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authorLudovic Courtès <ludo@gnu.org>2019-11-29 13:51:50 +0100
committerLudovic Courtès <ludo@gnu.org>2019-11-29 15:54:19 +0100
commit68ac34e1209c8ba631aea119a2a547f267a88576 (patch)
tree6fe4019a24002429632502eea72e9ef175cdc7d7 /gnu/packages/patches
parentf02fc042a4eccdf51489bdd18db0f37d5628b92d (diff)
downloadguix-68ac34e1209c8ba631aea119a2a547f267a88576.tar.gz
gnu: openmpi: Increase priority of the PSM component.
* gnu/packages/patches/openmpi-psm2-priority.patch: Rename to...
* gnu/packages/patches/openmpi-mtl-priorities.patch: ... this.  Add hunk
to change the priority of PSM.
* gnu/packages/mpi.scm (openmpi)[source]: Adjust accordingly.
* gnu/local.mk (dist_patch_DATA): Likewise.
Diffstat (limited to 'gnu/packages/patches')
-rw-r--r--gnu/packages/patches/openmpi-mtl-priorities.patch (renamed from gnu/packages/patches/openmpi-psm2-priority.patch)14
1 files changed, 14 insertions, 0 deletions
diff --git a/gnu/packages/patches/openmpi-psm2-priority.patch b/gnu/packages/patches/openmpi-mtl-priorities.patch
index d9dd558010..fd76594ddd 100644
--- a/gnu/packages/patches/openmpi-psm2-priority.patch
+++ b/gnu/packages/patches/openmpi-mtl-priorities.patch
@@ -19,3 +19,17 @@ See <https://www.mail-archive.com/users@lists.open-mpi.org/msg33581.html>.
                                              "priority", "Priority of the PSM2 MTL component",
                                              MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,
 
+Likewise for PSM: we want InfiniPath to be taken care of by PSM, not by UCX,
+since UCX achieves worse performance.
+
+--- openmpi-4.0.2/ompi/mca/mtl/psm/mtl_psm_component.c
++++ openmpi-4.0.2/ompi/mca/mtl/psm/mtl_psm_component.c
+@@ -92,7 +92,7 @@ ompi_mtl_psm_component_register(void)
+ 
+ 
+     /* set priority high enough to beat ob1's default */
+-    param_priority = 30;
++    param_priority = 54;
+     (void) mca_base_component_var_register (&mca_mtl_psm_component.super.mtl_version,
+                                             "priority", "Priority of the PSM MTL component",
+                                             MCA_BASE_VAR_TYPE_INT, NULL, 0, 0,