code: def is_primary_worker():
      """
      Determine if we are the primary (rank 0)  worker.
  
      Returns False if we are a secondary worker. Returns True if we are either (1) not in
      distributed mode (2) or are the primary (rank 0) worker.
      """
      return not is_distributed() or dist.get_rank() == 0
  
file_path: ParlAI/parlai/utils/distributed.py
imports: import builtins
  import copy
  import os
  import pickle
  import contextlib
  import subprocess
  import socket
  import parlai.utils.logging
label_desc: Use image node_id 3 for calling a global function with example usage: is_primary_worker() and returns: unknown