disable xformers memory efficient attention on unet

app.py

@@ -136,16 +136,17 @@ def main(video_path, audio_path, progress=gr.Progress(track_tqdm=True)):
     unet, _ = UNet3DConditionModel.from_pretrained(
         OmegaConf.to_container(config.model),
         inference_ckpt_path,  # load checkpoint
-        #device="cpu",
+        device="cpu",
     )
 
     unet = unet.to(dtype=torch.float16)
 
+    """
     # set xformers
     
     if is_xformers_available():
         unet.enable_xformers_memory_efficient_attention()
-    
+    """
 
     pipeline = LipsyncPipeline(
         vae=vae,