Hi,

sorry to bother you all, I just don’t have an idea how to solve this problem.

When trying to build the model in Nengo Loihi, I get an assertion error when discretizing vth within a compartment (assert (man > 0).all() in nengo_loihi/builder/discretize.py", line 98, in vth_to_manexp)

My model is like this:

```
with nengo.Network() as self.network:
self.input_node = nengo.Node(size_out=2,output= np.cos)
self.spike_generators = nengo.Ensemble(n_neurons = p.resolution[0]*p.resolution[1], dimensions=2, neuron_type=nengo.SpikingRectifiedLinear(initial_state={"voltage":nengo.dists.Choice(np.array([0]))}))
self.neuron_postLeft = nengo.Ensemble(label="left motor neuron", n_neurons=1, dimensions=1, neuron_type=nengo.LIF(initial_state={"voltage":nengo.dists.Choice(np.array([0]))}))
self.neuron_postRight = nengo.Ensemble(label="right motor neuron", n_neurons=1, dimensions=1, neuron_type=nengo.LIF(initial_state={"voltage":nengo.dists.Choice(np.array([0]))}))
self.conn_l = nengo.Connection(self.spike_generators.neurons, self.neuron_postLeft.neurons,transform=self.w_l)
self.conn_r = nengo.Connection(self.spike_generators.neurons, self.neuron_postRight.neurons,transform=self.w_r)
self.input_conn = nengo.Connection(self.input_node, self.spike_generators)
self.spike_detectorLeft = nengo.Probe(self.neuron_postLeft.neurons)
self.spike_detectorRight = nengo.Probe(self.neuron_postRight.neurons)
```

It has something to do with the self.conn_l and self.conn_r (they have a pre-set weight) since after removing those the assertion error goes away, but I don’t know in what way the “vth” value depends on that.

Thanks for the help in advance.