Science1 hOctober 19, 2026, 04:12

fly.ai runs a bit-exact fruit-fly brain simulation on any GPU

fly.ai simulates the full central nervous system of an adult male fruit fly (MaleCNS v1.0: 166,700 neurons and 25.6 million connections) using integer fixed-point math so results match bit for bit on NVIDIA, AMD and CPU. The MIT-licensed code runs in a browser via WebGPU.

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fly.ai runs a bit-exact fruit-fly brain simulation on any GPU

Model: 166,700 neurons and 25.6 million connections of leaky integrate-and-fire type
Q16/Q20 integer math with 32-bit wraparound removes summation-order dependence
Validation: population rates match the float engine within about 0.004 Hz
WebGPU engine runs up to 32 jobs at once in the browser

#Fly.ai#WebGPU

fly.ai runs a bit-exact fruit-fly brain simulation on any GPU

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