osc/rdma: use correct endpoint for local state #1319
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If atomics are not globally visible (cpu and nic atomics do not mix) then a btl endpoint must be used to access local ranks. To avoid issues that are caused by having the same region registered with multiple handles osc/rdma was updated to always use the handle for rank 0. There was a bug in the update that caused osc/rdma to continue using the local endpoint for accessing the state even though the pointer/handle are not valid for that endpoint. This commit fixes the bug. Fixes open-mpi#1241. Signed-off-by: Nathan Hjelm <hjelmn@lanl.gov>
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@sjeaugey Thanks for reporting this. I can no longer reproduce this issue with this fix. |
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Jan 22, 2016
osc/rdma: use correct endpoint for local state
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All IB completion errors are gone. 👍 |
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If atomics are not globally visible (cpu and nic atomics do not mix)
then a btl endpoint must be used to access local ranks. To avoid
issues that are caused by having the same region registered with
multiple handles osc/rdma was updated to always use the handle for
rank 0. There was a bug in the update that caused osc/rdma to continue
using the local endpoint for accessing the state even though the
pointer/handle are not valid for that endpoint. This commit fixes the
bug.
Fixes #1241.
Signed-off-by: Nathan Hjelm hjelmn@lanl.gov