support cpu deploy_test (#769)

tools/deploy_test.py

@@ -53,6 +53,7 @@ class ONNXRuntimeSegmentor(BaseSegmentor):
             self.io_binding.bind_output(name)
         self.cfg = cfg
         self.test_mode = cfg.model.test_cfg.mode
+        self.is_cuda_available = is_cuda_available
 
     def extract_feat(self, imgs):
         raise NotImplementedError('This method is not implemented.')
@@ -65,6 +66,10 @@ class ONNXRuntimeSegmentor(BaseSegmentor):
 
     def simple_test(self, img: torch.Tensor, img_meta: Iterable,
                     **kwargs) -> list:
+        if not self.is_cuda_available:
+            img = img.detach().cpu()
+        elif self.device_id >= 0:
+            img = img.cuda(self.device_id)
         device_type = img.device.type
         self.io_binding.bind_input(
             name='input',