nbodyssey

live · webgpu · all-pairs gravity

Observation run

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bodies 8k 16k 32k 64k

steps per frame 1 2 4

impact parameter tilt of disk B approach speed

view

01 / Approach

Two disk galaxies fall toward each other.

Your GPU is running the all-pairs kernel. The CUDA engine adds a Barnes-Hut tree: 1,000,000 bodies in 30 ms a step on a Tesla T4, 176× faster than all-pairs.

Recorded run: two disk galaxies collide and throw out tidal tails

This browser can't run WebGPU, so here is a recorded run from the CUDA engine instead. Open the page in a recent Chrome, Edge or Safari to run it live on your own GPU.