v4.1.x: refactor UCC collective operations to handle MPI_IN_PLACE correctly #13229
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…orrectly Updated the initialization functions for allgather, allgatherv, alltoall, alltoallv 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. bot:notacherrypick Signed-off-by: Sergey Lebedev <sergeyle@nvidia.com>
janjust
approved these changes
May 5, 2025
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backporting #13224
bot:notacherrypick