Tong XIN (辛统)

Tong XIN (辛统)

PhD Student at SJTU IPADS

Institute of Parallel and Distributed Systems (并行与分布式系统研究所, IPADS)

Shanghai Jiao Tong University (上海交通大学, SJTU)

xin_tong (AT) sjtu (dot) edu (dot) cn

Research Focus

My research sits at the intersection of AI and systems. I primarily focus on two complementary directions:

Systems for AI workloads

Efficient infrastructure for AI workloads, from on-device inference with Sereno to large-scale LLM reinforcement learning with UniExact.

Systems where AI is the author

Correctness and long-term maintenance when AI writes system artifacts, from LLM-derived knowledge with LLMake to file-system code with FSCrash.

I am a PhD student at the Institute of Parallel and Distributed Systems (并行与分布式系统研究所, IPADS), Shanghai Jiao Tong University (上海交通大学, SJTU), advised by Haibo Chen (陈海波) and Mingkai Dong (董明凯). I received my B.Eng. degree in Information Engineering from SJTU in 2025.

Across both directions, I work at the intersection of ML systems and operating systems, with an emphasis on dependable, efficient, and deployable systems.

Internship

Tencent Hunyuan Foundation Models (腾讯混元基础模型), Qingyun Program (青云计划)
Research on large-scale LLM reinforcement learning.

Selected Publications

  1. OSDI’26
    Inference in the Shadows: Taming Memory Bandwidth Contention in Mobile LLM Inference with Sereno
    Inference in the Shadows: Taming Memory Bandwidth Contention in Mobile LLM Inference with Sereno
    Tong Xin, Xinrui Shi, Mingkai Dong, and Zeyu Mi
    In 20th USENIX Symposium on Operating Systems Design and Implementation (OSDI ’26), Jul 2026
  2. SOSP’26
    StarfishOS: Revisiting Single System Image on CXL with State-partitioned Microkernel
    StarfishOS: Revisiting Single System Image on CXL with State-partitioned Microkernel
    Fangnuo Wu, Jingshen Yan, Mingkai Dong, Wenjun Cai, Jingwei Xu, Tong Xin, and Haibo Chen
    In Proceedings of the 32nd ACM Symposium on Operating Systems Principles (SOSP ’26), 2026
    Accepted to SOSP 2026
  3. EuroSys’26
    SwitchFS: Asynchronous Metadata Updates for Distributed Filesystems with In-Network Coordination
    SwitchFS: Asynchronous Metadata Updates for Distributed Filesystems with In-Network Coordination
    Jingwei Xu, Mingkai Dong, Qiulin Tian, Ziyi Tian, Tong Xin, and Haibo Chen
    In Proceedings of the 21st European Conference on Computer Systems (EuroSys ’26), Apr 2026
  4. Internetware’24
    Parer: Boosting EROFS Image Creation With Parallelism and Reproducibility
    Yifan Zhao, Tong Xin, and Mingkai Dong
    In Proceedings of the 15th Asia-Pacific Symposium on Internetware, Jul 2024

Presentations

Conference Oral OSDI '26 · Seattle, WA

Inference in the Shadows: Taming Memory Bandwidth Contention in Mobile LLM Inference with Sereno

Oral presentation at the 20th USENIX Symposium on Operating Systems Design and Implementation.

Presentation page

Open Source

PowerServe
Core contributor to the inference engine and speculative decoding module.

News

Jul 14, 2026 I gave the oral presentation of Sereno at OSDI ‘26 in Seattle.
Jul 06, 2026 Our paper StarfishOS has been accepted to SOSP 2026!
Apr 24, 2026 Our paper Sereno has been accepted to OSDI 2026!
Jan 07, 2026 I was elected Chairman of the CCF SJTU Student Chapter.
Sep 01, 2025 I began my PhD journey at the Institute of Parallel and Distributed Systems (并行与分布式系统研究所, IPADS), Shanghai Jiao Tong University (上海交通大学, SJTU).
Aug 23, 2025 Our paper SwitchFS has been accepted to EuroSys 2026!
Jun 30, 2025 I received my B.Eng. degree from Shanghai Jiao Tong University (上海交通大学, SJTU) and was honored as a Shanghai Outstanding Graduate (上海市优秀毕业生).

Education

Shanghai Jiao Tong University (上海交通大学) Shanghai, China
Advisors: Prof. Haibo Chen (陈海波) and Associate Prof. Mingkai Dong (董明凯)
Shanghai Jiao Tong University (上海交通大学) Shanghai, China
Shanghai Outstanding Graduate (Top 3%)

Awards

  • Shanghai Outstanding Graduate (2025) : Top 3% of graduates.
  • University-level scholarships and honors : Won 7 times during undergraduate study.
  • CCSP Silver Medal (2024) - CCF : Selected from top CSP scorers to compete in CCSP (CCF Collegiate Computer Systems and Program Design Competition), and won the Silver Medal.
  • CCF CSP Certification : Top 1.7% nationwide.

Beyond Research

  • I enjoy badminton and compete as a member of the SJTU Badminton Team. I also captain the Badminton Team of SEIEE at SJTU.