@article{hlsgdhierarchicallocalsgdwithstale,
  title = {HPSGD: Hierarchical Parallel SGD With Stale Gradients Featuring},
  author = {Yuhao Zhou and Qing Ye and Hailun Zhang and Jiancheng Lv},
  year = {2020},
  eprint = {2009.02701},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2009.02701v2},
}