nengo_dl builders for Loihi neurons

nengo / nengo-loihi

Run Nengo models on Intel's Loihi chip

https://www.nengo.ai/nengo-loihi/

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nengo_dl builders for Loihi neurons #140

Closed hunse closed 5 years ago

hunse commented 5 years ago

This adds nengo_dl TensorFlow builders for the LoihiLIF and LoihiSpikingRectifiedLinear neuron types. This allows nengo_dl networks to train with tuning curves like those of the chip neurons, allowing for more accurate conversion of ANNs for the chip.

Based off #133

hunse commented 5 years ago

[x] Enforce same noise model for all grouped neuron operators, or group them only if they share a noise model

hunse commented 5 years ago

A number of tests have started failing for weird reasons. test_learning.test_multiple_pes fails sporadically; hopefully with #151 it will be more predictable.

There's also failing for the static and docs tests, because of weird problems with the setup for CI. Not sure if it's because something changed with packages in pip, or how the Travis servers are initialized, or what.

hunse commented 5 years ago

Also, the codecov is bad because the new tests are importorskip('nengo_dl'), and it appears they're not getting run. But nengo_dl should be installed for the tests, I thought. I think it might have to do with the version (I might be using some newer nengo_dl features).

hunse commented 5 years ago

All LGTM now!

hunse commented 5 years ago

Other than those two coverage points, the changes look good to me.