code: def main(run_experiment):
      args = parser.parse_args()
      if args.multiprocess:
          launcher = MultiProcessLauncher(
              args.world_size, run_experiment, args
          )
          launcher.start()
          launcher.join()
          launcher.terminate()
      else:
          run_experiment(args)
  
imports: import argparse
  import logging
  import os
  from examples.multiprocess_launcher import MultiProcessLauncher
label_desc: Use image node_id 2 for calling a global function with example usage: main(run_experiment) without return types