I am currently an Assistant Researcher at Zhongguancun Laboratory, collaborating closely with Dr. Kaihui Gao, Prof. Li Chen, and Prof. Dan Li. I received a Ph.D. degree from the Department of Computer Science and Technology, Tsinghua University, in 2025, where I was fortunate to be advised by Prof. Dan Li.

My research interests lie primarily in AI for networking and AI infra. Currently, I am focusing on building up simulators for LLM training and inference systems. To date, I have published two first-author papers in top-tier computer network venues, including USENIX NSDI and ACM SIGCOMM.

What's New

• [2025-12]. TPC member for SIGCOMM’ 2026.
• [2025-12]. Wormhole accpeted to NSDI’ 2026. Congratulations to Fei Long.
• [2025-12]. AEC member for NSDI’ 2026.
• [2025-11]. I passed my dissertation defense!
• [2025-08]. AEC member for SOSP’ 2025.
• [2025-06]. Shadow TPC member for Eurosys’ 2026.
• [2025-01]. Multiverse is now open-source!
• [2024-12]. Multiverse accepted to NSDI’ 2025!
• [2024-05]. RedTE accepted to SIGCOMM’ 2024!

Selected Papers

• [NSDI’25] Accelerating Design Space Exploration for LLM Training Systems with Multi-experiment Parallel Simulation.
  Fei Gui, Kaihui Gao, Li Chen, Dan Li, Vincent Liu, Ran Zhang, Hongbing Yang, Dian Xiong.

• [SIGCOMM’24] RedTE: Mitigating Subsecond Traffic Bursts with Real-time and Distributed Traffic Engineering.
  Fei Gui, Songtao Wang, Dan Li, Li Chen, Kaihui Gao, Congcong Min, Yi Wang.

Services

• TPC member: ACM SIGCOMM 2026, IEEE ICNP 2026.
• Artifact Evaluation TPC member: USENIX NSDI’ 2026, ACM ASPLOS 2026, ACM SOSP 2025, IEEE MICRO 2025.
• Reviewer: IEEE TMC 2024.