class_docstr: Accelerator for NVIDIA CUDA devices.
class_docstr_tok: ["Accelerator","for","NVIDIA","CUDA","devices","."]
docstr: Get the devices when set to auto.
docstr_tok: ["Get","the","devices","when","set","to","auto","."]
code: def auto_device_count() -> int:
      """Get the devices when set to auto."""
      return num_cuda_devices()
  
imports: import os
  import warnings
  from contextlib import contextmanager
  from functools import lru_cache
  from typing import Generator, List, Optional, Union, cast
  import torch
  from typing_extensions import override
  from lightning.fabric.accelerators.accelerator import Accelerator
  from lightning.fabric.accelerators.registry import _AcceleratorRegistry
  from lightning.fabric.utilities.imports import _TORCH_GREATER_EQUAL_2_0
  from lightning.fabric.utilities.rank_zero import rank_zero_info
label_desc: Use image node_id 5 for calling the CUDAAccelerator obj's underlying member method code with example usage: obj.auto_device_count() and returns: num_cuda_devices