta
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