Initial commit of open source Workload Automation.

wlauto/workloads/dhrystone/__init__.py

@@ -0,0 +1,109 @@
+#    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
+from wlauto.exceptions import ConfigError
+
+
+this_dir = os.path.dirname(__file__)
+
+
+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).')),
+    ]
+
+    def setup(self, context):
+        host_exe = os.path.join(this_dir, 'dhrystone')
+        self.device_exe = self.device.install(host_exe)
+        execution_mode = '-l {}'.format(self.mloops) if self.mloops else '-r {}'.format(self.duration)
+        self.command = '{} {} -t {} -d {}'.format(self.device_exe,
+                                                  execution_mode,
+                                                  self.threads, self.delay)
+        self.timeout = self.duration and self.duration + self.delay * self.threads + 10 or 300
+
+    def run(self, context):
+        self.output = self.device.execute(self.command, timeout=self.timeout, check_exit_code=False)
+
+    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
+        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
+                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
+
+    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
+