Make master continue the -host behavior of prior releases: use of -host <foo> specifies a single slot. Requests to run more than one process will require either specifying slots using the "-host foo:N" syntax, or adding --oversubscribe to the cmd line.

Signed-off-by: Ralph Castain <rhc@open-mpi.org>

orte/util/dash_host/dash_host.c

@@ -10,7 +10,7 @@
  * Copyright (c) 2004-2005 The Regents of the University of California.
  *                         All rights reserved.
  * Copyright (c) 2013      Cisco Systems, Inc.  All rights reserved.
- * Copyright (c) 2014-2016 Intel, Inc.  All rights reserved.
+ * Copyright (c) 2014-2017 Intel, Inc.  All rights reserved.
  * Copyright (c) 2015      Research Organization for Information Science
  *                         and Technology (RIST). All rights reserved.
  * Copyright (c) 2016      IBM Corporation.  All rights reserved.
@@ -259,6 +259,7 @@ int orte_util_add_dash_host_nodes(opal_list_t *nodes,
                 }
             } else {
                 node->slots = 1;
+                ORTE_FLAG_SET(node, ORTE_NODE_FLAG_SLOTS_GIVEN);
             }
             opal_list_append(&adds, &node->super);
         }