code: def make_gpu_client(
      *,
      platform_name: str,
      visible_devices_flag: config.FlagHolder[str],
  ) -> xla_client.Client:
      visible_devices = visible_devices_flag.value
      allowed_devices = None
      if visible_devices != "all":
          allowed_devices = {int(x) for x in visible_devices.split(",")}
  
      if platform_name == "cuda":
          _check_cuda_versions()
  
      use_mock_gpu_client = _USE_MOCK_GPU_CLIENT.value
      num_nodes = (
          _MOCK_NUM_GPUS.value
          if use_mock_gpu_client
          else distributed.global_state.num_processes
      )
  
      return xla_client.make_gpu_client(
          distributed_client=distributed.global_state.client,
          node_id=distributed.global_state.process_id,
          num_nodes=num_nodes,
          platform_name=platform_name,
          allowed_devices=allowed_devices,
          mock=use_mock_gpu_client,  # type: ignore[call-arg]
      )
  
imports: from __future__ import annotations
  from __future__ import annotations
  from collections.abc import Mapping
  import dataclasses
  from functools import lru_cache, partial
  import importlib
  import json
  import logging
  import os
  import pkgutil
  import platform
  import sys
  import threading
  from typing import Any, Callable, Union
  import warnings
  from jax._src import config
  from jax._src import distributed
  from jax._src import traceback_util
  from jax._src import util
  from jax._src import hardware_utils
  from jax._src.cloud_tpu_init import maybe_import_libtpu
  from jax._src.lib import cuda_versions
  from jax._src.lib import xla_client
  from jax._src.lib import xla_extension
  from jax._src.lib import xla_extension_version
label_desc: Use image node_id 7 for calling a global function with example usage: make_gpu_client() and returns: xla_client