Wenbo Ji 嵇文博
ef63de1f60
For Wan VSA inference with 64-token tiles, each attention layer scattered Q, K, V and the gate into a tile buffer and then made four transposed copies. On SM100, one Triton kernel (tile_to_bhsd) now does the scatter and the transposes in one pass. Training, 256-token tiles, other GPUs and builds without the kernel use the previous path. FASTVIDEO_DISABLE_VSA64_FUSED_LAYOUT=1 turns the fused path off. On GB200 the layout and attention step goes from 15.7 ms to 8.6 ms. FastWan 1.3B frames are bit-exact with the previous path at sequence parallel 1 and 2.
FastVideo Documentation
This directory contains the FastVideo documentation built with MkDocs.
Build the docs locally
# Install dependencies
uv pip install -r requirements-mkdocs.txt
# Serve docs with live reload (recommended for development)
mkdocs serve
# Or build static site
mkdocs build
View the docs
Development server (with live reload)
mkdocs serve
Then open your browser to: http://127.0.0.1:8000
Static build
mkdocs build
python -m http.server -d site/
Then open your browser to: http://localhost:8000
Automatic Deployment
Documentation is automatically built and deployed to GitHub Pages when changes are pushed to the main branch via the .github/workflows/infra-docs.yml workflow.
Update documentation dependencies
Edit requirements-mkdocs.in, then regenerate the pinned Linux/Python 3.12 lock file:
uv pip compile requirements-mkdocs.in \
-o requirements-mkdocs.txt \
--python-platform x86_64-manylinux_2_28 \
--python-version 3.12