Improve slightly memory output for clarity in parallel

src/utils/ExecutionStatManager.cpp

@@ -54,6 +54,7 @@ ExecutionStatManager::_printMaxResidentMemory() const
   std::cout << "Memory: " << rang::style::bold << Memory{parallel::allReduceSum(memory.value())}.prettyPrint()
             << rang::style::reset;
   if (parallel::size() > 1) {
+    std::cout << " (over " << parallel::size() << " processes)";
     std::cout << " Avg: " << rang::style::bold
               << Memory{parallel::allReduceSum(memory.value()) / parallel::size()}.prettyPrint() << rang::style::reset;
     std::cout << " Min: " << rang::style::bold << Memory{parallel::allReduceMin(memory.value())}.prettyPrint()