Enable safetensors loading for all models (#974)

vllm/model_executor/models/opt.py

@@ -297,12 +297,12 @@ class OPTForCausalLM(nn.Module):
     def load_weights(self,
                      model_name_or_path: str,
                      cache_dir: Optional[str] = None,
-                     use_np_cache: bool = False):
+                     load_format: str = "auto"):
         tensor_model_parallel_rank = get_tensor_model_parallel_rank()
         state_dict = self.state_dict()
 
         for name, loaded_weight in hf_model_weights_iterator(
-                model_name_or_path, cache_dir, use_np_cache):
+                model_name_or_path, cache_dir, load_format):
             if "lm_head.weight" in name:
                 continue