diff --git a/app/main.py b/app/main.py
index 66bea2e..6ba53c1 100644
--- a/app/main.py
+++ b/app/main.py
@@ -179,26 +179,31 @@ tokenizer = AutoTokenizer.from_pretrained(MODEL_PATH)
 app = FastAPI()
 logger.info("Using SAFE_MIN_FREE_MB = %d MB", SAFE_MIN_FREE_MB)
 
+
+def _warm_worker(t, q):
+    try:
+        _ = model.encode(t, return_dense=True, num_processes=1)
+        q.put("ok")
+    except Exception as e:
+        q.put(str(e))
+
 # ② -------- FastAPI 启动预热 --------
 @app.on_event("startup")
 def warm_up():
-    def _warm_worker(t, q):
-        try:
-            _ = model.encode(t, return_dense=True, num_processes=1)
-            q.put("ok")
-        except Exception as e:
-            q.put(str(e))
+    logger.info("Warm-up on %s", DEVICE)
+    try:
+        texts = ["warmup"]
+        q = mp.Queue()
+        p = mp.Process(target=_warm_worker, args=(texts, q))
+        p.start()
+        p.join(timeout=60)
 
-    texts = ["warmup"]
-    q = mp.Queue()
-    p = mp.Process(target=_warm_worker, args=(texts, q))
-    p.start()
-    p.join(timeout=60)
-
-    if not q.empty() and q.get() == "ok":
-        logger.info("Warm-up complete.")
-    else:
-        logger.warning("Warm-up failed or timed out.")
+        if not q.empty() and q.get() == "ok":
+            logger.info("Warm-up complete.")
+        else:
+            logger.warning("Warm-up failed or timed out.")
+    except Exception as e:
+        logger.warning("Warm-up exception: %s", e)