code: def _set_nccl_network_interface():
      """Set the appropriate NCCL network interface to use."""
  
      if "NCCL_SOCKET_IFNAME" not in os.environ:
          logger.debug(
              f"Setting NCCL_SOCKET_IFNAME to {DEFAULT_NCCL_SOCKET_IFNAME} "
              f"to prioritize ethernet connection. To override this behavior, set the "
              f"`NCCL_SOCKET_IFNAME` environment variable in your Ray runtime "
              "environment: "
              "`ray.init(runtime_env={{'env_vars': {'NCCL_SOCKET_IFNAME': 'ens5'}}}`"
          )
          os.environ["NCCL_SOCKET_IFNAME"] = DEFAULT_NCCL_SOCKET_IFNAME
  
imports: import logging
  import os
  from dataclasses import dataclass
  from datetime import timedelta
  from typing import Optional
  import torch
  import torch.distributed
  import ray
  from ray.train._internal.utils import get_address_and_port
  from ray.train._internal.worker_group import WorkerGroup
  from ray.train.backend import Backend, BackendConfig
  from ray.train.constants import DEFAULT_NCCL_SOCKET_IFNAME
  from ray.util import PublicAPI
label_desc: Use image node_id 1 for calling a global function with example usage: _set_nccl_network_interface() without return types