code: def get_world_size():
      if torch.distributed.is_initialized():
          world_size = torch.distributed.get_world_size()
      else:
          world_size = 1
      return world_size
  
file_path: fairseq/examples/MMPT/mmpt/utils/__init__.py
imports: import random
  import numpy
  import torch
  from .shardedtensor import *
  from .load_config import *
label_desc: Use image node_id 2 for calling a global function with example usage: get_world_size() and returns: world_size