silence output of numactl_available dummy cmd run (#952) (#1001)

Co-authored-by: min-jean-cho <minjeanc@mlp-prod-skx-7825.ra.intel.com>

Co-authored-by: min-jean-cho <min.jean.cho@intel.com>
Co-authored-by: min-jean-cho <minjeanc@mlp-prod-skx-7825.ra.intel.com>

Author: 3 people

intel_extension_for_pytorch/cpu/launch.py

@@ -253,7 +253,7 @@ def add_lib_preload(self, lib_type=None):
     def is_numactl_available(self):
         numactl_available = False
         cmd = ["numactl", "-C", "0", "-m", "0", "ls"]
-        r = subprocess.run(cmd, env=os.environ)
+        r = subprocess.run(cmd, env=os.environ, stdout=subprocess.DEVNULL)
         if r.returncode == 0:
             numactl_available = True
         return numactl_available