Source code for wlauto.workloads.dhrystone

#    Copyright 2013-2015 ARM Limited
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

#pylint: disable=E1101,W0201

import os
import re

from wlauto import Workload, Parameter, Executable
from wlauto.exceptions import ConfigError

this_dir = os.path.dirname(__file__)

[docs]class Dhrystone(Workload): name = 'dhrystone' description = """ Runs the Dhrystone benchmark. Original source from:: This version has been modified to configure duration and the number of threads used. """ bm_regex = re.compile(r'This machine benchmarks at (?P<score>\d+)') dmips_regex = re.compile(r'(?P<score>\d+) DMIPS') time_regex = re.compile(r'Total dhrystone run time: (?P<time>[0-9.]+)') default_mloops = 100 parameters = [ Parameter('duration', kind=int, default=0, description='The duration, in seconds, for which dhrystone will be executed. ' 'Either this or ``mloops`` should be specified but not both.'), Parameter('mloops', kind=int, default=0, description='Millions of loops to run. Either this or ``duration`` should be ' 'specified, but not both. If neither is specified, this will default ' 'to ``{}``'.format(default_mloops)), Parameter('threads', kind=int, default=4, description='The number of separate dhrystone "threads" that will be forked.'), Parameter('delay', kind=int, default=0, description=('The delay, in seconds, between kicking off of dhrystone ' 'threads (if ``threads`` > 1).')), Parameter('taskset_mask', kind=int, default=0, description=''' The processes spawned by the workload will be pinned to cores as specified by this parameter '''), ]
[docs] def setup(self, context): host_exe = context.resolver.get(Executable(self, self.device.abi, 'dhrystone')) self.device_exe = self.device.install(host_exe) execution_mode = '-l {}'.format(self.mloops) if self.mloops else '-r {}'.format(self.duration) if self.taskset_mask: taskset_string = '{} taskset 0x{:x} '.format(self.device.busybox, self.taskset_mask) else: taskset_string = '' self.command = '{}{} {} -t {} -d {}'.format(taskset_string, self.device_exe, execution_mode, self.threads, self.delay) self.timeout = self.duration and self.duration + self.delay * self.threads + 10 or 300 self.device.killall('dhrystone')
[docs] def run(self, context): try: self.output = self.device.execute(self.command, timeout=self.timeout, check_exit_code=False) except KeyboardInterrupt: self.device.killall('dhrystone') raise
[docs] def update_result(self, context): outfile = os.path.join(context.output_directory, 'dhrystone.output') with open(outfile, 'w') as wfh: wfh.write(self.output) score_count = 0 dmips_count = 0 total_score = 0 total_dmips = 0 for line in self.output.split('\n'): match = if match: context.result.add_metric('time', float('time')), 'seconds', lower_is_better=True) else: match = if match: metric = 'thread {} score'.format(score_count) value = int('score')) context.result.add_metric(metric, value) score_count += 1 total_score += value else: match = if match: metric = 'thread {} DMIPS'.format(dmips_count) value = int('score')) context.result.add_metric(metric, value) dmips_count += 1 total_dmips += value context.result.add_metric('total DMIPS', total_dmips) context.result.add_metric('total score', total_score)
[docs] def teardown(self, context): self.device.uninstall_executable('dhrystone')
def validate(self): if self.mloops and self.duration: # pylint: disable=E0203 raise ConfigError('mloops and duration cannot be both specified at the same time for dhrystone.') if not self.mloops and not self.duration: # pylint: disable=E0203 self.mloops = self.default_mloops