code: def main(run_experiment):
      args = parser.parse_args()
      # run multiprocess by default
      launcher = MultiProcessLauncher(
          args.world_size, run_experiment, args
      )
      launcher.start()
      launcher.join()
      launcher.terminate()
  
imports: import argparse
  import logging
  import os
  from examples.multiprocess_launcher import MultiProcessLauncher
label_desc: Use image node_id 3 for calling a global function with example usage: main(run_experiment) without return types