#1217: lb: warn if a node has no objects after migration

DARMA-tasking · Jan 25, 2021 · d889754 · d889754
1 parent 92c2ee9
commit d889754
Showing 1 changed file with 12 additions and 0 deletions.
diff --git a/src/vt/vrt/collection/balance/lb_invoke/lb_manager.cc b/src/vt/vrt/collection/balance/lb_invoke/lb_manager.cc
@@ -180,6 +180,18 @@ LBManager::runLB(LBProxyType base_proxy, PhaseType phase) {
     strat->applyMigrations(strat->getTransfers());
   });
 
+  runInEpochCollective([=] {
+    auto node_load = theNodeStats()->getNodeLoad();
+    auto load = node_load->find(thePhase()->getCurrentPhase());
+    if (load == node_load->end() or
+        (load != node_load->end() and load->second.empty())) {
+      vt_debug_print(
+        lb, node,
+        "LBManager: node has no objects assigned after migration\n"
+      );
+    }
+  });
+
   vt_debug_print(
     lb, node,
     "LBManager: finished migrations\n"