code: def set_device(self, device_index):
      torch.cuda.set_device(device_index)
  
imports: from deepspeed.accelerator.abstract_accelerator import DeepSpeedAccelerator
  import torch.cuda
label_desc: Use image node_id 4 for calling the CUDA_Accelerator obj's underlying member method code with example usage: obj.set_device(device_index) without return types