def validate(self): # pylint: disable=too-many-branches
if not daq:
raise ImportError(import_error_mesg)
self._results = None
self._metrics = set()
if self.labels:
if len(self.labels) != len(self.resistor_values):
raise ConfigError('Number of DAQ port labels does not match the number of resistor values.')
duplicates = set([x for x in self.labels if self.labels.count(x) > 1])
if len(duplicates) > 0:
raise ConfigError('Duplicate labels: {}'.format(', '.join(duplicates)))
else:
self.labels = ['PORT_{}'.format(i) for i, _ in enumerate(self.resistor_values)]
self.server_config = ServerConfiguration(host=self.server_host,
port=self.server_port)
self.device_config = DeviceConfiguration(device_id=self.device_id,
v_range=self.v_range,
dv_range=self.dv_range,
sampling_rate=self.sampling_rate,
resistor_values=self.resistor_values,
channel_map=self.channel_map,
labels=self.labels)
try:
self.server_config.validate()
self.device_config.validate()
except ConfigurationError, ex:
raise ConfigError('DAQ configuration: ' + ex.message) # Re-raise as a WA error
def validate(self):
if not daq:
raise ImportError(import_error_mesg)
self._results = None
self._metrics = set()
if self.labels:
if not (len(self.labels) == len(self.resistor_values)): # pylint: disable=superfluous-parens
raise ConfigError(
'Number of DAQ port labels does not match the number of resistor values.'
)
else:
self.labels = [
'PORT_{}'.format(i) for i, _ in enumerate(self.resistor_values)
]
self.server_config = ServerConfiguration(host=self.server_host,
port=self.server_port)
self.device_config = DeviceConfiguration(
device_id=self.device_id,
v_range=self.v_range,
dv_range=self.dv_range,
sampling_rate=self.sampling_rate,
resistor_values=self.resistor_values,
channel_map=self.channel_map,
labels=self.labels)
try:
self.server_config.validate()
self.device_config.validate()
except ConfigurationError, ex:
raise ConfigError('DAQ configuration: ' +
ex.message) # Re-raise as a WA error
def __init__(
self,
target,
resistor_values, # pylint: disable=R0914
labels=None,
host='localhost',
port=45677,
device_id='Dev1',
v_range=2.5,
dv_range=0.2,
sample_rate_hz=10000,
channel_map=(0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 23),
):
# pylint: disable=no-member
super(DaqInstrument, self).__init__(target)
self._need_reset = True
self._raw_files = []
if execute_command is None:
raise HostError(
'Could not import "daqpower": {}'.format(import_error_mesg))
if labels is None:
labels = [
'PORT_{}'.format(i) for i in xrange(len(resistor_values))
]
if len(labels) != len(resistor_values):
raise ValueError(
'"labels" and "resistor_values" must be of the same length')
self.server_config = ServerConfiguration(host=host, port=port)
result = self.execute('list_devices')
if result.status == Status.OK:
if device_id not in result.data:
raise ValueError(
'Device "{}" is not found on the DAQ server.'.format(
device_id))
elif result.status != Status.OKISH:
raise HostError('Problem querying DAQ server: {}'.format(
result.message))
self.device_config = DeviceConfiguration(
device_id=device_id,
v_range=v_range,
dv_range=dv_range,
sampling_rate=sample_rate_hz,
resistor_values=resistor_values,
channel_map=channel_map,
labels=labels)
self.sample_rate_hz = sample_rate_hz
for label in labels:
for kind in ['power', 'voltage']:
self.add_channel(label, kind)
def validate(self):
if not daq:
raise ImportError(import_error_mesg)
self._results = None
if self.labels:
if not (len(self.labels) == len(self.resistor_values)): # pylint: disable=superfluous-parens
raise ConfigError('Number of DAQ port labels does not match the number of resistor values.')
else:
self.labels = ['PORT_{}'.format(i) for i, _ in enumerate(self.resistor_values)]
self.server_config = ServerConfiguration(host=self.server_host,
port=self.server_port)
self.device_config = DeviceConfiguration(device_id=self.device_id,
v_range=self.v_range,
dv_range=self.dv_range,
sampling_rate=self.sampling_rate,
resistor_values=self.resistor_values,
channel_map=self.channel_map,
labels=self.labels)
try:
self.server_config.validate()
self.device_config.validate()
except ConfigurationError, ex:
raise ConfigError('DAQ configuration: ' + ex.message) # Re-raise as a WA error
class Daq(Instrument):
name = 'daq'
description = """
DAQ instrument obtains the power consumption of the target device's core
measured by National Instruments Data Acquisition(DAQ) device.
WA communicates with a DAQ device server running on a Windows machine
(Please refer to :ref:`daq_setup`) over a network. You must specify the IP
address and port the server is listening on in the config file as follows ::
daq_server_host = '10.1.197.176'
daq_server_port = 45677
These values will be output by the server when you run it on Windows.
You must also specify the values of resistors (in Ohms) across which the
voltages are measured (Please refer to :ref:`daq_setup`). The values should be
specified as a list with an entry for each resistor, e.g.::
daq_resistor_values = [0.005, 0.005]
In addition to this mandatory configuration, you can also optionally specify the
following::
:daq_labels: Labels to be used for ports. Defaults to ``'PORT_<pnum>'``, where
'pnum' is the number of the port.
:daq_device_id: The ID under which the DAQ is registered with the driver.
Defaults to ``'Dev1'``.
:daq_v_range: Specifies the voltage range for the SOC voltage channel on the DAQ
(please refer to :ref:`daq_setup` for details). Defaults to ``2.5``.
:daq_dv_range: Specifies the voltage range for the resistor voltage channel on
the DAQ (please refer to :ref:`daq_setup` for details).
Defaults to ``0.2``.
:daq_sampling_rate: DAQ sampling rate. DAQ will take this many samples each
second. Please note that this maybe limitted by your DAQ model
and then number of ports you're measuring (again, see
:ref:`daq_setup`). Defaults to ``10000``.
:daq_channel_map: Represents mapping from logical AI channel number to physical
connector on the DAQ (varies between DAQ models). The default
assumes DAQ 6363 and similar with AI channels on connectors
0-7 and 16-23.
"""
parameters = [
Parameter('server_host', kind=str, default='localhost',
global_alias='daq_server_host',
description='The host address of the machine that runs the daq Server which the '
'insturment communicates with.'),
Parameter('server_port', kind=int, default=45677,
global_alias='daq_server_port',
description='The port number for daq Server in which daq insturment communicates '
'with.'),
Parameter('device_id', kind=str, default='Dev1',
global_alias='daq_device_id',
description='The ID under which the DAQ is registered with the driver.'),
Parameter('v_range', kind=float, default=2.5,
global_alias='daq_v_range',
description='Specifies the voltage range for the SOC voltage channel on the DAQ '
'(please refer to :ref:`daq_setup` for details).'),
Parameter('dv_range', kind=float, default=0.2,
global_alias='daq_dv_range',
description='Specifies the voltage range for the resistor voltage channel on '
'the DAQ (please refer to :ref:`daq_setup` for details).'),
Parameter('sampling_rate', kind=int, default=10000,
global_alias='daq_sampling_rate',
description='DAQ sampling rate. DAQ will take this many samples each '
'second. Please note that this maybe limitted by your DAQ model '
'and then number of ports you\'re measuring (again, see '
':ref:`daq_setup`)'),
Parameter('resistor_values', kind=list, mandatory=True,
global_alias='daq_resistor_values',
description='The values of resistors (in Ohms) across which the voltages are measured on '
'each port.'),
Parameter('channel_map', kind=list_of_ints, default=(0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 23),
global_alias='daq_channel_map',
description='Represents mapping from logical AI channel number to physical '
'connector on the DAQ (varies between DAQ models). The default '
'assumes DAQ 6363 and similar with AI channels on connectors '
'0-7 and 16-23.'),
Parameter('labels', kind=list_of_strs,
global_alias='daq_labels',
description='List of port labels. If specified, the lenght of the list must match '
'the length of ``resistor_values``. Defaults to "PORT_<pnum>", where '
'"pnum" is the number of the port.'),
Parameter('negative_samples', default='keep', allowed_values=['keep', 'zero', 'drop', 'abs'],
global_alias='daq_negative_samples',
description="""
Specifies how negative power samples should be handled. The following
methods are possible:
:keep: keep them as they are
:zero: turn negative values to zero
:drop: drop samples if they contain negative values. *warning:* this may result in
port files containing different numbers of samples
:abs: take the absoulte value of negave samples
"""),
Parameter('gpio_sync', kind=int, constraint=lambda x: x > 0,
description="""
If specified, the instrument will simultaneously set the
specified GPIO pin high and put a marker into ftrace. This is
to facillitate syncing kernel trace events to DAQ power
trace.
"""),
]
def initialize(self, context):
status, devices = self._execute_command('list_devices')
if status == daq.Status.OK and not devices:
raise InstrumentError('DAQ: server did not report any devices registered with the driver.')
self._results = OrderedDict()
self.gpio_path = None
if self.gpio_sync:
if not self.device.file_exists(GPIO_ROOT):
raise InstrumentError('GPIO sysfs not enabled on the device.')
try:
export_path = self.device.path.join(GPIO_ROOT, 'export')
self.device.set_sysfile_value(export_path, self.gpio_sync, verify=False)
pin_root = self.device.path.join(GPIO_ROOT, 'gpio{}'.format(self.gpio_sync))
direction_path = self.device.path.join(pin_root, 'direction')
self.device.set_sysfile_value(direction_path, 'out')
self.gpio_path = self.device.path.join(pin_root, 'value')
self.device.set_sysfile_value(self.gpio_path, 0, verify=False)
signal.connect(self.insert_start_marker, signal.BEFORE_WORKLOAD_EXECUTION, priority=11)
signal.connect(self.insert_stop_marker, signal.AFTER_WORKLOAD_EXECUTION, priority=11)
except DeviceError as e:
raise InstrumentError('Could not configure GPIO on device: {}'.format(e))
def setup(self, context):
self.logger.debug('Initialising session.')
self._execute_command('configure', config=self.device_config)
def slow_start(self, context):
self.logger.debug('Starting collecting measurements.')
self._execute_command('start')
def slow_stop(self, context):
self.logger.debug('Stopping collecting measurements.')
self._execute_command('stop')
def update_result(self, context): # pylint: disable=R0914
self.logger.debug('Downloading data files.')
output_directory = _d(os.path.join(context.output_directory, 'daq'))
self._execute_command('get_data', output_directory=output_directory)
for entry in os.listdir(output_directory):
context.add_iteration_artifact('DAQ_{}'.format(os.path.splitext(entry)[0]),
path=os.path.join('daq', entry),
kind='data',
description='DAQ power measurments.')
port = os.path.splitext(entry)[0]
path = os.path.join(output_directory, entry)
key = (context.spec.id, context.spec.label, context.current_iteration)
if key not in self._results:
self._results[key] = {}
temp_file = os.path.join(tempfile.gettempdir(), entry)
writer, wfh = None, None
with open(path) as fh:
if self.negative_samples != 'keep':
wfh = open(temp_file, 'wb')
writer = csv.writer(wfh)
reader = csv.reader(fh)
metrics = reader.next()
if writer:
writer.writerow(metrics)
self._metrics |= set(metrics)
rows = _get_rows(reader, writer, self.negative_samples)
#data = [map(float, d) for d in zip(*rows)]
data = zip(*rows)
if writer:
wfh.close()
shutil.move(temp_file, os.path.join(output_directory, entry))
n = len(data[0])
means = [s / n for s in map(sum, data)]
for metric, value in zip(metrics, means):
metric_name = '{}_{}'.format(port, metric)
context.result.add_metric(metric_name, round(value, 3), UNITS[metric])
self._results[key][metric_name] = round(value, 3)
energy = sum(data[metrics.index('power')]) * (self.sampling_rate / 1000000)
context.result.add_metric('{}_energy'.format(port), round(energy, 3), UNITS['energy'])
def teardown(self, context):
self.logger.debug('Terminating session.')
self._execute_command('close')
def finalize(self, context):
if self.gpio_path:
unexport_path = self.device.path.join(GPIO_ROOT, 'unexport')
self.device.set_sysfile_value(unexport_path, self.gpio_sync, verify=False)
def validate(self):
if not daq:
raise ImportError(import_error_mesg)
self._results = None
self._metrics = set()
if self.labels:
if not (len(self.labels) == len(self.resistor_values)): # pylint: disable=superfluous-parens
raise ConfigError('Number of DAQ port labels does not match the number of resistor values.')
else:
self.labels = ['PORT_{}'.format(i) for i, _ in enumerate(self.resistor_values)]
self.server_config = ServerConfiguration(host=self.server_host,
port=self.server_port)
self.device_config = DeviceConfiguration(device_id=self.device_id,
v_range=self.v_range,
dv_range=self.dv_range,
sampling_rate=self.sampling_rate,
resistor_values=self.resistor_values,
channel_map=self.channel_map,
labels=self.labels)
try:
self.server_config.validate()
self.device_config.validate()
except ConfigurationError, ex:
raise ConfigError('DAQ configuration: ' + ex.message) # Re-raise as a WA error
class Daq(Instrument):
name = 'daq'
description = """
DAQ instrument obtains the power consumption of the target device's core
measured by National Instruments Data Acquisition(DAQ) device.
WA communicates with a DAQ device server running on a Windows machine
(Please refer to :ref:`daq_setup`) over a network. You must specify the IP
address and port the server is listening on in the config file as follows ::
daq_server_host = '10.1.197.176'
daq_server_port = 45677
These values will be output by the server when you run it on Windows.
You must also specify the values of resistors (in Ohms) across which the
voltages are measured (Please refer to :ref:`daq_setup`). The values should be
specified as a list with an entry for each resistor, e.g.::
daq_resistor_values = [0.005, 0.005]
In addition to this mandatory configuration, you can also optionally specify the
following::
:daq_labels: Labels to be used for ports. Defaults to ``'PORT_<pnum>'``, where
'pnum' is the number of the port.
:daq_device_id: The ID under which the DAQ is registered with the driver.
Defaults to ``'Dev1'``.
:daq_v_range: Specifies the voltage range for the SOC voltage channel on the DAQ
(please refer to :ref:`daq_setup` for details). Defaults to ``2.5``.
:daq_dv_range: Specifies the voltage range for the resistor voltage channel on
the DAQ (please refer to :ref:`daq_setup` for details).
Defaults to ``0.2``.
:daq_sampling_rate: DAQ sampling rate. DAQ will take this many samples each
second. Please note that this maybe limitted by your DAQ model
and then number of ports you're measuring (again, see
:ref:`daq_setup`). Defaults to ``10000``.
:daq_channel_map: Represents mapping from logical AI channel number to physical
connector on the DAQ (varies between DAQ models). The default
assumes DAQ 6363 and similar with AI channels on connectors
0-7 and 16-23.
"""
parameters = [
Parameter('server_host', kind=str, default='localhost',
description='The host address of the machine that runs the daq Server which the '
'insturment communicates with.'),
Parameter('server_port', kind=int, default=56788,
description='The port number for daq Server in which daq insturment communicates '
'with.'),
Parameter('device_id', kind=str, default='Dev1',
description='The ID under which the DAQ is registered with the driver.'),
Parameter('v_range', kind=float, default=2.5,
description='Specifies the voltage range for the SOC voltage channel on the DAQ '
'(please refer to :ref:`daq_setup` for details).'),
Parameter('dv_range', kind=float, default=0.2,
description='Specifies the voltage range for the resistor voltage channel on '
'the DAQ (please refer to :ref:`daq_setup` for details).'),
Parameter('sampling_rate', kind=int, default=10000,
description='DAQ sampling rate. DAQ will take this many samples each '
'second. Please note that this maybe limitted by your DAQ model '
'and then number of ports you\'re measuring (again, see '
':ref:`daq_setup`)'),
Parameter('resistor_values', kind=list, mandatory=True,
description='The values of resistors (in Ohms) across which the voltages are measured on '
'each port.'),
Parameter('channel_map', kind=list_of_ints, default=(0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 23),
description='Represents mapping from logical AI channel number to physical '
'connector on the DAQ (varies between DAQ models). The default '
'assumes DAQ 6363 and similar with AI channels on connectors '
'0-7 and 16-23.'),
Parameter('labels', kind=list_of_strs,
description='List of port labels. If specified, the lenght of the list must match '
'the length of ``resistor_values``. Defaults to "PORT_<pnum>", where '
'"pnum" is the number of the port.')
]
def initialize(self, context):
devices = self._execute_command('list_devices')
if not devices:
raise InstrumentError('DAQ: server did not report any devices registered with the driver.')
self._results = OrderedDict()
def setup(self, context):
self.logger.debug('Initialising session.')
self._execute_command('configure', config=self.device_config)
def slow_start(self, context):
self.logger.debug('Starting collecting measurements.')
self._execute_command('start')
def slow_stop(self, context):
self.logger.debug('Stopping collecting measurements.')
self._execute_command('stop')
def update_result(self, context): # pylint: disable=R0914
self.logger.debug('Downloading data files.')
output_directory = _d(os.path.join(context.output_directory, 'daq'))
self._execute_command('get_data', output_directory=output_directory)
for entry in os.listdir(output_directory):
context.add_iteration_artifact('DAQ_{}'.format(os.path.splitext(entry)[0]),
path=os.path.join('daq', entry),
kind='data',
description='DAQ power measurments.')
port = os.path.splitext(entry)[0]
path = os.path.join(output_directory, entry)
key = (context.spec.id, context.workload.name, context.current_iteration)
if key not in self._results:
self._results[key] = {}
with open(path) as fh:
reader = csv.reader(fh)
metrics = reader.next()
data = [map(float, d) for d in zip(*list(reader))]
n = len(data[0])
means = [s / n for s in map(sum, data)]
for metric, value in zip(metrics, means):
metric_name = '{}_{}'.format(port, metric)
context.result.add_metric(metric_name, round(value, 3), UNITS[metric])
self._results[key][metric_name] = round(value, 3)
energy = sum(data[metrics.index('power')]) * (self.sampling_rate / 1000000)
context.result.add_metric('{}_energy'.format(port), round(energy, 3), UNITS['energy'])
def teardown(self, context):
self.logger.debug('Terminating session.')
self._execute_command('close')
def validate(self):
if not daq:
raise ImportError(import_error_mesg)
self._results = None
if self.labels:
if not (len(self.labels) == len(self.resistor_values)): # pylint: disable=superfluous-parens
raise ConfigError('Number of DAQ port labels does not match the number of resistor values.')
else:
self.labels = ['PORT_{}'.format(i) for i, _ in enumerate(self.resistor_values)]
self.server_config = ServerConfiguration(host=self.server_host,
port=self.server_port)
self.device_config = DeviceConfiguration(device_id=self.device_id,
v_range=self.v_range,
dv_range=self.dv_range,
sampling_rate=self.sampling_rate,
resistor_values=self.resistor_values,
channel_map=self.channel_map,
labels=self.labels)
try:
self.server_config.validate()
self.device_config.validate()
except ConfigurationError, ex:
raise ConfigError('DAQ configuration: ' + ex.message) # Re-raise as a WA error
class Daq(Instrument):
name = 'daq'
description = """
DAQ instrument obtains the power consumption of the target device's core
measured by National Instruments Data Acquisition(DAQ) device.
WA communicates with a DAQ device server running on a Windows machine
(Please refer to :ref:`daq_setup`) over a network. You must specify the IP
address and port the server is listening on in the config file as follows ::
daq_server_host = '10.1.197.176'
daq_server_port = 45677
These values will be output by the server when you run it on Windows.
You must also specify the values of resistors (in Ohms) across which the
voltages are measured (Please refer to :ref:`daq_setup`). The values should be
specified as a list with an entry for each resistor, e.g.::
daq_resistor_values = [0.005, 0.005]
In addition to this mandatory configuration, you can also optionally specify the
following::
:daq_labels: Labels to be used for ports. Defaults to ``'PORT_<pnum>'``, where
'pnum' is the number of the port.
:daq_device_id: The ID under which the DAQ is registered with the driver.
Defaults to ``'Dev1'``.
:daq_v_range: Specifies the voltage range for the SOC voltage channel on the DAQ
(please refer to :ref:`daq_setup` for details). Defaults to ``2.5``.
:daq_dv_range: Specifies the voltage range for the resistor voltage channel on
the DAQ (please refer to :ref:`daq_setup` for details).
Defaults to ``0.2``.
:daq_sampling_rate: DAQ sampling rate. DAQ will take this many samples each
second. Please note that this maybe limitted by your DAQ model
and then number of ports you're measuring (again, see
:ref:`daq_setup`). Defaults to ``10000``.
:daq_channel_map: Represents mapping from logical AI channel number to physical
connector on the DAQ (varies between DAQ models). The default
assumes DAQ 6363 and similar with AI channels on connectors
0-7 and 16-23.
"""
parameters = [
Parameter('server_host', kind=str, default='localhost',
global_alias='daq_server_host',
description='The host address of the machine that runs the daq Server which the '
'insturment communicates with.'),
Parameter('server_port', kind=int, default=45677,
global_alias='daq_server_port',
description='The port number for daq Server in which daq insturment communicates '
'with.'),
Parameter('device_id', kind=str, default='Dev1',
global_alias='daq_device_id',
description='The ID under which the DAQ is registered with the driver.'),
Parameter('v_range', kind=float, default=2.5,
global_alias='daq_v_range',
description='Specifies the voltage range for the SOC voltage channel on the DAQ '
'(please refer to :ref:`daq_setup` for details).'),
Parameter('dv_range', kind=float, default=0.2,
global_alias='daq_dv_range',
description='Specifies the voltage range for the resistor voltage channel on '
'the DAQ (please refer to :ref:`daq_setup` for details).'),
Parameter('sampling_rate', kind=int, default=10000,
global_alias='daq_sampling_rate',
description='DAQ sampling rate. DAQ will take this many samples each '
'second. Please note that this maybe limitted by your DAQ model '
'and then number of ports you\'re measuring (again, see '
':ref:`daq_setup`)'),
Parameter('resistor_values', kind=list, mandatory=True,
global_alias='daq_resistor_values',
description='The values of resistors (in Ohms) across which the voltages are measured on '
'each port.'),
Parameter('channel_map', kind=list_of_ints, default=(0, 1, 2, 3, 4, 5, 6, 7, 16, 17, 18, 19, 20, 21, 22, 23),
global_alias='daq_channel_map',
description='Represents mapping from logical AI channel number to physical '
'connector on the DAQ (varies between DAQ models). The default '
'assumes DAQ 6363 and similar with AI channels on connectors '
'0-7 and 16-23.'),
Parameter('labels', kind=list_of_strs,
global_alias='daq_labels',
description='List of port labels. If specified, the lenght of the list must match '
'the length of ``resistor_values``. Defaults to "PORT_<pnum>", where '
'"pnum" is the number of the port.'),
Parameter('negative_samples', default='keep', allowed_values=['keep', 'zero', 'drop', 'abs'],
global_alias='daq_negative_samples',
description="""
Specifies how negative power samples should be handled. The following
methods are possible:
:keep: keep them as they are
:zero: turn negative values to zero
:drop: drop samples if they contain negative values. *warning:* this may result in
port files containing different numbers of samples
:abs: take the absoulte value of negave samples
"""),
Parameter('gpio_sync', kind=int, constraint=lambda x: x > 0,
description="""
If specified, the instrument will simultaneously set the
specified GPIO pin high and put a marker into ftrace. This is
to facillitate syncing kernel trace events to DAQ power
trace.
"""),
Parameter('merge_channels', kind=dict_or_bool, default=False,
description="""
If set to ``True``, channels with consecutive letter suffixes will be summed.
e.g. If you have channels A7a, A7b, A7c, A15a, A15b they will be summed to A7, A15
You can also manually specify the name of channels to be merged and the name of the
result like so:
merge_channels:
A15: [A15dvfs, A15ram]
NonCPU: [GPU, RoS, Mem]
In the above exaples the DAQ channels labeled A15a and A15b will be summed together
with the results being saved as 'channel' ''a''. A7, GPU and RoS will be summed to 'c'
""")
]
def initialize(self, context):
status, devices = self._execute_command('list_devices')
if status == daq.Status.OK and not devices:
raise InstrumentError('DAQ: server did not report any devices registered with the driver.')
self._results = OrderedDict()
self.gpio_path = None
if self.gpio_sync:
if not self.device.file_exists(GPIO_ROOT):
raise InstrumentError('GPIO sysfs not enabled on the device.')
try:
export_path = self.device.path.join(GPIO_ROOT, 'export')
self.device.set_sysfile_value(export_path, self.gpio_sync, verify=False)
pin_root = self.device.path.join(GPIO_ROOT, 'gpio{}'.format(self.gpio_sync))
direction_path = self.device.path.join(pin_root, 'direction')
self.device.set_sysfile_value(direction_path, 'out')
self.gpio_path = self.device.path.join(pin_root, 'value')
self.device.set_sysfile_value(self.gpio_path, 0, verify=False)
signal.connect(self.insert_start_marker, signal.BEFORE_WORKLOAD_EXECUTION, priority=11)
signal.connect(self.insert_stop_marker, signal.AFTER_WORKLOAD_EXECUTION, priority=11)
except DeviceError as e:
raise InstrumentError('Could not configure GPIO on device: {}'.format(e))
def setup(self, context):
self.logger.debug('Initialising session.')
self._execute_command('configure', config=self.device_config)
def slow_start(self, context):
self.logger.debug('Starting collecting measurements.')
self._execute_command('start')
def slow_stop(self, context):
self.logger.debug('Stopping collecting measurements.')
self._execute_command('stop')
def update_result(self, context): # pylint: disable=R0914
self.logger.debug('Downloading data files.')
output_directory = _d(os.path.join(context.output_directory, 'daq'))
self._execute_command('get_data', output_directory=output_directory)
if self.merge_channels:
self._merge_channels(context)
for entry in os.listdir(output_directory):
context.add_iteration_artifact('DAQ_{}'.format(os.path.splitext(entry)[0]),
path=os.path.join('daq', entry),
kind='data',
description='DAQ power measurments.')
port = os.path.splitext(entry)[0]
path = os.path.join(output_directory, entry)
key = (context.spec.id, context.spec.label, context.current_iteration)
if key not in self._results:
self._results[key] = {}
temp_file = os.path.join(tempfile.gettempdir(), entry)
writer, wfh = None, None
with open(path) as fh:
if self.negative_samples != 'keep':
wfh = open(temp_file, 'wb')
writer = csv.writer(wfh)
reader = csv.reader(fh)
metrics = reader.next()
if writer:
writer.writerow(metrics)
self._metrics |= set(metrics)
rows = _get_rows(reader, writer, self.negative_samples)
data = zip(*rows)
if writer:
wfh.close()
shutil.move(temp_file, os.path.join(output_directory, entry))
n = len(data[0])
means = [s / n for s in map(sum, data)]
for metric, value in zip(metrics, means):
metric_name = '{}_{}'.format(port, metric)
context.result.add_metric(metric_name, round(value, 3), UNITS[metric])
self._results[key][metric_name] = round(value, 3)
energy = sum(data[metrics.index('power')]) * (self.sampling_rate / 1000000)
context.result.add_metric('{}_energy'.format(port), round(energy, 3), UNITS['energy'])
def teardown(self, context):
self.logger.debug('Terminating session.')
self._execute_command('close')
def finalize(self, context):
if self.gpio_path:
unexport_path = self.device.path.join(GPIO_ROOT, 'unexport')
self.device.set_sysfile_value(unexport_path, self.gpio_sync, verify=False)
def validate(self): # pylint: disable=too-many-branches
if not daq:
raise ImportError(import_error_mesg)
self._results = None
self._metrics = set()
if self.labels:
if len(self.labels) != len(self.resistor_values):
raise ConfigError('Number of DAQ port labels does not match the number of resistor values.')
duplicates = set([x for x in self.labels if self.labels.count(x) > 1])
if len(duplicates) > 0:
raise ConfigError('Duplicate labels: {}'.format(', '.join(duplicates)))
else:
self.labels = ['PORT_{}'.format(i) for i, _ in enumerate(self.resistor_values)]
self.server_config = ServerConfiguration(host=self.server_host,
port=self.server_port)
self.device_config = DeviceConfiguration(device_id=self.device_id,
v_range=self.v_range,
dv_range=self.dv_range,
sampling_rate=self.sampling_rate,
resistor_values=self.resistor_values,
channel_map=self.channel_map,
labels=self.labels)
try:
self.server_config.validate()
self.device_config.validate()
except ConfigurationError, ex:
raise ConfigError('DAQ configuration: ' + ex.message) # Re-raise as a WA error
self.grouped_suffixes = defaultdict(str)
if isinstance(self.merge_channels, bool):
if self.merge_channels:
# Create a dict of potential prefixes and a list of their suffixes
grouped_suffixes = defaultdict(list)
for label in sorted(self.labels):
if len(label) > 1:
grouped_suffixes[label[:-1]].append(label)
# Only merge channels if more than one channel has the same prefix and the prefixes
# are consecutive letters starting with 'a'.
self.label_map = {}
for channel, suffixes in grouped_suffixes.iteritems():
if len(suffixes) > 1:
if "".join([s[-1] for s in suffixes]) in ascii_lowercase[:len(suffixes)]:
self.label_map[channel] = suffixes
elif isinstance(self.merge_channels, dict):
# Check if given channel names match labels
for old_names in self.merge_channels.values():
for name in old_names:
if name not in self.labels:
raise ConfigError("No channel with label {} specified".format(name))
self.label_map = self.merge_channels # pylint: disable=redefined-variable-type
self.merge_channels = True
else: # Should never reach here
raise AssertionError("``merge_channels`` is of invalid type")
