Ziyi Xu | 徐子绎

I am a fourth-year undergraduate student in the ACM Honors Class, Zhiyuan College, Shanghai Jiao Tong University. I previously worked as a visiting scholar at Stanford University through the UGVR program, advised by Christos Kozyrakis. Before that, I was a research intern at the Emerging Parallel Computer Center (EPCC Lab), working with Prof. Quan Chen and Dr. Weihao Cui.

My research interests broadly lied in efficient distributed systems and machine learning systems. I was particularly interested in building high-performance, resource-efficient, and resilient infrastructures for large-scale LLM serving. Now I'm trying to find the meaning to my life and find what I really enjoy. Life is short.

Email / CV / Github / Twitter(X) / Personal Blog (CN)

News

[2025/11] I began my journey along RadixArk.

[2025/06] I started my visiting in Stanford MAST lab!

[2024/09] I became the teaching assistant of the course Optimization Methods (MATH3806, 2024 Fall).

[2024/07] I became the teaching assistant of the course Principle and Practice of Computer Algorithms (CS1952@SJTU, 2024 Summer).

[2024/06] I joined EPCC and started my system research journey!

[2023/09] I became the teaching assistant of the course Programming (CS1953@SJTU, 2023 Fall).

[2022/08] I was admitted to ACM Honors Class, Zhiyuan College, Shanghai Jiao Tong University.

Experience

	Stanford MAST Lab 2024.6 - Present Research Intern Research Advisor: Prof. Christos Kozyraki
	Emerging Parallel Computer Center (EPCC Lab) 2024.6 - Present Research Intern Research Advisor: Prof. Quan Chen and Postdoc. Weihao Cui
	Shanghai Jiao Tong University (SJTU) 2022.08 - Present Undergraduate Student, ACM Honors Class Core GPA: 4.0/4.3, Ranking: 4/30 (until 2025 fall semester) Academic Advisor: Prof. Yong Yu

Selected Publications

	FailSafe: High-performance Resilient Serving Ziyi Xu, Zhiqiang Xie, Swapnil Gandhi, Christos Kozyrakis MLSys 26
	Strata: Hierarchical Context Caching for Long-context LLM Serving Zhiqiang Xie, Ziyi Xu, Mark Zhao, Yuwei An, Vikram Sharma Mailthody, Scott Mahlke, Michael Garland, Christos Kozyrakis OSDI 26
	Optimizing SLO-oriented LLM Serving with PD-Multiplexing Weihao Cui, Yukang Chen, Han Zhao, Ziyi Xu, Quan Chen, Xusheng Chen, Yangjie Zhou, Shixuan Sun, Minyi Guo, ASPLOS 26
	Efficient Function-as-a-Service for Large Language Models with TIDAL Weihao Cui, Ziyi Xu, Han Zhao, Quan Chen, Zijun Li, Bingsheng He, Minyi Guo Under ReviewarXiv

Miscellaneous

Apart from my passion for computer science, I have a wide range of interests and hobbies.

I am a guitar player 🎸 since 2022. My favorite band is GALNERYUS. Wish to be my own guitar hero.

I am a big fan of the 🎀 Touhou Project. I've been playing the games and listening to Touhou music since 2019. I've long dreamed of becoming a doujin creator one day.

I am currently interested in BanG Dream , both anime and game. My friend hsfzLZH1 introduced me to the wonderful game Girls Band Party (GBP), and now i'm active in both the legacy game GBP and the new Our Notes.

I am also a dedicated Minecraft player 🎮. I ran a server with friends and we have built many fun things together.

I love football ⚽ and co-lead my team (ACMClass2022) to win ACM Class Football Championship twice together.

This homepage is designed based on Xingyang Li, Haoran Geng and Jon Barron's website. Last updated: Oct. 23, 2026
© 2024-2026 Ziyi Xu