[Profiler] Add Nsight Systems support for serving (#1098)

Signed-off-by: Jinheng Li <ahengljh@gmail.com>
Signed-off-by: Canlin Guo <961750412@qq.com>
Co-authored-by: Claude Opus 4.5 <noreply@anthropic.com>
Co-authored-by: Canlin Guo <961750412@qq.com>

vllm_omni/diffusion/diffusion_engine.py

@@ -361,15 +361,11 @@ class DiffusionEngine:
                     )
 
     def profile(self, is_start: bool = True, profile_prefix: str | None = None) -> None:
-        """Start or stop torch profiling on all diffusion workers.
+        """Start or stop profiling on all diffusion workers.
 
         Args:
             is_start: True to start profiling, False to stop.
-            profile_prefix: Optional prefix for trace filename (vLLM compat).
-
-        Note:
-            Matches vLLM's worker.profile() signature for consistency.
-            Traces are saved automatically via on_trace_ready callback.
+            profile_prefix: Optional prefix for trace filename.
         """
         if is_start:
             if profile_prefix is None: