My research focuses on building secure and efficient computer systems for AI infrastructure. I investigate Capability Hardware Enhanced RISC Instructions (CHERI) and complementary security mechanisms to create safe, isolated execution environments for AI agents. Additionally, I optimize systems software for AI training and inference to maximize performance and resource efficiency. My broader interests encompass cloud computing, cluster scheduling, and distributed resource management.

I am a Research Fellow at the University of Leeds and a Visiting RF at the University of Glasgow.

I am a co-founder of ACE3 AI LTD and a technical consultant on AI infrastructure at Kuaishou Technology.

I have served as a reviewer for IEEE Transactions on Parallel and Distributed Systems, a member of the EuroSys Shadow Program Committee, and Publicity Co-Chair for IEEE CISOSE JCC.

Portrait of Xiaoyang Sun

Selected publications

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Selected work in memory safety, AI systems, and cluster computing.

CapOpt: Capability-aware Superoptimization for Secure and Provably Faster Code

Xiaoyang Sun, Dejice Jacob, Huanting Wang, Jeremy Singer, Zheng Wang

2026 International Conference on Object-Oriented Programming Systems, Languages, and Applications (OOPSLA) (CCF A)

All publications (23)

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