diff --git a/rootfs/agents/math_teacher/agent.toml b/rootfs/agents/math_teacher/agent.toml
index 646c8e4..f7a29a5 100644
--- a/rootfs/agents/math_teacher/agent.toml
+++ b/rootfs/agents/math_teacher/agent.toml
@@ -1,6 +1,6 @@
 instance_id = "math_teacher"
 fullname = "the one"
-llm_model_name = "gpt-4-0613"
+llm_model_name = "LLaMA2-70B"
 [[prompt]]
 role = "system"
 content = "你是精通数学的老师"
diff --git a/src/service/aios_shell/aios_shell.py b/src/service/aios_shell/aios_shell.py
index ce447e5..21c6e4a 100644
--- a/src/service/aios_shell/aios_shell.py
+++ b/src/service/aios_shell/aios_shell.py
@@ -143,13 +143,13 @@ class AIOS_Shell:
 
         nodes = ComputeNodeConfig.get_instance().initial()
         for node in nodes:
-            await node.start()
+            node.start()
             ComputeKernel.get_instance().add_compute_node(node)
 
         if await AIStorage.get_instance().is_feature_enable("llama"):
             llama_ai_node = LocalLlama_ComputeNode()
             if await llama_ai_node.initial() is True:
-                await llama_ai_node.start()
+                llama_ai_node.start()
                 ComputeKernel.get_instance().add_compute_node(llama_ai_node)
             else:
                 logger.error("llama node initial failed!")