code: def check_cuda_runtime():
      """
      Checks the availability of CUDA runtime/GPU, and NPP, nvJPEG, and cuFFT libraries and prints an
      appropriate warning.
      """
      global cuda_checked
      if not cuda_checked:
          cuda_checked = True
          if GetCudaVersion() == -1:
              deprecation_warning(
                  "GPU is not available. Only CPU operators are available."
              )
  
          if GetCufftVersion() == -1:
              deprecation_warning(
                  "nvidia-dali-cuda120 is no longer shipped with CUDA runtime. "
                  "You need to install it separately. cuFFT is typically "
                  "provided with CUDA Toolkit installation or an appropriate wheel. "
                  "Please check "
                  "https://docs.nvidia.com/cuda/cuda-quick-start-guide/index.html"
                  "#pip-wheels-installation-linux "
                  "for the reference."
              )
  
          if GetNppVersion() == -1:
              deprecation_warning(
                  "nvidia-dali-cuda120 is no longer shipped with CUDA runtime. "
                  "You need to install it separately. NPP is typically "
                  "provided with CUDA Toolkit installation or an appropriate wheel. "
                  "Please check "
                  "https://docs.nvidia.com/cuda/cuda-quick-start-guide/index.html"
                  "#pip-wheels-installation-linux "
                  "for the reference."
              )
  
          if GetNvjpegVersion() == -1:
              deprecation_warning(
                  "nvidia-dali-cuda120 is no longer shipped with CUDA runtime. "
                  "You need to install it separately. nvJPEG is typically "
                  "provided with CUDA Toolkit installation or an appropriate wheel. "
                  "Please check "
                  "https://docs.nvidia.com/cuda/cuda-quick-start-guide/index.html"
                  "#pip-wheels-installation-linux "
                  "for the reference."
              )
  
file_path: DALI/dali/python/nvidia/dali/backend.py
imports: from nvidia.dali.backend_impl import Init, OpSpec, LoadLibrary, GetCudaVersion, GetCufftVersion, GetNppVersion, GetNvjpegVersion
  from nvidia.dali.backend_impl import *
  from .None import __cuda_version__
  import warnings
  import os
  import sys
label_desc: Use image node_id 2 for calling a global function with example usage: check_cuda_runtime() without return types