Will LinandClaude Fable 5
a20b69a4a8
- fine_tuning/minimax_h3: FA4 dense control, VSA sparsity 0/0.8/0.9/0.95/0.97 overfits, effective-batch-2 via gradient accumulation over two videos (validated: both losses decline, ~10 s/step on 4x GB200), and the 2-GPU configs kept as negative results (sp=2 backward working set OOMs 184 GiB). - distribution_matching/minimax_h3: data-free DMD2 (rollout_mode: simulate) overfit and its 32-GPU scale-up (8 trays, sp=4, HSDP 8x4, global batch 64 = 8 DP groups x accum 8). - examples/train/slurm/dmd2_32xgb200.sbatch: login-node launch deriving world size/rendezvous from the allocation, per-node /dev/shm weight cache, per-node log dirs, CLUSTER-marked partition/account/container hooks. - README.md in both config dirs: launch, topology/batch semantics, measured step times, memory findings, shard cache, preprocessing. - pyproject: explicit setuptools include list. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Training
Quick Start
Single-node
bash examples/train/run.sh <config.yaml> [--dotted.key value ...]
The script auto-detects available GPUs. Override with NUM_GPUS:
NUM_GPUS=4 bash examples/train/run.sh \
examples/train/configs/fine_tuning/wan/t2v.yaml
Multi-node (Slurm)
bash examples/train/run_slurm.sh <config.yaml> <num_nodes> [--dotted.key value ...]
bash examples/train/run_slurm.sh \
examples/train/configs/fine_tuning/wan/t2v.yaml 4 \
--training.distributed.hsdp_shard_dim 8 \
--training.distributed.hsdp_replicate_dim 4
Slurm environment variables:
| Variable | Default | Description |
|---|---|---|
PARTITION |
main |
Slurm partition |
NUM_GPUS |
8 |
GPUs per node |
CPUS_PER_TASK |
128 |
CPUs per task |
MEM |
1440G |
Memory per node |
EXCLUDE |
"" |
Nodes to exclude |
Overriding config values
Any config field can be overridden from the command line using dotted keys:
bash examples/train/run.sh examples/train/configs/fine_tuning/wan/t2v.yaml \
--training.optimizer.learning_rate 1e-5 \
--training.loop.max_train_steps 1000 \
--training.checkpoint.output_dir outputs/my_experiment
Resuming from a checkpoint
bash examples/train/run.sh examples/train/configs/fine_tuning/wan/t2v.yaml \
--training.checkpoint.resume_from_checkpoint outputs/my_experiment/checkpoint-500
W&B Logging
Training metrics and validation videos are logged to Weights & Biases. Set your API key before launching:
export WANDB_API_KEY=your_key_here
To disable W&B (e.g. for local debugging):
export WANDB_MODE=offline
The project name and run name are set in the config under training.tracker:
training:
tracker:
project_name: my_project
run_name: my_run
Directory Layout
examples/train/
├── configs/ # Single-step training configs (by method and model)
├── scenario/ # Multi-step end-to-end training pipelines
├── run.sh # Single-node launcher
└── run_slurm.sh # Multi-node Slurm launcher
See configs/README.md and scenario/README.md for details.
The featured QAD Wan2.1 MixKit scenario runs Attn-QAT supervised fine-tuning, checkpoint export, and three-step DMD2. See the Attn-QAT training guide.