docstr: jittor 的没有转移设备的函数，因此该函数实际上无效
docstr_tok: ["jittor","\u7684\u6ca1\u6709\u8f6c\u79fb\u8bbe\u5907\u7684\u51fd\u6570\uff0c\u56e0\u6b64\u8be5\u51fd\u6570\u5b9e\u9645\u4e0a\u65e0\u6548"]
code: def move_tensor_to_device(self, tensor, device):
      """
      jittor 的没有转移设备的函数，因此该函数实际上无效
      """
      return tensor
  
file_path: fastNLP/fastNLP/core/metrics/backend/jittor_backend/backend.py
imports: import numpy
  from fastNLP.envs.imports import _NEED_IMPORT_JITTOR
  from fastNLP.core.metrics.backend import Backend
label_desc: Use image node_id 8 for calling the JittorBackend obj's underlying member method code with example usage: obj.move_tensor_to_device(tensor, device) and returns: tensor