Merge release-5-0 into master

[alexxy/gromacs.git] / src / gromacs / gmxlib / gmx_thread_affinity.c

diff --git a/src/gromacs/gmxlib/gmx_thread_affinity.c b/src/gromacs/gmxlib/gmx_thread_affinity.c
index 02363e230502374b1088b3dca026a22c8fe0a731..8814ec410f72b9c3bb89b871ba7bb76d995063a5 100644 (file)
--- a/src/gromacs/gmxlib/gmx_thread_affinity.c
+++ b/src/gromacs/gmxlib/gmx_thread_affinity.c
@@ -239,7 +239,8 @@ gmx_set_thread_affinity(FILE                *fplog,
          */
         MPI_Comm comm_intra;
 
-        MPI_Comm_split(MPI_COMM_WORLD, gmx_hostname_num(), cr->rank_intranode,
+        MPI_Comm_split(MPI_COMM_WORLD,
+                       gmx_physicalnode_id_hash(), cr->rank_intranode,
                        &comm_intra);
         MPI_Scan(&nthread_local, &thread0_id_node, 1, MPI_INT, MPI_SUM, comm_intra);
         /* MPI_Scan is inclusive, but here we need exclusive */