BioBrain

Asks whether the FlyWire wiring of 139,255 neurons can seed a sparse, event-driven, trainable spiking network that costs far fewer synaptic operations than a fair baseline, and says up front that it does not assume the answer is yes. The finished milestone is mostly a negative one. In Python and NumPy on a CPU, event-driven execution beats time-step only at extreme sparsity: up to 6.6x at 100 neurons, 1.2x at 10,000 and never at 50,000. Compiled with Numba it is still about 2x slower than compiled time-step at realistic activity.

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#event-driven#lif#numba#benchmark#negative-result#flywire