v4.0.x: retain operation and datatype(s) in non blocking collectives #6806
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Signed-off-by: Aurelien Bouteiller <bouteill@icl.utk.edu> Correctly bubble up errors in NBC collective operations Signed-off-by: Aurelien Bouteiller <bouteill@icl.utk.edu> The error field of requests needs to be rearmed at start, not at create Signed-off-by: Aurelien Bouteiller <bouteill@icl.utk.edu> (cherry picked from commit open-mpi/ompi@65660e5)
MPI standard states a user MPI_Op and/or user MPI_Datatype can be free'd after a call to a non blocking collective and before the non-blocking collective completes. Retain user (only) MPI_Op and MPI_Datatype when the non blocking call is invoked, and set a request callback so they are free'd when the MPI_Request completes. Thanks Thomas Ponweiser for reporting this Fixes open-mpi#2151 Fixes open-mpi#1304 Signed-off-by: Gilles Gouaillardet <gilles@rist.or.jp> (cherry picked from commit open-mpi/ompi@0fe756d)
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Please remember to cherry-pick -x to add the linkage to the master commits when creating the release branch PRs. |
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@gpaulsen I did |
bosilca
approved these changes
Jul 13, 2019
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@ggouaillardet - Ah thanks. |
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