Hi There! #

I am a forth-year Ph.D. student of Computer Science at Sun Yat-sen University, advised by Assoc. Prof. Xianwei Zhang and Prof. Yutong Lu. I obtained bachelor degree on Software Engineering at Northwestern Polytechnical University.

My research interests lie in optimizing GPUs for machine learning systems. Currently, I am inerning at WeChat Search, Tencent, to optimize training and inference of RAG systems.

Click for my résumé, 中文简历.

News #

• [2025/11]. Bullet is accepted by ASPLOS'2026.
• [2025/04]. LLM serving system Bullet made public on arXiv and Github.
• [2024/12]. Start working as research intern at Wechat Search, Tencent.
• [2024/04]. Mixed-precision computing paper MixPert accepted by LCTES'2024.
• [2023/07]. My first paper KeSCo accepted by ICCD'2023.
• [2022/06]. Graduate from Northwestern Polytechnical University.

Publications #

ASPLOS'26 Code Bullet: Boosting GPU Utilization for LLM Serving via Dynamic Spatial-Temporal Orchestration
Zejia Lin, Hongxin Xu, Guanyi Chen, Zhiguang Chen, Yutong Lu, and Xianwei Zhang.

TACO HuntKTm: Hybrid Scheduling and Automatic Management for Efficient Kernel Execution on Modern GPUs
Wenxuan Pan, Zejia Lin, Jiangsu Du and Xianwei Zhang.

DAC'25 Slides Code GoPTX: Fine-grained GPU Kernel Fusion by PTX-level Instruction Flow Weaving
Kan Wu, Zejia Lin, Mengyue Xi, Zhongchun Zheng, Wenxuan Pan, Xianwei Zhang, and Yutong Lu.

LCTES'24 Slides MixPert: Optimizing Mixed-Precision Floating-Point Emulation on GPU Integer Tensor Cores
Zejia Lin, Aoyuan Sun, Xianwei Zhang, and Yutong Lu.

ICCD'23 Slides KeSCo: Compiler-based Kernel Scheduling for Multi-task GPU Applications
Zejia Lin^#, Zewei Mo^#, Xuanteng Huang, Xianwei Zhang, and Yutong Lu.

^{# Equal contribution.}

Experiences #

• [2024.12 – Now]. LLM research intern at Wechat Search, Tencent (Guangzhou).
• [Spring 2023]. Teaching assistant of DCS290/292: Compilation Principle, Sun Yat-sen University.
• [2021.07 – 2021.09]. Backend develop intern at Wechat Pay, Tencent (Shenzhen).

Awards #

• [2022, 2023]. First Class Scholarship, Sun Yat-sen University.
• [2022]. Excellence Scholarship, Tencent Technology.
• [2018 – 2021]. First Class Scholarship, Northwestern Polytechnical University.
• [2020]. Second Price, CCCC Wechat Mini Program Development.