[UX] improve profiler error message (#31125)

Signed-off-by: Boyuan Feng <boyuan@meta.com>
2025-12-22 08:45:59 -08:00
parent 022f3cea53
commit 8dd0db687b
1 changed files with 6 additions and 1 deletions
--- a/vllm/v1/worker/gpu_worker.py
+++ b/vllm/v1/worker/gpu_worker.py
@@ -634,7 +634,12 @@ class Worker(WorkerBase):

    def profile(self, is_start: bool = True):
        if self.profiler is None:
-            raise RuntimeError("Profiling is not enabled.")
+            raise RuntimeError(
+                "Profiling is not enabled. Please set --profiler-config to enable "
+                "profiling. Example: "
+                "'--profiler-config.profiler=torch --profiler-config.torch_profiler_dir"
+                "=YOUR_DIR_PATH_TO_DUMP_TRACE'"
+            )
        if is_start:
            self.profiler.start()
        else: