gpu_metrics_collector.py

#!/usr/bin/python
# Copyright (c) Microsoft Corporation
# All rights reserved.
#
# MIT License
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated
# documentation files (the "Software"), to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and
# to permit persons to whom the Software is furnished to do so, subject to the following conditions:
# The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED *AS IS*, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
# BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
# DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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import json
import os
import subprocess
import sys
import time

from xml.dom import minidom

def check_ready_to_run():
    if sys.platform == 'win32':
        pgrep_output = subprocess.check_output('wmic process where "CommandLine like \'%nni_gpu_tool.gpu_metrics_collector%\' and name like \'%python%\'" get processId')
        pidList = pgrep_output.decode("utf-8").strip().split()
        pidList.pop(0) # remove the key word 'ProcessId'
        pidList = list(map(int, pidList))
        pidList.remove(os.getpid())
        return len(pidList) == 0
    else:
        pgrep_output =subprocess.check_output('pgrep -fx \'python3 -m nni_gpu_tool.gpu_metrics_collector\'', shell=True)
        pidList = []
        for pid in pgrep_output.splitlines():
            pidList.append(int(pid))
        pidList.remove(os.getpid())
        return len(pidList) == 0

def main(argv):
    metrics_output_dir = os.environ['METRIC_OUTPUT_DIR']
    if check_ready_to_run() == False:
        # GPU metrics collector is already running. Exit
        exit(2)
    with open(os.path.join(metrics_output_dir, "gpu_metrics"), "w") as outputFile:
        pass
    os.chmod(os.path.join(metrics_output_dir, "gpu_metrics"), 0o777)
    cmd = 'nvidia-smi -q -x'
    while(True):
        try:
            smi_output = subprocess.check_output(cmd, shell=True)
            parse_nvidia_smi_result(smi_output, metrics_output_dir)
        except:
            exception = sys.exc_info()
            for e in exception:
                print("job exporter error {}".format(e))
        # TODO: change to sleep time configurable via arguments
        time.sleep(5)

def parse_nvidia_smi_result(smi, outputDir):
    try:
        xmldoc = minidom.parseString(smi)
        gpuList = xmldoc.getElementsByTagName('gpu')
        with open(os.path.join(outputDir, "gpu_metrics"), 'a') as outputFile:
            outPut = {}
            outPut["Timestamp"] = time.asctime(time.localtime())
            outPut["gpuCount"] = len(gpuList)
            outPut["gpuInfos"] = []
            for gpuIndex, gpu in enumerate(gpuList):
                gpuInfo ={}
                gpuInfo['index'] = gpuIndex
                gpuInfo['gpuUtil'] = gpu.getElementsByTagName('utilization')[0].getElementsByTagName('gpu_util')[0].childNodes[0].data.replace("%", "").strip()
                gpuInfo['gpuMemUtil'] = gpu.getElementsByTagName('utilization')[0].getElementsByTagName('memory_util')[0].childNodes[0].data.replace("%", "").strip()
                processes = gpu.getElementsByTagName('processes')
                runningProNumber = len(processes[0].getElementsByTagName('process_info'))
                gpuInfo['activeProcessNum'] = runningProNumber

                outPut["gpuInfos"].append(gpuInfo)
            print(outPut)
            outputFile.write("{}\n".format(json.dumps(outPut, sort_keys=True)))
            outputFile.flush();
    except :
        e_info = sys.exc_info()
        print('xmldoc paring error')


if __name__ == "__main__":
    main(sys.argv[1:])