Publications

Research output

* denotes equal contribution.

2026

SkyWalker: A Locality-Aware Cross-Region Load Balancer for LLM Inference

Tian Xia, Ziming Mao, Jamison Kerney, Ethan J. Jackson, Zhifei Li, Jiarong Xing, Scott Shenker, Ion Stoica

EuroSys 2026 · Preprint

Paper

SkyNomad: Cost-Effective Multi-Region Scheduling for Deadline-Sensitive Workloads on Spot Instances

Zhifei Li*, Tian Xia*, and others, Ion Stoica

OSDI 2026 · In submission

Paper

LEANN: A Low-Storage Vector Index for Personal Devices

Yichuan Wang, Zhifei Li, Shu Liu, Yongji Wu, Ziming Mao, Yilong Zhao, Xiao Yan, Zhiying Xu, Yang Zhou, Ion Stoica, Sewon Min, Matei Zaharia, Joseph E. Gonzalez

MLSys 2026 · To appear

Paper

2024

Barbarians at the Gate: How AI is Upending Systems Research

Audrey Cheng*, Shu Liu*, Melissa Pan*, Zhifei Li, Bowen Wang, Alex Krentsel, Tian Xia, Mert Cemri, Jongseok Park, Shuo Yang, Jeff Chen, Aditya Desai, Jiarong Xing, Koushik Sen, Matei Zaharia, Ion Stoica

arXiv · 2024

Paper

FrontierCS: The Next Frontier of Computer Science

Qiuyang Mang*, Wenhao Cai*, Zhifei Li*, Huanzhi Mao*, and others, Ion Stoica, Jingbo Shang, Zhuang Liu, Alvin Cheung

arXiv · 2024

Paper