code: def save_on_master(*args, **kwargs):
      if is_main_process():
          torch.save(*args, **kwargs)
  
imports: from collections import defaultdict, deque
  import datetime
  import pickle
  import time
  import errno
  import os
  from contextlib import contextmanager
  import torch
  import torch.distributed
label_desc: Use image node_id 10 for calling a global function with example usage: save_on_master() without return types