new_contents: from tigre.utilities import gpu
  
  # List the names of installed GPUs
  print("Querying installed GPU names")
  listDeviceNames = gpu.getGpuNames()  # noqa: N816
  print("\tDeviceCount: {}".format(len(listDeviceNames)))
  print("\tNames      : {}".format(listDeviceNames))
  print("===================")
  
  # Choose one of them
  # targetGpuName=''  # noqa: N816
  targetGpuName = "GeForce GTX 1060 6GB"  # noqa: N816
  # targetGpuName = 'GeForce RTX 2080 Ti'  # noqa: N816
  # targetGpuName = 'GeForce GTX 1070'  # noqa: N816
  
  # You can get the list of GPU IDs
  gpuids = gpu.getGpuIds(targetGpuName)
  print("Result of ({})".format(targetGpuName))
  print("\t Number of devices: {}".format(len(gpuids)))
  print("\t gpuids: {}".format(gpuids))
  
  
  # If all the GPUs you have are the same and you are going to use them all, you don't add anything to
  # the existing code.
  # Your code will look like
  #    projections=Ax(head,geo,angles,'interpolated');
  #    imgFDK=FDK(noise_projections,geo,angles);
  #    imgOSSART=OS_SART(noise_projections,geo,angles,niter);
  # or you can write like
  #    gpuids = GpuIds();
  #    projections=Ax(head,geo,angles,'interpolated', 'gpuids', gpuids);
  #    imgFDK=FDK(noise_projections,geo,angles, 'gpuids', gpuids);
  #    imgOSSART=OS_SART(noise_projections,geo,angles,niter, 'gpuids', gpuids);
  #
  # In the case where you have multiple types of GPUs installed or you are going to limit the number
  # of GPUs for a specific process, you can specify the GPUs using a GpuIds object.
  # For example, if you have four 'GeForce RTX 2080 Ti' and a 'GeForce GTX 1060 6GB' and you are going
  # to use all 'GeForce RTX 2080 Ti', use
  #    gpuids = GpuIds('GeForce RTX 2080 Ti');
  # If you use two of the GPUs, assuming whose device ID are 2 and 3, use
  #    gpuids = GpuIds();
  #    gpuids.devices = int32(2:3);
  
  gpuids = gpu.GpuIds()
  gpuids.devices = list(range(0, 10))
  print(gpuids)
  
  gpuids2080 = gpu.GpuIds("GeForce RTX 2080 Ti")
  print(gpuids2080)
  
subject: Add demo 22