code: def barrier(
      group=None,
      async_op=False,
      device_ids=None,
      prof=False,
      log_name="barrier",
      debug=get_caller_func(),
  ):
      global cdb
      return cdb.barrier(
          group=group, async_op=async_op, device_ids=device_ids
      )
  
imports: from enum import Enum
  import torch
  import os
  from ..constants import TORCH_DISTRIBUTED_DEFAULT_PORT, default_pg_timeout
  from .constants import *
  from deepspeed.utils.comms_logging import CommsLogger
  from deepspeed.utils import timer, get_caller_func
  from deepspeed.comm.torch import TorchBackend
  from deepspeed import utils
  from datetime import timedelta
  from deepspeed.comm.utils import *
label_desc: Use image node_id 25 for calling a global function with example usage: barrier(group, async_op, device_ids, prof, log_name, debug) and returns: cdb