Merge pull request #5111 from rhc54/topic/silence

Silence warning

orte/mca/rmaps/base/rmaps_base_ranking.c

@@ -378,7 +378,7 @@ static int rank_by(orte_job_t *jdata,
              * algorithm, but this works for now.
              */
             i = 0;
-            while (cnt < app->num_procs && i < node->num_procs) {
+            while (cnt < app->num_procs && i < (int)node->num_procs) {
                 /* get the next object */
                 obj = (hwloc_obj_t)opal_pointer_array_get_item(&objs, i % num_objs);
                 if (NULL == obj) {

orte/mca/rmaps/round_robin/rmaps_rr_mappers.c

@@ -90,6 +90,11 @@ int orte_rmaps_rr_byslot(orte_job_t *jdata,
         } else if (0 < orte_rmaps_base_n_pernode) {
             num_procs_to_assign = orte_rmaps_base_n_pernode;
         } else if (0 < orte_rmaps_base_n_persocket) {
+            if (NULL == node->topology) {
+                orte_show_help("help-orte-rmaps-ppr.txt", "ppr-topo-missing",
+                               true, node->name);
+                return ORTE_ERR_SILENT;
+            }
             num_procs_to_assign = orte_rmaps_base_n_persocket * opal_hwloc_base_get_nbobjs_by_type(node->topology->topo, HWLOC_OBJ_PACKAGE, 0, OPAL_HWLOC_AVAILABLE);
         } else {
             /* assign a number of procs equal to the number of available slots */