v5.0.x: refactor UCC collective operations to handle MPI_IN_PLACE correctly #13228
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…orrectly Updated the initialization functions for allgather, allgatherv, alltoall, alltoallv, gather, gatherv, scatter, and scatterv to improve handling of the MPI_IN_PLACE argument. In case of MPI_IN_PLACE for these collectives corresponding datatype and count should be ignored. Signed-off-by: Sergey Lebedev <[email protected]> (cherry picked from commit af21149)
janjust
approved these changes
May 5, 2025
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Backporting #13224