Benchmarks: Code Revision - Revise subprocess invoke (#178)

**Description**
Package frequently-used subprocess invoke into function.

superbench/benchmarks/micro_benchmarks/micro_base.py

@@ -4,12 +4,11 @@
 """Module of the micro-benchmark base class."""
 
 import os
-import subprocess
 import shutil
 import statistics
 from abc import abstractmethod
 
-from superbench.common.utils import logger
+from superbench.common.utils import logger, run_command
 from superbench.benchmarks import BenchmarkType, ReturnCode
 from superbench.benchmarks.base import Benchmark
 
@@ -170,14 +169,8 @@ def _benchmark(self):
                     self._curr_run_index, self._name, self._commands[cmd_idx]
                 )
             )
-            output = subprocess.run(
-                self._commands[cmd_idx],
-                stdout=subprocess.PIPE,
-                stderr=subprocess.STDOUT,
-                shell=True,
-                check=False,
-                universal_newlines=True
-            )
+
+            output = run_command(self._commands[cmd_idx])
             if output.returncode != 0:
                 self._result.set_return_code(ReturnCode.MICROBENCHMARK_EXECUTION_FAILURE)
                 logger.error(

superbench/common/utils/__init__.py

@@ -6,6 +6,7 @@
 from superbench.common.utils.logging import SuperBenchLogger, logger
 from superbench.common.utils.file_handler import rotate_dir, create_sb_output_dir, get_sb_config
 from superbench.common.utils.lazy_import import LazyImport
+from superbench.common.utils.process import run_command
 
 nv_helper = LazyImport('superbench.common.utils.nvidia_helper')
 
@@ -18,4 +19,5 @@
     'network',
     'nv_helper',
     'rotate_dir',
+    'run_command',
 ]

superbench/common/utils/process.py

+# Copyright (c) Microsoft Corporation.
+# Licensed under the MIT License.
+
+"""Process Utility."""
+
+import subprocess
+
+
+def run_command(command):
+    """Run command in string format, return the result with stdout and stderr.
+
+    Args:
+        command (str): command to run.
+
+    Return:
+        result (subprocess.CompletedProcess): The return value from subprocess.run().
+    """
+    result = subprocess.run(
+        command, stdout=subprocess.PIPE, stderr=subprocess.STDOUT, shell=True, check=False, universal_newlines=True
+    )
+
+    return result