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Code Issues Releases Wiki Activity

Allows running the energy instrument without hotplugging

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Vasilis Flouris
2015-06-03 16:40:39 +01:00
committed by devlab
parent 953783dc2b
commit d60034f7d7
1 changed files with 15 additions and 5 deletions
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20
wlauto/instrumentation/energy_model/__init__.py
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@@ -352,6 +352,9 @@ class EnergyModelInstrument(Instrument):
description='''The index of the first cluster idle state on the device. Previous states
are assumed to be core idles. The default is ``-1``, i.e. only the last
idle state is assumed to affect the entire cluster.'''),
Parameter('no_hotplug', kind=bool, default=False,
description='''This options allows running the instrument without hotpluging cores on and off.
Disabling hotplugging will most likely produce a less accurate power model.'''),
]
def validate(self):
@@ -377,6 +380,7 @@ class EnergyModelInstrument(Instrument):
self.device_name = self.device.name
def initialize(self, context):
self.number_of_cpus = {}
self.report_template_file = context.resolver.get(File(self, REPORT_TEMPLATE_FILE))
self.em_template_file = context.resolver.get(File(self, EM_TEMPLATE_FILE))
self.little_core = (set(self.device.core_names) - set([self.big_core])).pop()
@@ -437,6 +441,10 @@ class EnergyModelInstrument(Instrument):
index_matter = [cluster, spec.num_cpus,
spec.idle_state_id, spec.idle_state_desc, context.result.iteration]
data = self.idle_data
if self.no_hotplug:
# due to that fact that hotpluging was disabled, power has to be artificially scaled
# to the number of cores that should have been active if hotplugging had occurred.
power_metric = spec.num_cpus * (power_metric / self.number_of_cpus[cluster])
data.append(index_matter + ['performance', perf_metric])
data.append(index_matter + ['{}_power'.format(self.get_core_name(cluster)), power_metric])
@@ -598,7 +606,7 @@ class EnergyModelInstrument(Instrument):
def get_cluster_specs(self, old_specs, cluster, context):
core = self.get_core_name(cluster)
number_of_cpus = sum([1 for c in self.device.core_names if c == core])
self.number_of_cpus[cluster] = sum([1 for c in self.device.core_names if c == core])
cluster_frequencies = self.get_frequencies_param(cluster)
if not cluster_frequencies:
@@ -607,13 +615,14 @@ class EnergyModelInstrument(Instrument):
idle_states = self.get_device_idle_states(cluster)
new_specs = []
for state in idle_states:
for num_cpus in xrange(1, number_of_cpus + 1):
for num_cpus in xrange(1, self.number_of_cpus[cluster] + 1):
spec = old_specs[0].copy()
spec.workload_name = self.idle_workload
spec.workload_parameters = self.idle_workload_params
spec.idle_state_id = state.id
spec.idle_state_desc = state.desc
spec.runtime_parameters['{}_cores'.format(core)] = num_cpus
if not self.no_hotplug:
spec.runtime_parameters['{}_cores'.format(core)] = num_cpus
spec.cluster = cluster
spec.num_cpus = num_cpus
spec.id = '{}_idle_{}_{}'.format(cluster, state.id, num_cpus)
@@ -627,10 +636,11 @@ class EnergyModelInstrument(Instrument):
if old_spec.workload_name != 'sysbench':
raise ConfigError('Only sysbench workload currently supported for energy_model generation.')
for freq in cluster_frequencies:
for num_cpus in xrange(1, number_of_cpus + 1):
for num_cpus in xrange(1, self.number_of_cpus[cluster] + 1):
spec = old_spec.copy()
spec.runtime_parameters['{}_frequency'.format(core)] = freq
spec.runtime_parameters['{}_cores'.format(core)] = num_cpus
if not self.no_hotplug:
spec.runtime_parameters['{}_cores'.format(core)] = num_cpus
spec.id = '{}_{}_{}'.format(cluster, num_cpus, freq)
spec.label = 'freq_{}_{}'.format(cluster, spec.label)
spec.workload_parameters['taskset_mask'] = list_to_mask(self.get_cpus(cluster))