Temporarily make routed binomial the default. We are experiencing issues with

debruijn when launching fewer processes than are actually available within an
allocation. When this is fixed, please revert this change.

This commit was SVN r27376.

orte/mca/routed/binomial/routed_binomial_component.c

@@ -50,8 +50,12 @@ static int orte_routed_binomial_component_query(mca_base_module_t **module, int
 {
     /* make this selected ONLY if the user directs as this module scales
      * poorly compared to our other options
+     *
+     * XXX: make this the default until we can figure out what's going on with
+     * debruijn within undersubscribed allocations. Once debruijn is fixed,
+     * revert back to priority 0.
      */
-    *priority = 0;
+    *priority = 70;
     *module = (mca_base_module_t *) &orte_routed_binomial_module;
     return ORTE_SUCCESS;
 }

orte/mca/routed/debruijn/routed_debruijn_component.c

@@ -52,8 +52,13 @@ static int orte_routed_debruijn_component_query(mca_base_module_t **module, int
     /* Debruijn shall be our default, especially for large systems. For smaller
      * systems, we will allow other options that have even fewer hops to
      * support wireup
+     *
+     * XXX: set this to 0 until we can figure out what's going on with
+     * it within undersubscribed allocations. Once debruijn is fixed,
+     * revert back to priority 70. Note: this component seems to work fine within
+     * fully utilized allocations.
      */
-    *priority = 70;
+    *priority = 0;
     *module = (mca_base_module_t *) &orte_routed_debruijn_module;
     return ORTE_SUCCESS;
 }