Debug cuda availability.

app.py

@@ -19,6 +19,10 @@ GUIDANCE_SCALE = 6
 
 ldm = DiffusionPipeline.from_pretrained(MODEL_ID)
 
+import torch
+print(f"cuda: {torch.cuda.is_available()}")
+print(f"device: {torch.cuda.get_device_name()}")
+
 with gr.Blocks(css=".container { max-width: 800px; margin: auto; }") as demo:
     state = gr.Variable({
         'selected': -1,