def before_run(self, run_namespace=None, level=0):
'''
before_run(namespace)
Prepares the `Network` for a run.
Objects in the `Network` are sorted into the correct running order, and
their `BrianObject.before_run` methods are called.
Parameters
----------
namespace : dict-like, optional
A namespace in which objects which do not define their own
namespace will be run.
'''
# A garbage collection here can be useful to free memory if we have
# multiple runs
gc.collect()
prefs.check_all_validated()
self._stopped = False
Network._globally_stopped = False
self._sort_objects()
logger.debug("Preparing network {self.name} with {numobj} "
"objects: {objnames}".format(self=self,
numobj=len(self.objects),
objnames=', '.join(obj.name for obj in self.objects)),
"before_run")
self.check_dependencies()
for obj in self.objects:
if obj.active:
try:
obj.before_run(run_namespace, level=level+2)
except DimensionMismatchError as ex:
raise DimensionMismatchError(('An error occured preparing '
'object "%s":\n%s') % (obj.name,
ex.desc),
*ex.dims)
# Check that no object has been run as part of another network before
for obj in self.objects:
if obj._network is None:
obj._network = self.id
elif obj._network != self.id:
raise RuntimeError(('%s has already been run in the '
'context of another network. Use '
'add/remove to change the objects '
'in a simulated network instead of '
'creating a new one.') % obj.name)
logger.debug("Network {self.name} has {num} "
"clocks: {clocknames}".format(self=self,
num=len(self._clocks),
clocknames=', '.join(obj.name for obj in self._clocks)),
"before_run")
def before_run(self, run_namespace=None, level=0):
'''
before_run(namespace)
Prepares the `Network` for a run.
Objects in the `Network` are sorted into the correct running order, and
their `BrianObject.before_run` methods are called.
Parameters
----------
namespace : dict-like, optional
A namespace in which objects which do not define their own
namespace will be run.
'''
from brian2.devices.device import get_device, all_devices
prefs.check_all_validated()
# Check names in the network for uniqueness
names = [obj.name for obj in self.objects]
non_unique_names = [name for name, count in Counter(names).iteritems()
if count > 1]
if len(non_unique_names):
formatted_names = ', '.join("'%s'" % name
for name in non_unique_names)
raise ValueError('All objects in a network need to have unique '
'names, the following name(s) were used more than '
'once: %s' % formatted_names)
self._stopped = False
Network._globally_stopped = False
device = get_device()
if device.network_schedule is not None:
# The device defines a fixed network schedule
if device.network_schedule != self.schedule:
# TODO: The human-readable name of a device should be easier to get
device_name = all_devices.keys()[all_devices.values().index(device)]
logger.warn(("The selected device '{device_name}' only "
"supports a fixed schedule, but this schedule is "
"not consistent with the network's schedule. The "
"simulation will use the device's schedule.\n"
"Device schedule: {device.network_schedule}\n"
"Network schedule: {net.schedule}\n"
"Set the network schedule explicitly or set the "
"core.network.default_schedule preference to "
"avoid this warning.").format(device_name=device_name,
device=device,
net=self),
name_suffix='schedule_conflict', once=True)
self._sort_objects()
logger.debug("Preparing network {self.name} with {numobj} "
"objects: {objnames}".format(self=self,
numobj=len(self.objects),
objnames=', '.join(obj.name for obj in self.objects)),
"before_run")
self.check_dependencies()
for obj in self.objects:
if obj.active:
try:
obj.before_run(run_namespace, level=level+2)
except DimensionMismatchError as ex:
raise DimensionMismatchError(('An error occured preparing '
'object "%s":\n%s') % (obj.name,
ex.desc),
*ex.dims)
# Check that no object has been run as part of another network before
for obj in self.objects:
if obj._network is None:
obj._network = self.id
elif obj._network != self.id:
raise RuntimeError(('%s has already been run in the '
'context of another network. Use '
'add/remove to change the objects '
'in a simulated network instead of '
'creating a new one.') % obj.name)
logger.debug("Network {self.name} has {num} "
"clocks: {clocknames}".format(self=self,
num=len(self._clocks),
clocknames=', '.join(obj.name for obj in self._clocks)),
"before_run")
def before_run(self, run_namespace=None, level=0):
'''
before_run(namespace)
Prepares the `Network` for a run.
Objects in the `Network` are sorted into the correct running order, and
their `BrianObject.before_run` methods are called.
Parameters
----------
namespace : dict-like, optional
A namespace in which objects which do not define their own
namespace will be run.
'''
from brian2.devices.device import get_device, all_devices
prefs.check_all_validated()
# Check names in the network for uniqueness
names = [obj.name for obj in self.objects]
non_unique_names = [
name for name, count in Counter(names).iteritems() if count > 1
]
if len(non_unique_names):
formatted_names = ', '.join("'%s'" % name
for name in non_unique_names)
raise ValueError(
'All objects in a network need to have unique '
'names, the following name(s) were used more than '
'once: %s' % formatted_names)
self._stopped = False
Network._globally_stopped = False
device = get_device()
if device.network_schedule is not None:
# The device defines a fixed network schedule
if device.network_schedule != self.schedule:
# TODO: The human-readable name of a device should be easier to get
device_name = all_devices.keys()[all_devices.values().index(
device)]
logger.warn(
("The selected device '{device_name}' only "
"supports a fixed schedule, but this schedule is "
"not consistent with the network's schedule. The "
"simulation will use the device's schedule.\n"
"Device schedule: {device.network_schedule}\n"
"Network schedule: {net.schedule}\n"
"Set the network schedule explicitly or set the "
"core.network.default_schedule preference to "
"avoid this warning.").format(device_name=device_name,
device=device,
net=self),
name_suffix='schedule_conflict',
once=True)
self._sort_objects()
logger.debug(
"Preparing network {self.name} with {numobj} "
"objects: {objnames}".format(
self=self,
numobj=len(self.objects),
objnames=', '.join(obj.name for obj in self.objects)),
"before_run")
self.check_dependencies()
for obj in self.objects:
if obj.active:
try:
obj.before_run(run_namespace, level=level + 2)
except DimensionMismatchError as ex:
raise DimensionMismatchError(
('An error occured preparing '
'object "%s":\n%s') % (obj.name, ex.desc), *ex.dims)
# Check that no object has been run as part of another network before
for obj in self.objects:
if obj._network is None:
obj._network = self.id
elif obj._network != self.id:
raise RuntimeError(('%s has already been run in the '
'context of another network. Use '
'add/remove to change the objects '
'in a simulated network instead of '
'creating a new one.') % obj.name)
logger.debug(
"Network {self.name} has {num} "
"clocks: {clocknames}".format(
self=self,
num=len(self._clocks),
clocknames=', '.join(obj.name for obj in self._clocks)),
"before_run")