text: Title: NotImplementedError: Cannot copy out of meta tensor; no data!
  Body: │                                                                                                  │
  │    403 │   │   │   │   device_map = infer_auto_device_map(                                       │
  │    404 │   │   │   │   │   self, max_memory=max_memory, no_split_module_classes=no_split_module  │
  │    405 │   │   │   │   )                                                                         │
  │ ❱  406 │   │   │   dispatch_model(                                                               │
  │    407 │   │   │   │   self,                                                                     │
  │    408 │   │   │   │   device_map=device_map,                                                    │
  │    409 │   │   │   │   offload_dir=offload_dir,                                                  │
  │                                                                                                  │
  │ C:\Users\zhaoxianghui\AppData\Local\Programs\Python\Python310\lib\site-packages\accelerate\big_m │
  │ odeling.py:355 in dispatch_model                                                                 │
  │                                                                                                  │
  │   352 │   │   and (not os.path.isdir(offload_dir) or not os.path.isfile(os.path.join(offload_d   │
  │   353 │   ):                                                                                     │
  │   354 │   │   disk_state_dict = extract_submodules_state_dict(model.state_dict(), disk_modules   │
  │ ❱ 355 │   │   offload_state_dict(offload_dir, disk_state_dict)                                   │
  │   356 │                                                                                          │
  │   357 │   execution_device = {                                                                   │
  │   358 │   │   name: main_device if device in ["cpu", "disk"] else device for name, device in d   │
  │                                                                                                  │
  │ C:\Users\zhaoxianghui\AppData\Local\Programs\Python\Python310\lib\site-packages\accelerate\utils │
  │ \offload.py:103 in offload_state_dict                                                            │
  │                                                                                                  │
  │   100 │   os.makedirs(save_dir, exist_ok=True)                                                   │
  │   101 │   index = {}                                                                             │
  │   102 │   for name, parameter in state_dict.items():                                             │
  │                                                                                                  │
  │    34 │   │   # Need to reinterpret the underlined data as int16 since NumPy does not handle b   │
  │    35 │   │   weight = weight.view(torch.int16)                                                  │
  │    36 │   │   dtype = "bfloat16"                                                                 │
  │ ❱  37 │   array = weight.cpu().numpy()                                                           │
  │    38 │   tensor_file = os.path.join(offload_folder, f"{weight_name}.dat")                       │
  │    39 │   if index is not None:                                                                  │
  │    40 │   │   if dtype is None:                                                                  │
  ╰──────────────────────────────────────────────────────────────────────────────────────────────────╯
  NotImplementedError: Cannot copy out of meta tensor; no data!
  