Aryan KumarandClaude Opus 5.5
d0b91810b2
_nvfp4_quantize copied every activation into a zero-padded buffer (F.pad copies even when no rows are added) before FlashInfer quantization. For the 128x4 swizzled layout FlashInfer already pads the scale factors to whole row tiles and quantizes the logical rows exactly as it would the padded copy, so quantize the input directly and keep the padded path as a fallback when the returned scales do not span the padded tile. On DGX Spark the pad accounted for about 2.7k device copies plus the matching fills per FastH3 Trim denoise (about 6 s of 62 s). Quantized bytes, scale factors and mm_fp4 outputs are bit-identical for the H3 projection shapes, and a FastH3 Trim 832x480x124 clip is bit-identical with denoise at 72 s instead of 78 s. The GB10 quantization fence stays: without it, identical seeded requests still diverge with or without the pad copy, on FlashInfer 0.6.18 and 0.7.0. Its comment and the Spark guide now describe it without the padded input. The off-Spark fence test skips on GB10, where the fence is expected. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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