Update app.py

app.py

@@ -96,7 +96,7 @@ Set the environment variable `model` to change the model:
         'liuhaotian/llava-v1.6-vicuna-7b',
     ]
     bits = int(os.getenv("bits", 16))
-    model = os.getenv("model", models[-1])
+    model = os.getenv("model", models[0])
     available_devices = os.getenv("CUDA_VISIBLE_DEVICES", "0")
     model_path, model_name = model, model.split("/")[-1]
 
@@ -104,7 +104,7 @@ Set the environment variable `model` to change the model:
 
 
     # Wait for worker and controller to start
-    time.sleep(10)
+    time.sleep(60)
 
     exit_status = 0
     try: