Zirui Liu

I received my Ph.D. in Computer Science from Peking University in 2026, advised by Prof. Bin Cui and Prof. Tong Yang. My doctoral research explored data structures and their applications in optimizing system performance and efficiency.

Previously, I received my B.S. degree in Computer Science from Yuanpei College, Peking University in 2021.

I’m always happy to chat about research, life, and potential collaborations. Feel free to contact me at zirui.liu@pku.edu.cn.

My name written in Chinese is 刘子瑞 (Tel/WeChat: (+86) 18810703566).

Selected Publications

# indicates co-first author, * indicates corresponding author, \(^{\dagger}\) indicates project lead.

2026

SOSP

Multi-LLM Serving at Production Scale (Acc. rate: 62/390 = 15.9%)

Tianbao Zhou#, Yi Wang#, Yu Zhou#, Zirui Liu#*\(^\dagger\), Zhiming Wang, Yebo Peng, Yongfu Wang, Yi Zhang, Jinrun Yin, Kemeng Tian, and 7 more authors

In Proceedings of the 32nd ACM Symposium on Operating Systems Principles (SOSP), Oct 2026

Bib Code

@inproceedings{zhou2026multi,
  title = {Multi-LLM Serving at Production Scale <font color="red">(Acc. rate: 62/390 = 15.9%)</font>},
 author = {Zhou, Tianbao and Wang, Yi and Zhou, Yu and Liu, Zirui and Wang, Zhiming and Peng, Yebo and Wang, Yongfu and Zhang, Yi and Yin, Jinrun and Tian, Kemeng and Fu, Fangcheng and Liu, Tongxuan and Peng, Tao and Yang, Tong and Cui, Bin and Miao, Xupeng and Zhang, Ke},
  booktitle = {Proceedings of the 32nd ACM Symposium on Operating Systems Principles (SOSP)},
  year = {2026},
  organization = {ACM},
}

2025

arXiv

xLLM Technical Report

Tongxuan Liu, Tao Peng, Peijun Yang, Xiaoyang Zhao, Xiusheng Lu, Weizhe Huang, Zirui Liu, Xiaoyu Chen, Zhiwei Liang, Jun Xiong, and 42 more authors

arXiv preprint 2510.14686, Oct 2025

arXiv Bib PDF Code

@article{liu2025xllm,
  title = {xLLM Technical Report},
 author = {Liu, Tongxuan and Peng, Tao and Yang, Peijun and Zhao, Xiaoyang and Lu, Xiusheng and Huang, Weizhe and Liu, Zirui and Chen, Xiaoyu and Liang, Zhiwei and Xiong, Jun and Jin, Donghe and Zhang, Minchao and Guo, Jinrong and Deng, Yingxu and Zhang, Xu and Dong, Xianzhe and Wang, Siqi and Wu, Siyu and Wu, Yu and Tang, Zihan and Zeng, Yuting and Wang, Yanshu and Liu, Jinguang and Kang, Meng and Li, Menxin and Wang, Yunlong and Liu, Yiming and Ma, Xiaolong and Wang, Yifan and Zhang, Yichen and Yin, Jinrun and Zheng, Keyang and Yin, Jiawei and Zhang, Jun and Wang, Ziyue and Lin, Xiaobo and Liu, Liangyu and Lan, Liwei and Liu, Yang and Peng, Chunhua and Liu, Han and Ren, Songcheng and Wang, Xuezhu and Shen, Yunheng and Wang, Yi and Liu, Guyue and Chen, Hui and Yang, Tong and Yang, Hailong and Li, Jing and Ding, Guiguang and Zhang, Ke},
  journal = {arXiv preprint 2510.14686},
  year = {2025},
}

2024

SIGMOD

CAFE: Towards Compact, Adaptive, and Fast Embedding for Large-scale Recommendation Models (Honorable Mention for Best Artifact)

Hailin Zhang#, Zirui Liu#, Boxuan Chen, Yikai Zhao, Tong Zhao, Tong Yang, and Bin Cui

In Proceedings of the 2024 ACM International Conference on Management of Data (SIGMOD), Jun 2024

Bib PDF Code

@article{zhang2024cafe,
  title = {CAFE: Towards Compact, Adaptive, and Fast Embedding for Large-scale Recommendation Models <font color="red">(Honorable Mention for Best Artifact)</font>},
 author = {Zhang, Hailin and Liu, Zirui and Chen, Boxuan and Zhao, Yikai and Zhao, Tong and Yang, Tong and Cui, Bin},
  journal = {In Proceedings of the 2024 ACM International Conference on Management of Data (SIGMOD)},
  year = {2024},
  publisher = {ACM New York, NY, USA},
}

2023

TPDS

BurstBalancer: Do Less, Better Balance for Large-scale Data Center Traffic

Zirui Liu#, Yikai Zhao#, Zhuochen Fan#, Tong Yang, Xiaodong Li, Ruwen Zhang, Kaicheng Yang, Zihan Jiang, Zheng Zhong, Yi Huang, and 4 more authors

IEEE Transactions on Parallel and Distributed Systems, Jul 2023

Bib PDF Code

@article{liu2023burstbalancer,
  title = {BurstBalancer: Do Less, Better Balance for Large-scale Data Center Traffic},
 author = {Liu, Zirui and Zhao, Yikai and Fan, Zhuochen and Yang, Tong and Li, Xiaodong and Zhang, Ruwen and Yang, Kaicheng and Jiang, Zihan and Zhong, Zheng and Huang, Yi and Liu, Cong and Hu, Jing and Xie, Gaogang and Cui, Bin},
  journal = {IEEE Transactions on Parallel and Distributed Systems},
  year = {2023},
  publisher = {IEEE},
}

SIGMOD

TreeSensing: Linearly Compressing Sketches with Flexibility

Zirui Liu, Yixin Zhang, Yifan Zhu, Ruwen Zhang, Tong Yang, Kun Xie, Sha Wang, Tao Li, and Bin Cui

In Proceedings of the 2023 ACM International Conference on Management of Data (SIGMOD), Jun 2023

Bib PDF Code

@article{liu2023treesensing,
  title = {TreeSensing: Linearly Compressing Sketches with Flexibility},
 author = {Liu, Zirui and Zhang, Yixin and Zhu, Yifan and Zhang, Ruwen and Yang, Tong and Xie, Kun and Wang, Sha and Li, Tao and Cui, Bin},
  journal = {In Proceedings of the 2023 ACM International Conference on Management of Data (SIGMOD)},
  volume = {1},
  number = {1},
  pages = {1--28},
  year = {2023},
  publisher = {ACM New York, NY, USA},
  doi = {10.1145/3588910},
}