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@bosilca bosilca commented Nov 23, 2023

Rework the logic to avoid creating temporary arrays of processes. Indeed, in order to call into the PMIX_Fence we only need an array of pmix_proc_t which is already inefficient enough to not require an intermediary step via opal_procname_t.

Fixes #12004

Rework the logic to avoid creating temporary arrays of processes.
Indeed, in prder to call into the PMIX_Fence we only need an array
of pmix_proc_t which is already inneficient enough to not require an
intermediary step via opal_procname_t.

Fixes open-mpi#12004

Signed-off-by: George Bosilca <bosilca@icl.utk.edu>
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The flow hangs when using MPI_Comm_Spawn for large number of processes

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