Source code for spynnaker.pyNN.models.spike_source.spike_source_poisson
# Copyright (c) 2017-2019 The University of Manchester
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from .spike_source_poisson_vertex import SpikeSourcePoissonVertex
from spynnaker.pyNN.models.abstract_pynn_model import AbstractPyNNModel
from spinn_utilities.overrides import overrides
_population_parameters = {"seed": None, "max_rate": None}
# Technically, this is ~2900 in terms of DTCM, but is timescale dependent
# in terms of CPU (2900 at 10 times slow down is fine, but not at
# real-time)
DEFAULT_MAX_ATOMS_PER_CORE = 500
[docs]class SpikeSourcePoisson(AbstractPyNNModel):
__slots__ = ["__duration", "__rate", "__start"]
default_population_parameters = _population_parameters
def __init__(self, rate=1.0, start=0, duration=None):
self.__start = start
self.__duration = duration
self.__rate = rate
[docs] @classmethod
def set_model_max_atoms_per_core(cls, n_atoms=DEFAULT_MAX_ATOMS_PER_CORE):
super(SpikeSourcePoisson, cls).set_model_max_atoms_per_core(
n_atoms)
[docs] @classmethod
def get_max_atoms_per_core(cls):
if cls not in super(SpikeSourcePoisson, cls)._max_atoms_per_core:
return DEFAULT_MAX_ATOMS_PER_CORE
return super(SpikeSourcePoisson, cls).get_max_atoms_per_core()
[docs] @overrides(AbstractPyNNModel.create_vertex, additional_arguments=[
"seed", "max_rate"])
def create_vertex(self, n_neurons, label, constraints, seed, max_rate):
# pylint: disable=arguments-differ
max_atoms = self.get_max_atoms_per_core()
return SpikeSourcePoissonVertex(
n_neurons, constraints, label, seed, max_atoms, self,
rate=self.__rate, start=self.__start, duration=self.__duration,
max_rate=max_rate)