#2201: temperedlb: add abort if we go over the threshold

Author: lifflander

src/vt/vrt/collection/balance/temperedlb/temperedlb.cc

@@ -1188,13 +1188,19 @@ void TemperedLB::doLBStages(LoadType start_imb) {
       );
 
       if (has_memory_data_) {
+        double const memory_usage = computeMemoryUsage();
+
         vt_debug_print(
           terse, temperedlb,
           "Current memory info: total memory usage={}, shared blocks here={}, "
-          "memory_threshold={}\n", computeMemoryUsage(),
+          "memory_threshold={}\n", memory_usage,
           getSharedBlocksHere().size(), mem_thresh_
         );
 
+        if (memory_usage > mem_thresh_) {
+          vtAbort("This should never be possible to go over the threshold\n");
+        }
+
         computeClusterSummary();
 
         // Verbose printing about local clusters