Topic
video generation
2 posts tagged video generation.
video
16.8× faster video generation: distilling Wan 2.2 from 40 steps to 4
A public, no-training LoRA cuts Wan 2.2 A14B from 809 s to 48 s per clip on one A100 (16.8×), held across 13 scenes. The full path to that number: the evaluation-count budget that set the target, the distilled output that came back washed-out, the color grade that half-fixed it, and the checkpoint swap that fixed it for free.
video generationdistillationdiffusion
16.8×faster video generation on Wan 2.2809 s ▸ 48 s
video
Fixing block-sparse INT8 attention for Wan 2.2 — and a 1.78× two-expert cache
The published SOTA sparse-attention kernel gives ~1× on Wan 2.2 out of the box, because its block selector marks most video-latent blocks 'unpredictable.' Swapping only the selector recovers 1.3–1.76×. Plus a step cache tuned to the model's two experts, and a free sparsity signal already in the kernel's registers.
video generationattentionsparsityquantization
1.78×two-expert step cacheno cache ▸ per-expert