bcol/basesmuma: fix selection of coll/ml when only using local procs

When we are only using local ranks basesmuma needs to provide an allreduce
function for both large and small message or else the coll/ml selection
logic will fail. In the future this logic should probably be updated to
just disable allreduce in coll/ml instead of disabling coll/ml. For now
it should be correct to say the basesmuma allgather works for larger
messages.

cmr=v1.8:reviewer=manjugv

This commit was SVN r31190.

ompi/mca/bcol/basesmuma/bcol_basesmuma_allreduce.c

@@ -54,6 +54,13 @@ int bcol_basesmuma_allreduce_init(mca_bcol_base_module_t *super)
     mca_bcol_base_set_attributes(super, &comm_attribs, &inv_attribs,
                                  bcol_basesmuma_allreduce_intra_fanin_fanout,
                                  bcol_basesmuma_allreduce_intra_fanin_fanout_progress);
+
+    inv_attribs.bcol_msg_min = 10000000;
+    inv_attribs.bcol_msg_max = 10485760; /* range 4 */
+    mca_bcol_base_set_attributes(super, &comm_attribs, &inv_attribs,
+                                 bcol_basesmuma_allreduce_intra_fanin_fanout,
+                                 bcol_basesmuma_allreduce_intra_fanin_fanout_progress);
+
     /* Differs only in comm size */
 
     comm_attribs.data_src = DATA_SRC_UNKNOWN;