Shizhen Zhao's Homepage

Shizhen Zhao (赵世振)

Associate Professor (with tenure)
School of Electronic Information and Electrical Engineering
Shanghai Jiao Tong University
E-mail: shizhenzhao at sjtu.edu.cn

About Me

I am currently an associate professor in Shanghai Jiao Tong University. From September 2015 to January 2019, I was a Software and Research Engineering in Google's network infrastructure team. Before that, I received my PhD degree from the School of Electrical and Computer Engineering of Purdue University in August 2015, advised by Prof. Xiaojun Lin.

Research Interests

Network for AI: Building Hybrid Optical/Electrical Data Center networks for AI Clusters. On the network side, we cover topology, routing and protocol design; on the host side, we focus on RDMA, collective communication, container networking, etc.

AI for Network: Build a scalable and robust AI model to support the design of network topology, routing, communication algorithm, job scheduling, etc.

News

[April 2025]: One paper is accepted by SIGCOMM 2025.

[December 2024]: One paper is accepted by NSDI 2025.

[Oct 2024]: One paper is accepted by ToN.

[July 2024]: One paper is accepted by NSDI 2025.

[May 2024]: Two papers are accepted by SIGCOMM 2024.

[March 2023]: Our paper is accepted by ToN.

[December 2022]: Our paper is accepted by NSDI 2023.

[December 2022]: Our paper is accepted by INFOCOM 2023.

[September 2022]: Our paper is accepted by ToN.

[October 2021]: Our paper is accepted by SIGMETRICS 2022.

[August 2021]: Our paper is accepted by ICNP 2021.

Selected Publications (Full Publication List)

Conference

Weihao Jiang, Wenli Xiao, Yuqing Yang, Peirui Cao, Shizhen Zhao, "Orderlock: A New Type of Deadlock and its Implications on High Performance Network Protocol Design," in SIGCOMM, Coimbra, Portugal, September, 2025. (Corresponding Author)

Xiwei Wu, Yueyang Feng, Tianyi Huang, Xiaoyang Lu, Shengkai Lin, Lihan Xie, Shizhen Zhao, Qinxiang Cao, "VEP: A Two-stage Verification Toolchain for Full eBPF Programmability," in NSDI, Philadelphia, PA, USA, April, 2025. (Co-corresponding Author)

Shengkai Lin, Shizhen Zhao, Peirui Cao, Xinchi Han, Quan Tian, Wenfeng Liu, Qi Wu, Donghai Han, Xinbing Wang, "ONCache: A Cache-Based Low-Overhead Container Overlay Network," in NSDI, Philadelphia, PA, USA, April, 2025. (Corresponding Author)

Ximeng Liu, Shizhen Zhao, Yong Cui, Xinbing Wang, "FIGRET: Fine-Grained Robustness-Enhanced Traffic Engineering," in SIGCOMM, Sydney, Australia, August, 2024. (Corresponding Author)

Cong Liang, Xiangli Song, Jing Cheng, Mowei Wang, Yashe Liu, Zhenhua Liu, Shizhen Zhao, Yong Cui, "NegotiaToR: Towards A Simple Yet Effective On-demand Reconfigurable Datacenter Network," in SIGCOMM, Sydney, Australia, August, 2024.

Shizhen Zhao, Qizhou Zhang, Peirui Cao, Xiao Zhang, Xinbing Wang, Chenghu Zhou, "Flattened Clos: Designing High-performance Deadlock-free Expander Data Center Networks Using Graph Contraction," in NSDI, Boston, MA, USA, April, 2023.

Yunzhuo Liu, Bo Jiang, Shizhen Zhao, Tao Lin, Xinbing Wang, Chenghu Zhou, "LIBRA: Contention-Aware GPU Thread Allocation for Data Parallel Training in High Speed Networks," in INFOCOM, New York, USA, May, 2023.

Shizhen Zhao, Peirui Cao, Xinbing Wang, "Understanding the Performance Guarantee of Physical Topology Design for Optical Circuit Switched Data Centers," in SIGMETRICS, Mumbai, India, June, 2022.

Peirui Cao, Shizhen Zhao, Min Yee Teh, Yunzhuo Liu, Xinbing Wang, "TROD: Evolving From Electrical Data Center to Optical Data Center," in ICNP, Virtual Event, November, 2021. (Corresponding Author)

Shizhen Zhao, Rui Wang, Junlan Zhou, Joon Ong, Jeffery C. Mogul, Amin Vahdat, "Minimal Rewiring: Efficient Live Expansion for Clos Data Center Networks," in NSDI, Boston, Massachusetts, USA, February, 2019. (Technical Report)

Shizhen Zhao, Xiaojun Lin, Dionysios Aliprantis, Hugo N. Villegas, Minghua Chen, "Online Multi-stage Decisions for Robust Power-Grid Operations under High Renewable Uncertainty," in IEEE INFOCOM, San Francisco, California, USA, April, 2016. (Technical Report)

Shizhen Zhao, Xiaojun Lin, Minghua Chen, "Peak-Minimizing Online EV Charging: Price of Uncertainty and Algorithm Robustification," in IEEE INFOCOM, Hong Kong, China, April, 2015. (Technical Report)

Shizhen Zhao, Xiaojun Lin, "Rate-Control and Multi-Channel Scheduling for Wireless Live Streaming with Stringent Deadlines," in IEEE INFOCOM, Toronto, Canada, April, 2014. (Technical Report)

Shizhen Zhao, Xiaojun Lin, "On the Design of Scheduling Algorithms for End-to-End Backlog Minimization in Multi-hop Wireless Networks," in IEEE INFOCOM, Orlando, Florida, USA, March 2012. (Technical Report)

Shizhen Zhao, Luoyi Fu, Xinbing Wang, Qian Zhang, "Fundamental Relationship between Node Density and Delay in Wireless Ad Hoc Networks with Unreliable Links," in ACM MobiCom 2011, Las Vegas, Sept. 2011. (Technical Report)

Journal

Wenli Xiao, Shizhen Zhao, Xinbing Wang, Chenghu Zhou, "Segment EDF: A Scheduling Policy with Tight Deterministic Latency under Multi-hop Networks," in IEEE/ACM Transactions on Networking. (Corresponding Author)

Shizhen Zhao, Ximeng Liu, Tianyu Zhu, Xinbing Wang, "Pulse+: DetNet Routing Under Delay-diff Constraint," submitted to IEEE/ACM Transactions on Networking. (Technical Report)

Peirui Cao, Shizhen Zhao, Dai Zhang, Zhuotao Liu, Mingwei Xu, Min Yee Teh, Yunzhuo Liu, Xinbing Wang, Chenghu Zhou, "Threshold-based Routing-Topology Co-design for Optical Data Center," in IEEE/ACM Transactions on Networking, Volume 31, Issue 6, December 2023.

Min Yee Teh, Shizhen Zhao, Peirui Cao, Keren Bergman, "Enabling Quasi-static Reconfigurable Networks with Robust Topology Engineering," in IEEE/ACM Transactions on Networking, Volume 31, Issue 3, June 2023.

Shizhen Zhao, Yihan Zou, Xiaojun Lin, Dionysios Aliprantis, Hugo N. Villegas Pico, Minghua Chen, Anya Castillo, "Leveraging Generators With Complementary Capabilities for Robust Multistage Power Grid Operations," in IEEE Transactions on Control of Network Systems, 2020.

Shizhen Zhao, Xiaojun Lin, Minghua Chen, "Robust Online Algorithms for Peak-Minimizing EV Charging under Multi-Stage Uncertainty," in IEEE Transactions on Automatic Control, 2017. (Technical Report)

Shizhen Zhao, Xiaojun Lin, "Design of Scheduling Algorithms for End-to-End Backlog Minimization in Wireless Multi-hop Networks under K-hop Interference Models," in IEEE/ACM Transactions on Networking, 2016. (Technical Report)

Shizhen Zhao, Xinbing Wang, "Node Density and Delay in Large-Scale Wireless Networks with Unreliable Links," in IEEE/ACM Transactions on Networking, 2014.

Group

Past Ph.D. Students: Peirui Cao (南京大学)

Ph.D. Students: Xinchi Han, Wenli Xiao, Shengkai Lin, Weihao Jiang, Ximeng Liu

Master Students: Qinwei Yang, Yongxi Lv, Qizhou Zhang, Xiao Zhang, Tianyi Huang, Yuqing Yang

Undergraduate Students: Changkun Liu (Ph.D. at HKUST), Haichao Yang (Ph.D. at UCSD), Yongqi Wang (Alibaba Ant Group)