Sylvain Jeaugey 49819bcb7c Fix GPU Direct RDMA detection.
Whether the network supported GPU Direct RDMA or not was ignored,
causing sockets to break when cards were local enough that NCCL
tried to use it.


[ROCm/rccl commit: 4b39a4cf91]
2018-12-04 14:42:28 -08:00
S
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