world.gop.reduce can only work for trivially-copyable types

m-a-d-n-e-s-s · Sep 17, 2024 · c62de40 · c62de40
1 parent 0d87255
commit c62de40
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/madness/world/worldgop.h b/src/madness/world/worldgop.h
@@ -781,6 +781,8 @@ namespace madness {
         /// Optimizations can be added for long messages and to reduce the memory footprint
         template <typename T, class opT>
             void reduce(T* buf, std::size_t nelem, opT op) {
+          static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable");
+
           ProcessID parent, child0, child1;
           world_.mpi.binary_tree_info(0, parent, child0, child1);
           const std::size_t nelem_per_maxmsg =