Speed up

Signed-off-by: Jael Gu <mengjia.gu@zilliz.com>

auto_transformers.py

@@ -20,7 +20,7 @@ from pathlib import Path
 from typing import Union
 from collections import OrderedDict
 
-from transformers import AutoModel
+from transformers import AutoTokenizer, AutoConfig, AutoModel
 
 from towhee.operator import NNOperator
 from towhee import register
@@ -67,9 +67,17 @@ class AutoTransformers(NNOperator):
                  norm: bool = False
                  ):
         super().__init__()
-        self._device = device
+        if device:
+            self.device = device
+        else:
+            self.device = 'cuda' if torch.cuda.is_available() else 'cpu'
         self.model_name = model_name
-        self.user_tokenizer = tokenizer
+        if tokenizer:
+            self.tokenizer = tokenizer
+        else:
+            self.tokenizer = AutoTokenizer.from_pretrained(self.model_name)
+        if not self.tokenizer.pad_token:
+            self.tokenizer.pad_token = '[PAD]'
         self.norm = norm
         self.checkpoint_path = checkpoint_path
 
@@ -120,18 +128,8 @@ class AutoTransformers(NNOperator):
         model.eval()
         return model
 
-    @property
-    def device(self):
-        if self._device is None:
-            if self._device_id < 0:
-                self._device = torch.device('cpu')
-            else:
-                self._device = torch.device(self._device_id)
-        return self._device
-
     @property
     def model_config(self):
-        from transformers import AutoConfig
         configs = AutoConfig.from_pretrained(self.model_name)
         return configs
 
@@ -147,21 +145,6 @@ class AutoTransformers(NNOperator):
         }
         return onnx_config
 
-    @property
-    def tokenizer(self):
-        from transformers import AutoTokenizer
-        try:
-            if self.user_tokenizer:
-                t = tokenizer
-            else:
-                t = AutoTokenizer.from_pretrained(self.model_name)
-            if not t.pad_token:
-                t.pad_token = '[PAD]'
-        except Exception as e:
-            log.error(f'Fail to load tokenizer.')
-            raise e
-        return t
-
     def post_proc(self, token_embeddings, inputs):
         token_embeddings = token_embeddings.to(self.device)
         attention_mask = inputs['attention_mask'].to(self.device)