code: def barrier():
      """
      Call torch.distributed.barrier() if distritubed is in use
      """
      if (
          torch.distributed.is_available()
          and torch.distributed.is_initialized()
      ):
          torch.distributed.barrier()
  
file_path: zoo/src/utils/distributed.py
imports: import os
  from contextlib import contextmanager
  import torch
label_desc: Use image node_id 2 for calling a global function with example usage: barrier() without return types