fix #176

Former-commit-id: 2ae3445b0d28b4ed22ddbb2cfe09089ae0c23fe1

src/llmtuner/extras/callbacks.py

@@ -47,6 +47,9 @@ class LogCallback(TrainerCallback):
         r"""
         Event called after logging the last logs.
         """
+        if not state.is_world_process_zero:
+            return
+
         cur_time = time.time()
         cur_steps = state.log_history[-1].get("step")
         elapsed_time = cur_time - self.start_time