Index: opal/mca/hwloc/hwloc132/hwloc/src/topology-solaris.c
===================================================================
--- opal/mca/hwloc/hwloc132/hwloc/src/topology-solaris.c	(revision 28036)
+++ opal/mca/hwloc/hwloc132/hwloc/src/topology-solaris.c	(working copy)
@@ -137,6 +137,7 @@
   int depth = hwloc_get_type_depth(topology, HWLOC_OBJ_NODE);
   int n;
   int i;
+  processorid_t binding;
 
   if (depth < 0) {
     errno = ENOSYS;
@@ -146,6 +147,15 @@
   hwloc_bitmap_zero(hwloc_set);
   n = hwloc_get_nbobjs_by_depth(topology, depth);
 
+  /* first check if processor_bind() was used to bind to a single processor rather than to an lgroup */
+
+  if ( processor_bind(idtype, id, PBIND_QUERY, &binding) == 0 && binding != PBIND_NONE ) {
+    hwloc_bitmap_only(hwloc_set, binding);
+    return 0;
+  }
+
+  /* if not, check lgroups */
+
   for (i = 0; i < n; i++) {
     hwloc_obj_t obj = hwloc_get_obj_by_depth(topology, depth, i);
     lgrp_affinity_t aff = lgrp_affinity_get(idtype, id, obj->os_index);