Update app.py

app.py

@@ -49,6 +49,8 @@ if SAFETY_CHECKER:
 # Function 
 @spaces.GPU(enable_queue=True)
 def generate_image(prompt, ckpt):
+    if torch.cuda.is_available():
+        pipe = StableDiffusionXLPipeline.from_pretrained(base, torch_dtype=torch.float16, variant="fp16").to("cuda")  # Moved inside
 
     checkpoint = checkpoints[ckpt][0]
     num_inference_steps = checkpoints[ckpt][1]