ompi/communicator: set grp_instance for leader_group

edgargabriel · edgargabriel · commit 9052fda21246 · 2025-02-11T08:24:42.000-06:00
in intercomm_create_from_group, we need to set the grp_instance value for the leader_group.
This issue was exposed with the new mmemkind code and the mpi4py testsuite.

Signed-off-by: Edgar Gabriel &lt;edgar.gabriel@amd.com&gt;
diff --git a/ompi/communicator/comm.c b/ompi/communicator/comm.c
@@ -1802,6 +1802,7 @@ int ompi_intercomm_create_from_groups (ompi_group_t *local_group, int local_lead
                 ompi_comm_free (&local_comm);
                 return OMPI_ERR_OUT_OF_RESOURCE;
             }
+            leader_group->grp_instance = local_group->grp_instance;
 
             /* create a unique tag for allocating the leader communicator. we can eliminate this step
              * if we take a CID from the newly allocated block belonging to local_comm. this is

Original file line number	Diff line number	Diff line change
`@@ -1802,6 +1802,7 @@ int ompi_intercomm_create_from_groups (ompi_group_t *local_group, int local_lead`
`1802`	`1802`	`ompi_comm_free (&local_comm);`
`1803`	`1803`	`return OMPI_ERR_OUT_OF_RESOURCE;`
`1804`	`1804`	`}`
	`1805`	`+ leader_group->grp_instance = local_group->grp_instance;`
`1805`	`1806`
`1806`	`1807`	`/* create a unique tag for allocating the leader communicator. we can eliminate this step`
`1807`	`1808`	`* if we take a CID from the newly allocated block belonging to local_comm. this is`