Zhixian (Jihyun) Jin Majoring EE @ KAIST

About Me

I am a Ph.D. student at the School of Electrical Engineering at KAIST, under the guidance of Prof. John Kim.

I love computer architecture and also have a strong interest in security!

My research so far has focused on side-channel attacks and measurement studies on GPUs. Currently, I am working on low latency scale up topologies for multi GPU systems and GPU communication for inference serving.

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Publications

  • [MICRO 2026] Jonghoon Kang, Zhixian Jin, John Kim. "In-Flight Collectives: Characterizing and Accelerating Compute-Communication Overlap in Distributed LLM System". In Proceedings of the 59th International Symposium on Microarchitecture (MICRO), Athens, Greece, Oct.-Nov. 2026.
  • [IEEE CAL 2026] Hyowon An, Gyeongjae Lee, Zhixian Jin, Joungho Kim, John Kim. "Memory Fabric: HBM Die-to-Die Interconnect for GPU Bandwidth Expansion". IEEE Computer Architecture Letters, Aug. 2026.
  • [MICRO 2024] Zhixian Jin, Jaeguk Ahn, Jiho Kim, Hans Kasan, Jina Song, Wonjun Song, John Kim. "Ghost Arbitration: Mitigating Interconnect Side-Channel Timing Attacks in GPU". In Proceedings of the 57th International Symposium on Microarchitecture (MICRO), Austin, TX, Nov. 2024. [PDF]
  • [MICRO 2024] Zhixian Jin, Christopher Rocca, Jiho Kim, Hans Kasan, Minsoo Rhu, Ali Bakhoda, Tor Aamodt, John Kim. "Uncovering Real GPU NoC Characteristics: Implications on Interconnect Architecture". In Proceedings of the 57th International Symposium on Microarchitecture (MICRO), Austin, TX, Nov. 2024. [PDF]