request: correctly handle MPI_COMM_NULL #12944
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ompi_request_check_same_instance(): ignore requests whose communicator is ompi_mpi_comm_null. That can occur when pml/ucx is used and mca_pml_ucx_completed_request_init() was invoked. Thanks Christian Huettig for the report and helping with the troubleshooting. Refs. open-mpi#12942 Signed-off-by: Gilles Gouaillardet <[email protected]>
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FWIW, I think ompi/ompi/mca/pml/ucx/pml_ucx_request.c Line 285 in c6766bb |
janjust
approved these changes
Dec 10, 2024
devreal
approved these changes
Dec 10, 2024
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@ggouaillardet is this still a draft? Can it be merged? |
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@janjust sure, let's merge it! |
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@ggouaillardet thanks! I opened the v5.0.x cherry-pick here: #12984 mind give it a quick thumbs up? |
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ompi_request_check_same_instance(): ignore requests whose communicator is ompi_mpi_comm_null. That can occur when pml/ucx is used and mca_pml_ucx_completed_request_init() was invoked.
Thanks Christian Huettig for the report and helping with the troubleshooting.
Refs. #12942