Files
hao-ai-lab-FastVideo/fastvideo/train
SolitaryThinkerandClaude Opus 5.5 d692d1cc3b [misc]: remove DreamX World, HunyuanGameCraft, GLM-Image, LongCat, TurboDiffusion, and Z-Image
These ports were marked pending removal in #1820. Each has a newer,
maintained counterpart in the repo, and their model-specific hooks
leaked into shared stages, request fields, CLI args, and loaders.

Remove each model's code, configs, presets, examples, converters,
tests, cookbook pages, CI planner rules, and registry entries, along
with the shared-code hooks only they used:

- camera kwargs (GameCraft camera_states, DreamX y_camera) in the
  shared denoising loop
- LongCat refine branches in latent preparation, the decoding crop,
  the --bsa-* CLI args, its train model, and third_party/longcat_video
- Z-Image cfg_normalization/cfg_truncation and GameCraft/DreamX
  camera/action fields in SamplingParam, ForwardBatch, and the schema
- the GLM-Image vision-language loader and the TurboDiffusion rCM
  scheduler and SLA auto-select in the train entrypoint
- the Wan definition groups that only preserved DreamX detector order

Removed env vars and their legacy aliases move to DEPRECATED_VARIABLES
per the env-var policy. Matrix Game 2.0 stays: the new trainer's world
model scenarios depend on it. The SLA and BSA attention backends stay.
The TurboDiffusion int8 kernels in fastvideo-kernel are left for a
separate kernel PR.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
2026-10-06 22:40:54 +00:00
..
2026-07-19 18:37:47 -07:00

Fastvideo New Modular Training Framework

This is the new training infrastructure for FastVideo, replacing the monolithic per-model pipeline scripts in fastvideo/training/.

Key differences from fastvideo/training/

fastvideo/training/ (legacy) fastvideo/train/ (new)
Architecture One pipeline class per model+method combo Composable: model plugins + method classes
Adding a model Write a full training pipeline from scratch Add a model plugin under models/
Adding a method Fork an existing pipeline Add a method class under methods/
Config Flat argparse flags Hierarchical YAML with dotted-key overrides
Distributed Manual FSDP setup per pipeline Shared trainer handles FSDP/HSDP

Structure

fastvideo/train/
├── models/       # Per-model plugins (wan/, hunyuan/, ...)
├── methods/      # Training methods (fine_tuning/, distribution_matching/, ...)
├── callbacks/    # Validation, grad clipping, etc.
├── entrypoint/   # CLI entry points (train.py, dcp_to_diffusers.py)
├── trainer.py    # Core training loop
└── utils/        # Config parsing, dataloader, etc.

Usage

See examples/train/ for configs and launch scripts.

Guides