# 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 # # http://www.apache.org/licenses/LICENSE-2.0 # # Unless required by applicable law or agreed to in writing, software # distributed under the License is distributed on an "AS IS" BASIS, # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. # See the License for the specific language governing permissions and # limitations under the License. # #pylint: disable=E1101,W0201 import os import re from wa import Workload, Parameter, ConfigError, Executable from wa.utils.exec_control import once class Dhrystone(Workload): name = 'dhrystone' description = """ Runs the Dhrystone benchmark. Original source from:: http://classes.soe.ucsc.edu/cmpe202/benchmarks/standard/dhrystone.c 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 dhrystone will be pinned to cores as specified by this parameter. '''), ] @once def initialize(self, context): resource = Executable(self, self.target.abi, 'dhrystone') host_exe = context.resolver.get(resource) Dhrystone.target_exe = self.target.install(host_exe) def setup(self, context): if self.mloops: execution_mode = '-l {}'.format(self.mloops) else: execution_mode = '-r {}'.format(self.duration) if self.taskset_mask: taskset_string = '{} taskset 0x{:x} '.format(self.target.busybox, self.taskset_mask) else: taskset_string = '' self.command = '{}{} {} -t {} -d {}'.format(taskset_string, self.target_exe, execution_mode, self.threads, self.delay) if self.duration: self.timeout = self.duration + self.delay * self.threads + 10 else: self.timeout = 300 self.target.killall('dhrystone') def run(self, context): try: self.output = self.target.execute(self.command, timeout=self.timeout, check_exit_code=False) except KeyboardInterrupt: self.target.killall('dhrystone') raise def extract_results(self, context): outfile = os.path.join(context.output_directory, 'dhrystone.output') with open(outfile, 'w') as wfh: wfh.write(self.output) context.add_artifact('dhrystone-output', outfile, 'raw', "dhrystone's stdout") def update_output(self, context): score_count = 0 dmips_count = 0 total_score = 0 total_dmips = 0 for line in self.output.split('\n'): match = self.time_regex.search(line) if match: context.add_metric('time', float(match.group('time')), 'seconds', lower_is_better=True) else: match = self.bm_regex.search(line) if match: metric = 'thread {} score'.format(score_count) value = int(match.group('score')) context.add_metric(metric, value) score_count += 1 total_score += value else: match = self.dmips_regex.search(line) if match: metric = 'thread {} DMIPS'.format(dmips_count) value = int(match.group('score')) context.add_metric(metric, value) dmips_count += 1 total_dmips += value context.add_metric('total DMIPS', total_dmips) context.add_metric('total score', total_score) @once def finalize(self, context): self.target.uninstall('dhrystone') def validate(self): if self.mloops and self.duration: # pylint: disable=E0203 msg = 'mloops and duration cannot be both specified at the '\ 'same time for dhrystone.' raise ConfigError(msg) if not self.mloops and not self.duration: # pylint: disable=E0203 self.mloops = self.default_mloops