#2299: Switch condition for lb to minimal object load divided by numb…

…er of nodes

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

@@ -59,7 +59,6 @@
 #include <unordered_set>
 #include <set>
 #include <limits>
-#include <cmath>
 
 namespace vt { namespace vrt { namespace collection { namespace lb {
 
@@ -440,6 +439,9 @@ void TemperedLB::runLB(LoadType total_load) {
   auto const imb  = stats.at(lb::Statistic::Rank_load_modeled).at(
     lb::StatisticQuantity::imb
   );
+  auto const min = stats.at(lb::Statistic::Object_load_modeled).at(
+    lb::StatisticQuantity::min
+  );
   auto const load = this_load;
 
   if (target_pole_) {
@@ -451,8 +453,8 @@ void TemperedLB::runLB(LoadType total_load) {
     target_max_load_ = avg;
   }
 
-  // Use an absolute minimal bound on average load to load-balance
-  if (avg > std::sqrt(std::numeric_limits<LoadType>::epsilon())) {
+  // Use an minimal object load on average rank load to load-balance
+  if (avg > min / theContext()->getNumNodes()) {
     should_lb = max > (run_temperedlb_tolerance + 1.0) * target_max_load_;
   }