[to #42322933] use gpu when available

ofa/caption 增加feature, 如果有gpu默认使用gpu
        Link: https://code.alibaba-inc.com/Ali-MaaS/MaaS-lib/codereview/9228113

modelscope/models/multi_modal/image_captioning_model.py

@@ -1,6 +1,7 @@
 import os.path as osp
 from typing import Any, Dict
 
+import torch.cuda
 from PIL import Image
 
 from modelscope.metainfo import Models
@@ -26,9 +27,13 @@ class OfaForImageCaptioning(Model):
         self.eval_caption = eval_caption
 
         tasks.register_task('caption', CaptionTask)
-        use_cuda = kwargs['use_cuda'] if 'use_cuda' in kwargs else False
-        use_fp16 = kwargs[
-            'use_fp16'] if 'use_fp16' in kwargs and use_cuda else False
+        if torch.cuda.is_available():
+            self._device = torch.device('cuda')
+        else:
+            self._device = torch.device('cpu')
+        self.use_fp16 = kwargs[
+            'use_fp16'] if 'use_fp16' in kwargs and torch.cuda.is_available()\
+            else False
         overrides = {
             'bpe_dir': bpe_dir,
             'eval_cider': False,
@@ -39,13 +44,11 @@ class OfaForImageCaptioning(Model):
         }
         models, cfg, task = checkpoint_utils.load_model_ensemble_and_task(
             utils.split_paths(local_model), arg_overrides=overrides)
-
         # Move models to GPU
         for model in models:
             model.eval()
-            if use_cuda:
-                model.cuda()
-            if use_fp16:
+            model.to(self._device)
+            if self.use_fp16:
                 model.half()
             model.prepare_for_inference_(cfg)
         self.models = models
@@ -68,6 +71,9 @@ class OfaForImageCaptioning(Model):
         self.task = task
 
     def forward(self, input: Dict[str, Any]) -> Dict[str, Any]:
+        import fairseq.utils
+        if torch.cuda.is_available():
+            input = fairseq.utils.move_to_cuda(input, device=self._device)
         results, _ = self.eval_caption(self.task, self.generator, self.models,
                                        input)
         return {