mpirun --mca oob_tcp_if_include ib0 --mca oob tcp ...
Note that if your cluster is large and ARP tables are not fully populated,
IPoIB might not be the best idea.
Michael Di Domenico wrote:
>my cluster nodes are connected on 1g ethernet eth0/eth1 and via
>infiniband rdma and ib0
>my understanding is that openmpi will detect all these interfaces.
>using eth0/eth1 for connection setup and use rdma for msg passing
>what would be an appropriate to command line parameters to tell
>openmpi to ipoib for connection setup and rdma for message passing?
>i effectively want to ignore the 1g ethernet connections for anything
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