Update app.py

app.py

@@ -14,8 +14,12 @@ if torch.cuda.is_available():
 else:
     torch_dtype = torch.float32
 
-pipe = DiffusionPipeline.from_pretrained(model_repo_id, torch_dtype=torch_dtype)
-pipe = pipe.to(device)
+pipe = DiffusionPipeline.from_pretrained(
+    model_repo_id,
+    torch_dtype=torch_dtype,
+    revision="fp16" if torch.cuda.is_available() else None,
+    variant="fp16" if torch.cuda.is_available() else None,
+)
 
 MAX_SEED = np.iinfo(np.int32).max
 MAX_IMAGE_SIZE = 1024