Compilation warning--

examples/action_api/communicating-custom-actions/CommunicatingActionsController.cpp

@@ -73,7 +73,7 @@ namespace wrench {
 
  /* Now let's create all actions */
  WRENCH_INFO("Adding %lu actions (that will communicate with each other) to the job", COMMUNICATOR_SIZE);
- for (int i = 0; i < COMMUNICATOR_SIZE; i++) {
+ for (unsigned long i = 0; i < COMMUNICATOR_SIZE; i++) {
 
  auto lambda_execute = [communicator, storage_service, file](const std::shared_ptr<wrench::ActionExecutor> &action_executor) {
  auto my_rank = communicator->join();
@@ -105,7 +105,7 @@ namespace wrench {
  // Participate in an all to all communication
  unsigned long num_comm_bytes = 1 * MB;
  std::map<unsigned long, double> sends;
- for (int i = 0; i < num_ranks; i++) {
+ for (unsigned long i = 0; i < num_ranks; i++) {
  if (i != my_rank) {
  sends[i] = num_comm_bytes;
  }