code: def _init_rpc(
      ip_config,
      num_servers,
      max_queue_size,
      role,
      num_threads,
      group_id,
  ):
      """This init function is called in the worker processes."""
      try:
          utils.set_num_threads(num_threads)
          if (
              os.environ.get("DGL_DIST_MODE", "standalone")
              != "standalone"
          ):
              connect_to_server(
                  ip_config, num_servers, max_queue_size, group_id
              )
          init_role(role)
          init_kvstore(ip_config, num_servers, role)
      except Exception as e:
          print(e, flush=True)
          traceback.print_exc()
          raise e
  
imports: import atexit
  import gc
  import multiprocessing
  import os
  import queue
  import sys
  import time
  import traceback
  from enum import Enum
  from ..None import utils
  from ..base import dgl_warning, DGLError
  from .None import rpc
  from .constants import MAX_QUEUE_SIZE
  from .kvstore import close_kvstore, init_kvstore
  from .role import init_role
  from .rpc_client import connect_to_server
label_desc: Use image node_id 3 for calling a global function with example usage: _init_rpc(ip_config, num_servers, max_queue_size, role, num_threads, group_id) without return types