code: def synchronize():
      if not torch.distributed.is_available():
          return
      if not torch.distributed.is_initialized():
          return
      world_size = torch.distributed.get_world_size()
      if world_size == 1:
          return
      torch.distributed.barrier()
  
file_path: ColossalAI/examples/community/roberta/pretraining/utils/exp_util.py
imports: import functools
  import os
  import shutil
  import psutil
  import torch
  from colossalai.legacy.core import global_context
label_desc: Use image node_id 10 for calling a global function with example usage: synchronize() without return types