bash dist_train.sh

@misc{ren2021shunted,
      title={Shunted Self-Attention via Multi-Scale Token Aggregation}, 
      author={Sucheng Ren and Daquan Zhou and Shengfeng He and Jiashi Feng and Xinchao Wang},
      year={2021},
      eprint={2111.15193},
      archivePrefix={arXiv},
      primaryClass={cs.CV}
}