About

About Me

I am a Ph.D. student at KAUST under the supervision of Prof. Panos Kalnis.

My research interests include machine learning systems, system acceleration, and distributed ML inference.

ML Systems System Acceleration Distributed Inference
Updates

News

2026
I started working with Prof. Hongcheng Guo's lab at Fudan University this summer. We are happy to collaborate on multi-agent systems and have started several projects together.
2025
I successfully completed my internship. During the internship, I helped release the KunServe codebase as open source. I am grateful to the professors and fellow students I met for their guidance and support.
From May to late August 2025, I interned with the IPADS group at Shanghai Jiao Tong University under the supervision of Prof. Xingda Wei. My research focused on elastic LLM serving, specifically the KUNSERVE system.
Selected work

Publications

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EMAS: Stabilizing Multi-Agent System Evolution through Evidence-Guided Revision

Chao Fei, Qingyi Si, Kaihua Liang, Yanghua Xiao, Panos Kalnis, Hongcheng Guo

arXiv preprint · 2026

Evolves multi-agent prompts and topology from recurring evidence-guided diagnoses, accepting revisions only after paired validation improves accuracy or cost.

Exploring a Layer-Wise Design Space for KV Cache Eviction

Chao Fei, Kaihua Liang, Hanzhi Hu, Hongcheng Guo, Jian Weng, Marco Canini, Panos Kalnis

arXiv preprint · 2026

Explores layer-wise composition of existing KV-cache eviction methods, showing that heterogeneous routing and profile-guided placement improve long-context quality under matched cache budgets.

CHESS: Context-aware Hierarchical Efficient Semantic Selection for Long-Context LLM Inference

Chao Fei, Guozhong Li, Chenxi Liu, Panos Kalnis

arXiv preprint · 2026

Combines context-aware hierarchical KV selection with coarse-grained system support to retain quality while accelerating long-context decoding.