code: def setUp(self) -> None:
      os.environ["MASTER_ADDR"] = str("localhost")
      os.environ["MASTER_PORT"] = str(get_free_port())
      os.environ["GLOO_DEVICE_TRANSPORT"] = "TCP"
      os.environ["NCCL_SOCKET_IFNAME"] = "lo"
      self.WORLD_SIZE = 2
  
imports: import itertools
  import multiprocessing
  import os
  import unittest
  from typing import Callable
  import torch
  import torch.distributed
  import torchrec.distributed.comm_ops
  from torchrec.distributed.utils import none_throws
  from torchrec.test_utils import get_free_port, seed_and_log
label_desc: Use image node_id 1 for calling the TestAllToAll obj's underlying member method code with example usage: obj.setUp() without return types