diff --git a/data/README.md b/data/README.md
index 4cc92b43..e43e0eed 100644
--- a/data/README.md
+++ b/data/README.md
@@ -173,7 +173,7 @@ An additional column `audios` is required. Please refer to the [sharegpt](#share
 
 Compared to the alpaca format, the sharegpt format allows the datasets have **more roles**, such as human, gpt, observation and function. They are presented in a list of objects in the `conversations` column.
 
-Note that the human and observation should appear in odd positions, while gpt and function should appear in even positions.
+Note that the human and observation should appear in odd positions, while gpt and function should appear in even positions. The gpt and function will be learned by the model.
 
 ```json
 [
diff --git a/data/README_zh.md b/data/README_zh.md
index 225993b3..56c1f424 100644
--- a/data/README_zh.md
+++ b/data/README_zh.md
@@ -172,7 +172,7 @@ KTO 数据集需要提供额外的 `kto_tag` 列。详情请参阅 [sharegpt](#s
 
 相比 alpaca 格式的数据集，sharegpt 格式支持**更多的角色种类**，例如 human、gpt、observation、function 等等。它们构成一个对象列表呈现在 `conversations` 列中。
 
-注意其中 human 和 observation 必须出现在奇数位置，gpt 和 function 必须出现在偶数位置。
+注意其中 human 和 observation 必须出现在奇数位置，gpt 和 function 必须出现在偶数位置。默认所有的 gpt 和 function 会被用于学习。
 
 ```json
 [
diff --git a/src/llamafactory/webui/components/footer.py b/src/llamafactory/webui/components/footer.py
index f1b73abb..6ee9bbce 100644
--- a/src/llamafactory/webui/components/footer.py
+++ b/src/llamafactory/webui/components/footer.py
@@ -28,14 +28,17 @@ if TYPE_CHECKING:
 
 def get_device_memory() -> "gr.Slider":
     free, total = get_current_memory()
-    used = round((total - free) / (1024**3), 2)
-    total = round(total / (1024**3), 2)
-    return gr.Slider(minimum=0, maximum=total, value=used, step=0.01)
+    if total != -1:
+        used = round((total - free) / (1024**3), 2)
+        total = round(total / (1024**3), 2)
+        return gr.Slider(minimum=0, maximum=total, value=used, step=0.01, visible=True)
+    else:
+        return gr.Slider(visible=False)
 
 
 def create_footer() -> dict[str, "Component"]:
     with gr.Row():
-        device_memory = gr.Slider(interactive=False)
+        device_memory = gr.Slider(visible=False, interactive=False)
         timer = gr.Timer(value=5)
 
     timer.tick(get_device_memory, outputs=[device_memory], queue=False)