Check dyno and dcgm existence before disable them (#2496)

Summary:
For systems without dyno or dcgm installed and running without sudo, the `ncu_rep` metric will get stuck asking for a sudo password.

This PR checks the command or service existence before disabling them to avoid getting stuck.

Pull Request resolved: #2496

Reviewed By: xuzhao9

Differential Revision: D64141793

Pulled By: FindHao

fbshipit-source-id: 8d52468f04e7e5a0e8d23f3562a14c83d4a5934c

torchbenchmark/util/triton_op.py

@@ -23,6 +23,7 @@
 import tabulate
 import torch
 import triton
+
 from torchbenchmark.util.env_check import fresh_triton_cache, set_random_seed
 from torchbenchmark.util.experiment.metrics import get_peak_memory
 from torchbenchmark.util.extra_args import apply_decoration_args, parse_decoration_args
@@ -1008,6 +1009,7 @@ def nsys_rep(self, input_id: int, fn_name: str) -> str:
     def ncu_trace(
         self, input_id: int, fn_name: str, replay: bool = False, profile_ir=False
     ) -> str:
+        import shutil
         import subprocess
 
         # collect the ncu trace
@@ -1031,6 +1033,7 @@ def ncu_trace(
                 "_ncu_trace_in_task",
             ]
         )
+
         # Disable DCGM
         disable_dyno_dcgm = [
             "sudo",
@@ -1045,13 +1048,26 @@ def ncu_trace(
             "stop",
             "nvidia-dcgm",
         ]
-        if (
-            subprocess.run(disable_dyno_dcgm).returncode != 0
-            and subprocess.run(disable_dcgm_service).returncode != 0
-        ):
-            warnings.warn(
-                "DCGM may not have been successfully disabled. Proceeding to collect NCU trace anyway..."
-            )
+
+        def service_exists(service_name):
+            try:
+                result = subprocess.run(
+                    ["systemctl", "status", service_name],
+                    stdout=subprocess.PIPE,
+                    stderr=subprocess.PIPE,
+                    check=True,
+                )
+                return result.returncode == 0
+            except subprocess.CalledProcessError:
+                return False
+
+        if shutil.which("dyno") or service_exists("nvidia-dcgm"):
+            dyno_result = subprocess.run(disable_dyno_dcgm).returncode
+            systemctl_result = subprocess.run(disable_dcgm_service).returncode
+            if dyno_result != 0 and systemctl_result != 0:
+                warnings.warn(
+                    "DCGM may not have been successfully disabled. Proceeding to collect NCU trace anyway..."
+                )
         ncu_output_dir = self.get_temp_path(f"ncu_traces/{fn_name}_{input_id}")
         ncu_output_dir.mkdir(parents=True, exist_ok=True)
         ext = ".csv" if not replay else ".ncu-rep"