In MPMD case, add slots given to each of the executables instead of overwriting

orte/util/dash_host/dash_host.c

@@ -266,13 +266,12 @@ int orte_util_add_dash_host_nodes(opal_list_t *nodes,
             if (0 == strcmp(nd->name, node->name)) {
                 found = true;
                 OPAL_OUTPUT_VERBOSE((1, orte_ras_base_framework.framework_output,
-                                     "%s dashhost: found existing node %s on input list - ignoring",
+                                     "%s dashhost: found existing node %s on input list - adding slots",
                                      ORTE_NAME_PRINT(ORTE_PROC_MY_NAME), node->name));
                 /* transfer across the number of slots */
-                node->slots = nd->slots;
+                node->slots += nd->slots;
                 if (ORTE_FLAG_TEST(nd, ORTE_NODE_FLAG_SLOTS_GIVEN)) {
                     ORTE_FLAG_SET(node, ORTE_NODE_FLAG_SLOTS_GIVEN);
-                    node->slots = nd->slots;
                 }
                 break;
             }