def test_get_max_synapses():
unittest_setup()
spynnaker8.setup()
d = SynapseDynamicsSTDP(timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceAdditive(),
pad_to_length=258)
assert d.get_max_synapses(256) <= 256
def __init__(self,
stdp_model=CommonSP.default_parameters['stdp_model'],
f_rew=CommonSP.default_parameters['f_rew'],
weight=CommonSP.default_parameters['weight'],
delay=CommonSP.default_parameters['delay'],
s_max=CommonSP.default_parameters['s_max'],
sigma_form_forward=CommonSP.
default_parameters['sigma_form_forward'],
sigma_form_lateral=CommonSP.
default_parameters['sigma_form_lateral'],
p_form_forward=CommonSP.default_parameters['p_form_forward'],
p_form_lateral=CommonSP.default_parameters['p_form_lateral'],
p_elim_dep=CommonSP.default_parameters['p_elim_dep'],
p_elim_pot=CommonSP.default_parameters['p_elim_pot'],
grid=CommonSP.default_parameters['grid'],
lateral_inhibition=CommonSP.
default_parameters['lateral_inhibition'],
random_partner=CommonSP.default_parameters['random_partner'],
seed=None):
if (stdp_model is not None
and not isinstance(stdp_model, SynapseDynamicsSTDP)):
raise TypeError("Using wrong StructuralMechanism. "
"You should be using StructuralMechanismStatic. ")
SynapseDynamicsSTDP.__init__(self,
stdp_model.timing_dependence,
stdp_model.weight_dependence,
None,
stdp_model.dendritic_delay_fraction,
pad_to_length=s_max)
AbstractSynapseDynamicsStructural.__init__(self)
self._common_sp = CommonSP(stdp_model=self,
f_rew=f_rew,
weight=weight,
delay=delay,
s_max=s_max,
sigma_form_forward=sigma_form_forward,
sigma_form_lateral=sigma_form_lateral,
p_form_forward=p_form_forward,
p_form_lateral=p_form_lateral,
p_elim_dep=p_elim_dep,
p_elim_pot=p_elim_pot,
grid=grid,
lateral_inhibition=lateral_inhibition,
random_partner=random_partner,
seed=seed)
import pytest
@pytest.mark.parametrize(
"dynamics,size,exception,max_size",
[
# Normal static rows can be up to 255 words, 1 word per synapse
(SynapseDynamicsStatic(), 512, SynapseRowTooBigException, 255),
# Normal static row of 20 is allowed - 20 words = 80 bytes
(SynapseDynamicsStatic(), 20, None, 80),
# STDP row with spike pair rule is 1 words per synapse but extra
# header takes some of the space, so only 252 synapses allowed
(SynapseDynamicsSTDP(
TimingDependenceSpikePair(),
WeightDependenceAdditive()), 512, SynapseRowTooBigException, 252),
# STDP row with spike pair rule of 20 is allowed - 20 words = 80 bytes
(SynapseDynamicsSTDP(TimingDependenceSpikePair(),
WeightDependenceAdditive()), 20, None, 80)
])
def test_get_max_row_bytes(dynamics, size, exception, max_size):
io = SynapseIORowBased()
population_table = MasterPopTableAsBinarySearch()
synapse_information = SynapseInformation(None, dynamics, 0)
in_edge = ProjectionApplicationEdge(None, None, synapse_information)
if exception is not None:
with pytest.raises(exception) as exc_info:
io._get_max_row_bytes(size, dynamics, population_table, in_edge,
size)
def test_set_synapse_dynamics(self):
MockSimulator.setup()
default_config_paths = os.path.join(
os.path.dirname(abstract_spinnaker_common.__file__),
AbstractSpiNNakerCommon.CONFIG_FILE_NAME)
config = conf_loader.load_config(
AbstractSpiNNakerCommon.CONFIG_FILE_NAME, default_config_paths)
synaptic_manager = SynapticManager(
n_synapse_types=2, ring_buffer_sigma=5.0,
spikes_per_second=100.0, config=config)
static = SynapseDynamicsStatic()
stdp = SynapseDynamicsSTDP(
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceAdditive())
alt_stdp = SynapseDynamicsSTDP(
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceMultiplicative())
static_struct = SynapseDynamicsStructuralStatic(
partner_selection=LastNeuronSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5))
alt_static_struct = SynapseDynamicsStructuralStatic(
partner_selection=RandomSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5))
stdp_struct = SynapseDynamicsStructuralSTDP(
partner_selection=LastNeuronSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5),
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceAdditive())
alt_stdp_struct = SynapseDynamicsStructuralSTDP(
partner_selection=RandomSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5),
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceAdditive())
alt_stdp_struct_2 = SynapseDynamicsStructuralSTDP(
partner_selection=LastNeuronSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5),
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceMultiplicative())
# This should be fine as it is the first call
synaptic_manager.synapse_dynamics = static
# This should be fine as STDP overrides static
synaptic_manager.synapse_dynamics = stdp
# This should fail because STDP dependences are difference
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp
# This should work because STDP dependences are the same
synaptic_manager.synapse_dynamics = stdp
# This should work because static always works, but the type should
# still be STDP
synaptic_manager.synapse_dynamics = static
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsSTDP)
# This should work but should merge with the STDP rule
synaptic_manager.synapse_dynamics = static_struct
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralSTDP)
# These should work as static / the STDP is the same but neither should
# change anything
synaptic_manager.synapse_dynamics = static
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralSTDP)
synaptic_manager.synapse_dynamics = stdp
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralSTDP)
synaptic_manager.synapse_dynamics = static_struct
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralSTDP)
# These should fail as things are different
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_static_struct
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp
# This should pass as same structural STDP
synaptic_manager.synapse_dynamics = stdp_struct
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralSTDP)
# These should fail as both different
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp_struct
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp_struct_2
# Try starting again to get a couple more combinations
synaptic_manager = SynapticManager(
n_synapse_types=2, ring_buffer_sigma=5.0,
spikes_per_second=100.0, config=config)
# STDP followed by structural STDP should result in Structural STDP
synaptic_manager.synapse_dynamics = stdp
synaptic_manager.synapse_dynamics = stdp_struct
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralSTDP)
# ... and should fail here because of differences
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_static_struct
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp_struct
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp_struct_2
# One more time!
synaptic_manager = SynapticManager(
n_synapse_types=2, ring_buffer_sigma=5.0,
spikes_per_second=100.0, config=config)
# Static followed by static structural should result in static
# structural
synaptic_manager.synapse_dynamics = static
synaptic_manager.synapse_dynamics = static_struct
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralStatic)
# ... and should fail here because of differences
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_static_struct
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp_struct
# This should be fine
synaptic_manager.synapse_dynamics = static
# This should be OK, but should merge with STDP (opposite of above)
synaptic_manager.synapse_dynamics = stdp
self.assertIsInstance(
synaptic_manager.synapse_dynamics, SynapseDynamicsStructuralSTDP)
# ... and now these should fail
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_static_struct
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp_struct
with self.assertRaises(SynapticConfigurationException):
synaptic_manager.synapse_dynamics = alt_stdp_struct_2
# OK, just one more, honest
synaptic_manager = SynapticManager(
n_synapse_types=2, ring_buffer_sigma=5.0,
spikes_per_second=100.0, config=config)
synaptic_manager.synapse_dynamics = static_struct
synaptic_manager.synapse_dynamics = stdp_struct
def test_set_synapse_dynamics():
unittest_setup()
p.setup(1.0)
post_app_model = IFCurrExpBase()
post_app_vertex = post_app_model.create_vertex(
n_neurons=10,
label="post",
constraints=None,
spikes_per_second=None,
ring_buffer_sigma=None,
incoming_spike_buffer_size=None,
n_steps_per_timestep=1,
drop_late_spikes=True,
splitter=None)
static = SynapseDynamicsStatic()
stdp = SynapseDynamicsSTDP(timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceAdditive())
alt_stdp = SynapseDynamicsSTDP(
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceMultiplicative())
static_struct = SynapseDynamicsStructuralStatic(
partner_selection=LastNeuronSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5))
alt_static_struct = SynapseDynamicsStructuralStatic(
partner_selection=RandomSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5))
stdp_struct = SynapseDynamicsStructuralSTDP(
partner_selection=LastNeuronSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5),
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceAdditive())
alt_stdp_struct = SynapseDynamicsStructuralSTDP(
partner_selection=RandomSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5),
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceAdditive())
alt_stdp_struct_2 = SynapseDynamicsStructuralSTDP(
partner_selection=LastNeuronSelection(),
formation=DistanceDependentFormation(),
elimination=RandomByWeightElimination(0.5),
timing_dependence=TimingDependenceSpikePair(),
weight_dependence=WeightDependenceMultiplicative())
neuromodulation = SynapseDynamicsNeuromodulation()
alt_neuromodulation = SynapseDynamicsNeuromodulation(tau_c=1)
# This should be fine as it is the first call
post_app_vertex.synapse_dynamics = static
# This should fail as can't add neuromodulation first
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = neuromodulation
# This should be fine as STDP overrides static
post_app_vertex.synapse_dynamics = stdp
# This should fail because STDP dependences are difference
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp
# This should pass because neuromodulation is OK after STDP
post_app_vertex.synapse_dynamics = neuromodulation
assert isinstance(post_app_vertex.synapse_dynamics, SynapseDynamicsSTDP)
# This should work because STDP dependences are the same
post_app_vertex.synapse_dynamics = stdp
# This should fail as neuromodulation type is different
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_neuromodulation
# This should be fine as same neuromodulation
post_app_vertex.synapse_dynamics = neuromodulation
assert isinstance(post_app_vertex.synapse_dynamics, SynapseDynamicsSTDP)
# This should work because static always works, but the type should
# still be STDP
post_app_vertex.synapse_dynamics = static
assert isinstance(post_app_vertex.synapse_dynamics, SynapseDynamicsSTDP)
# This should work but should merge with the STDP rule
post_app_vertex.synapse_dynamics = static_struct
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralSTDP)
# These should work as static / the STDP is the same but neither should
# change anything
post_app_vertex.synapse_dynamics = static
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralSTDP)
post_app_vertex.synapse_dynamics = stdp
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralSTDP)
post_app_vertex.synapse_dynamics = static_struct
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralSTDP)
# These should fail as things are different
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_static_struct
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp
# This should pass as same structural STDP
post_app_vertex.synapse_dynamics = stdp_struct
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralSTDP)
# These should fail as both different
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp_struct
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp_struct_2
# Try starting again to get a couple more combinations
post_app_vertex = post_app_model.create_vertex(
n_neurons=10,
label="post",
constraints=None,
spikes_per_second=None,
ring_buffer_sigma=None,
incoming_spike_buffer_size=None,
n_steps_per_timestep=1,
drop_late_spikes=True,
splitter=None)
# STDP followed by structural STDP should result in Structural STDP
post_app_vertex.synapse_dynamics = stdp
post_app_vertex.synapse_dynamics = stdp_struct
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralSTDP)
# ... and should fail here because of differences
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_static_struct
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp_struct
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp_struct_2
# One more time!
post_app_vertex = post_app_model.create_vertex(
n_neurons=10,
label="post",
constraints=None,
spikes_per_second=None,
ring_buffer_sigma=None,
incoming_spike_buffer_size=None,
n_steps_per_timestep=1,
drop_late_spikes=True,
splitter=None)
# Static followed by static structural should result in static
# structural
post_app_vertex.synapse_dynamics = static
post_app_vertex.synapse_dynamics = static_struct
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralStatic)
# ... and should fail here because of differences
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_static_struct
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp_struct
# This should be fine
post_app_vertex.synapse_dynamics = static
# This should be OK, but should merge with STDP (opposite of above)
post_app_vertex.synapse_dynamics = stdp
assert isinstance(post_app_vertex.synapse_dynamics,
SynapseDynamicsStructuralSTDP)
# ... and now these should fail
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_static_struct
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp_struct
with pytest.raises(SynapticConfigurationException):
post_app_vertex.synapse_dynamics = alt_stdp_struct_2
# OK, just one more, honest
post_app_vertex = post_app_model.create_vertex(
n_neurons=10,
label="post",
constraints=None,
spikes_per_second=None,
ring_buffer_sigma=None,
incoming_spike_buffer_size=None,
n_steps_per_timestep=1,
drop_late_spikes=True,
splitter=None)
post_app_vertex.synapse_dynamics = static_struct
post_app_vertex.synapse_dynamics = stdp_struct