code: def get_accelerator():
      global ds_accelerator
      if ds_accelerator is None:
          try:
              from intel_extension_for_deepspeed import XPU_Accelerator
          except ImportError as e:
              pass
          else:
              ds_accelerator = XPU_Accelerator()
              _validate_accelerator(ds_accelerator)
              return ds_accelerator
  
          from deepspeed.accelerator.cuda_accelerator import (
              CUDA_Accelerator,
          )
  
          ds_accelerator = CUDA_Accelerator()
          _validate_accelerator(ds_accelerator)
      return ds_accelerator
  
label_desc: Use image node_id 2 for calling a global function with example usage: get_accelerator() and returns: ds_accelerator, ds_accelerator