sim.StructuralMechanismStatic vs sim.reset

[Christian-B]

to replicate:

import pyNN.spiNNaker as sim
sim.setup(1.0)
stim = sim.Population(9, sim.SpikeSourceArray(range(10)), label="stim")

pop = sim.Population(9, sim.IF_curr_exp(), label="pop_1")

sim.Projection(
stim, pop, sim.AllToAllConnector(),
sim.StructuralMechanismStatic(
partner_selection=sim.RandomSelection(),
formation=sim.DistanceDependentFormation([3, 3], 0.0),
elimination=sim.RandomByWeightElimination(4.0, 1.0, 1.0),
f_rew=1000, initial_weight=4.0, initial_delay=3.0,
s_max=9, seed=0, weight=0.0, delay=1.0))

sim.run(10)
sim.reset()
sim.run(10)

Error
spinn_front_end_common/interface/interface_functions/graph_data_specification_writer.py", line 132, in __generate_data_spec_for_vertices
vertex.generate_data_specification(spec, pl)
spynnaker/pyNN/models/neuron/population_synapses_machine_vertex_lead.py", line 105, in generate_data_specification
self._write_synapse_data_spec(
spynnaker/pyNN/models/neuron/population_machine_synapses.py", line 160, in _write_synapse_data_spec
synapse_dynamics.write_structural_parameters(
spynnaker/pyNN/models/neuron/synapse_dynamics/synapse_dynamics_structural_common.py", line 111, in write_structural_parameters
self.__write_post_to_pre_table(
spynnaker/pyNN/models/neuron/synapse_dynamics/synapse_dynamics_structural_common.py", line 332, in __write_post_to_pre_table
raise Exception("Too many initial connections per incoming neuron")

[Christian-B]

Fails even with a hard reset:
Forced by)
pop = sim.Population(9, sim.IF_curr_exp(), label="pop_2")
before the second run.