prepare the src data
```
python scripts/download_hf.py --repo_id=FastVideo/Distill-30K-Data-Src --local_dir=data/Distill-30K-Data-Src --repo_type=dataset
cd data/Distill-30K-Data-Src
cat archive_name.tar.gz.* > Distill-30K-Data-Src.tar.gz
rm archive_name.tar.gz.*
tar --use-compress-program="pigz --processes 64" -xvf Distill-30K-Data-Src.tar.gz
mv ephemeral/hao.zhang/codefolder/FastVideo-OSP/data/Distill-30K-Src/* .
rm -r ephemeral
rm Distill-30K-Data-Src.tar.gz
cd ../..
```
Now the src data is stored in folder data/Distill-30K-Data-Src, adjust the path in `data/Distill-30K-Src/merge.txt` correspondingly

Adjust the `SHARD_NUM` (total shards num) and `SHARD_IDX` (idx of the shard to preprocess) correspoindingly in `./scripts/preprocess_hunyuan_data.sh` for each GPU node to preprocess different shards
```
bash ./scripts/preprocess_hunyuan_data.sh
```
The preprocessed data will be stored in `data/HD-Hunyuan-30K-Distill-Data_Shard*`