If it is available, yes - though you can control that by setting the oob_tcp_if_include[exclude] flags
On Apr 5, 2010, at 3:44 PM, David Turner wrote:
> Hi all,
> Please, some clarification. I have built Open MPI 1.4.1 against
> our IB verbs layer, and all seems well. But a question has come
> up about IPoIB. While all communications are using the "native"
> IB interface (verbs), will mpirun use IPoIB during job launch
> and teardown?
> If it matters, resource allocation is via torque.
> Best regards,
> David Turner
> User Services Group email: dpturner_at_[hidden]
> NERSC Division phone: (510) 486-4027
> Lawrence Berkeley Lab fax: (510) 486-4316
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