Bozo check for topology info

This commit was SVN r25398.

orte/mca/rmaps/ppr/help-orte-rmaps-ppr.txt

@@ -69,3 +69,13 @@ this topology can support:
   PPR: %s
 
 Please revise the conflict and try again.
+#
+[ppr-topo-missing]
+A ppr pattern was specified, but the topology information
+for the following node is missing:
+
+  Node:  %s
+
+Please ensure that vm launch mode is enabled, either via the
+-vm option to mpirun or using the orte_vm_launch MCA
+parameter.

orte/mca/rmaps/ppr/rmaps_ppr.c

@@ -129,6 +129,13 @@ static int ppr(orte_job_t *jdata)
         /* cycle across the nodes */
         nprocs_mapped = 0;
         while (NULL != (node = (orte_node_t*)opal_list_remove_first(&node_list))) {
+            /* bozo check */
+            if (NULL == node->topology) {
+                orte_show_help("help-orte-rmaps-ppr.txt", "ppr-topo-missing",
+                               true, node->name);
+                rc = ORTE_ERR_SILENT;
+                goto error;
+            }
             /* add the node to the map */
             if (ORTE_SUCCESS > (rc = opal_pointer_array_add(jdata->map->nodes, (void*)node))) {
                 ORTE_ERROR_LOG(rc);