message: [Simulator] add warning messages when export is not set
diff: @@ -152,6 +152,10 @@ void Simulator::strategy_search_task(const Task *task,
  "FlexFlow and import the strategy from %s\n",
  model->config.export_strategy_file.c_str());
  exit(0);
  + } else {
  + fprintf(stderr, "The discovered strategy is discarded. Please set a path"
  + " to export the strategy using --export or --export-strategy.\n");
  + exit(0);
  }
  // Start from data
  // memFBImpl->free_bytes_local(offset, model->config.simulator_work_space_size);
  