@article{rollpackermitigatinglongtailrolloutsforf,
  title = {RollPacker: Mitigating Long-Tail Rollouts for Fast, Synchronous RL Post-Training},
  author = {Wei Gao and Yuheng Zhao and Dakai An and Tianyuan Wu and Lunxi Cao and Shaopan Xiong and Ju Huang and Weixun Wang and Siran Yang and Wenbo Su and Jiamang Wang and Lin Qu and Bo Zheng and Wei Wang},
  year = {2025},
  eprint = {2509.21009},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2509.21009},
}