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[MPI_Intercomm_create] Peer_comm intercommunicator is now allowed #13444

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Merged
merged 1 commit into from
Oct 15, 2025
+3 −2
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[MPI_Intercomm_create] Peer_comm intercommunicator is now allowed #13444

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5 changes: 3 additions & 2 deletions ompi/communicator/comm.c
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Original file line number Diff line number Diff line change
Expand Up @@ -27,6 +27,7 @@
* Copyright (c) 2018-2025 Triad National Security, LLC. All rights
* reserved.
* Copyright (c) 2023-2025 Advanced Micro Devices, Inc. All rights reserved.
* Copyright (c) 2025 BULL S.A.S. All rights reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
Expand Down Expand Up @@ -1674,11 +1675,11 @@ int ompi_intercomm_create (ompi_communicator_t *local_comm, int local_leader, om
/* remember that the remote_leader and bridge_comm arguments
just have to be valid at the local_leader */
if ( local_rank == local_leader ) {
if (ompi_comm_invalid (bridge_comm) || (bridge_comm->c_flags & OMPI_COMM_INTER)) {
if (ompi_comm_invalid (bridge_comm) ) {
return MPI_ERR_COMM;
}

if ((remote_leader < 0) || (remote_leader >= ompi_comm_size(bridge_comm))) {
if ( ompi_comm_peer_invalid( bridge_comm, remote_leader) ) {
return OMPI_ERR_BAD_PARAM;
}
} /* if ( local_rank == local_leader ) */
Expand Down