Fully-Fused CUDA Zip-NeRF Trains 7x Faster, Renders 10x Faster

A developer used Claude Opus to build fused-zipnerf, a fully-fused CUDA implementation of Zip-NeRF that trains in 36 minutes on an RTX 5090 (6-7x faster) and renders 10x faster, though still limited to 3-4 FPS.

2026-10-31 ~ 2026-10-31 · 2 related posts

• Fused Zip-NeRF: CUDA rewrite trains 6-7x faster, renders 10x faster on a 5090 — jon_barron · 2026-10-31
• Zip-NeRF Gets Orders of Magnitude Faster to Train, but Rendering Still Crawls at 3-4 FPS — jonstephens85 · 2026-10-31