ras/lsf: Fix affinity for MPMD jobs running under LSF

orte/mca/ras/lsf/ras_lsf_module.c

@@ -11,6 +11,7 @@
  *                         All rights reserved.
  * Copyright (c) 2007      Cisco Systems, Inc.  All rights reserved.
  * Copyright (c) 2014      Intel, Inc. All rights reserved
+ * Copyright (c) 2016      IBM Corporation.  All rights reserved.
  * $COPYRIGHT$
  *
  * Additional copyrights may follow
@@ -38,6 +39,7 @@
 #include "orte/util/show_help.h"
 
 #include "orte/mca/ras/base/ras_private.h"
+#include "orte/mca/ras/base/base.h"
 #include "ras_lsf.h"
 
 
@@ -98,6 +100,8 @@ static int allocate(orte_job_t *jdata, opal_list_t *nodes)
         if (NULL != node && 0 == strcmp(nodelist[i], node->name)) {
             /* it is a repeat - just bump the slot count */
             ++node->slots;
+            opal_output_verbose(10, orte_ras_base_framework.framework_output,
+                                "ras/lsf: +++ Node (%s) [slots=%d]", node->name, node->slots);
             continue;
         }
 
@@ -109,6 +113,9 @@ static int allocate(orte_job_t *jdata, opal_list_t *nodes)
         node->slots = 1;
         node->state = ORTE_NODE_STATE_UP;
         opal_list_append(nodes, &node->super);
+
+        opal_output_verbose(10, orte_ras_base_framework.framework_output,
+                            "ras/lsf: New Node (%s) [slots=%d]", node->name, node->slots);
     }
 
     /* release the nodelist from lsf */
@@ -142,14 +149,20 @@ static int allocate(orte_job_t *jdata, opal_list_t *nodes)
         if (!OPAL_BINDING_POLICY_IS_SET(opal_hwloc_binding_policy)) {
             OPAL_SET_BINDING_POLICY(opal_hwloc_binding_policy, OPAL_BIND_TO_HWTHREAD);
         }
-        /* get the apps and set the hostfile attribute in each to point to
-         * the hostfile */
-        for (i=0; i < jdata->apps->size; i++) {
-            if (NULL == (app = (orte_app_context_t*)opal_pointer_array_get_item(jdata->apps, i))) {
-                continue;
-            }
-            orte_set_attribute(&app->attributes, ORTE_APP_HOSTFILE, true, (void*)affinity_file, OPAL_STRING);
+        /*
+         * Do not set the hostfile attribute on each app_context since that
+         * would confuse the sequential mapper when it tries to assign bindings
+         * when running an MPMD job.
+         * Instead just overwrite the orte_default_hostfile so it will be
+         * general for all of the app_contexts.
+         */
+        if( NULL != orte_default_hostfile ) {
+            free(orte_default_hostfile);
+            orte_default_hostfile = NULL;
         }
+        orte_default_hostfile = strdup(affinity_file);
+        opal_output_verbose(10, orte_ras_base_framework.framework_output,
+                            "ras/lsf: Set default_hostfile to %s",orte_default_hostfile);
 
         return ORTE_SUCCESS;
     }