[MPI_Intercomm_create] Peer_comm intercommunicator is now allowed #13444
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Hello! The Git Commit Checker CI bot found a few problems with this PR: 6428260: [MPI_Intercomm_create] Peer_comm intercommunicator...
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Signed-off-by: Brelle Emmanuel <emmanuel.brelle@atos.net>
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bosilca
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Oct 15, 2025
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MPI 5.0 specification (section 7.6) allows MPI_Intercomm_create peer_comm to be either an intracommunicator or any kind of communicator.
In the current implementation this communicator is only used by local root in PML send/recv communications.
Unless I missed something, I should be OK to release the intracommunicator constrain.