Sylvain Jeaugey 6e57ed83df Fix MPI test usage ...

Only display usage from rank 0 and exit instead of continuing (and seg fault).


[ROCm/rccl commit: 9de361a1b9]

2016-04-19 10:43:38 -07:00

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rccl

Fix MPI test usage

2016-04-19 10:43:38 -07:00