VRChat Fluid Sim Hits 5 Billion Sorts/sec Without Compute Shaders

MichaelMoroz optimized his VRChat fluid simulation's Radix Sort to 5 billion key-value pairs per second with zero compute shader overhead, while explaining why multi-user fluid state inevitably diverges and why gravity keeps VRChat's particle pool approach workable.

2026-09-03 ~ 2026-09-03 · 3 related posts

• Radix Sort Hit 5B Key-Value Pairs per Second With Zero Compute Shaders — Michael_Moroz_ · 2026-09-03
• Why Multiplayer Fluid Sims Diverge Without Deterministic Simulation — Michael_Moroz_ · 2026-09-03
• Why VRChat Particle Pools Still Work: Gravity Naturally Converges States — Michael_Moroz_ · 2026-09-03