# 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 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::
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 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 = self.time_regex.search(line)
if match:
context.result.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.result.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.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