I am a PhD candidate at Seoul National University (SNU) SCALE Lab, supervised by Prof. Jung Ho Ahn, and I will be graduating in summer of 2025. Previously, I was a visiting researcher at the University of Illinois Urbana-Champaign (UIUC) FAST Lab from March 2023 to March 2024, supervised by Prof. Nam Sung Kim. Before pursuing my PhD, I received a BSE degree in Electrical and Computer Engineering (ECE) from SNU in 2019.
My research focuses on memory systems, specifically DRAM security, reliability, and performance. My current work focuses on building cost- and energy-efficient memory systems and DRAM microarchitecture for LLM inference. I have also contributed to accelerating Large-Language Model (LLM) inference using heterogeneous system with GPU and Processing-in-Memory (PIM), accelerating Fully Homomorphic Encryption (FHE), improving polynomial approximations for Privacy-Preserving Machine Learning (PPML) based on FHE and Multi-Parity Computation (MPC), and improving application startup-time of mobile system with an optimized page reclamation policies.
I hold dual nationalities for the USA and South Korea, and I have completed my mandatory military service for South Korea.
Nationality
U.S.A. and S. Korea (dual nationality)
Education
B.S.E. in Electrical and Computer Engineering, Seoul National University, 2019
Ph.D Candidate, Seoul National University (Prof. Jung Ho Ahn), 2019 - Now
Visiting Research, UIUC (Prof. Nam Sung Kim), 2023 - 2024
Publication
[IEEE CAL 2025] “X-PPR: Post package repair for CXL memory”,
Chihun Song, Michael Jaemin Kim, Yan Sun, Houxiang Ji, Kyungsan Kim, TaeKyeong Ko, Jung Ho Ahn, Nam Sung Kim
[ASPLOS 2025] “Marionette: A RowHammer Attack via Row Coupling”,
Seungmin Baek, Minbok Wi, Seonyong Park, Hwayong Nam, Michael Jaemin Kim, Nam Sung Kim, Jung Ho Ahn
[ASPLOS 2025] “M5: Mastering page migration and memory management for CXL-based tiered memory systems”,
Yan Sun, Jongyul Kim, Douglas Yu, Jiyuan Zhang, Siyuan Chai, Michael Jaemin Kim, Hwayong Nam, Jaehyun Park, Eojin Na, Yifan Yuan, Ren Wang, Jung Ho Ahn, Tianyin Xu, Nam Sung Kim
[IEEE ESL 2024] “Hechi: A Hybrid Approach for Efficient Memory Reclamation Techniques in Mobile Systems”,
Wanju Doh, Seoyoung Ko, Michael Jaemin Kim, Jung Ho Ahn
[ISCA 2024] “DRAMScope: Uncovering DRAM Microarchitecture and Characteristics by Issuing Memory Commands”,
Hwayong Nam, Seungmin Baek, Minbok Wi, Michael Jaemin Kim, Jaehyun Park, Chihun Song, Nam Sung Kim, Jung Ho Ahn
[ASPLOS 2024] “AttAcc! Unleashing the Power of PIM for Batched Transformer-based Generative Model Inference”,
Jaehyun Park, Jaewan Choi, Kwanhee Kyung, Michael Jaemin Kim, Yongsuk Kwon, Nam Sung Kim, Jung Ho Ahn
[ASPLOS 2024] “TAROT: A CXL SmartNIC-Based Defense Against Multi-bit Errors by Row-Hammer Attacks”,
Chihun Song, Michael Jaemin Kim, Tianchen Wang, Houxiang Ji, Jinghan Huang, Ipoom Jeong, Jaehyun Park, Hwayong Nam, Minbok Wi, Jung Ho Ahn, Nam Sung Kim
[MICRO 2023] “How to Kill the Second Bird with One ECC: The Pursuit of Rowhammer Resilient DRAM”,
Michael Jaemin Kim, Jaehyun Park, Minbok Wi, Seoyoung Ko, Jaeyoung Choi, Hwayong Nam, Nam Sung Kim, Eojin Lee, Jung Ho Ahn
[IEEE CAL 2023] “X-ray: Discovering DRAM internal structure and error characteristics by issuing memory commands.”,
Hwayong Nam, Seunngmin Baek, Minbok Wi, Michael Jaemin Kim, Jaehyun Park, Chihun Song, Nam Sung Kim, Jung Ho Ahn
[HPCA 2023] “SHADOW: Preventing Row Hammer in DRAM with Intra-Subarray Row Shuffling”,
Minbok Wi, Jaehyun Park, Michael Jaemin Kim, Seoyoung Ko, Nam Sung Kim, Eojin Lee, Jung Ho Ahn
[arxiv] “AESPA: Accuracy Preserving Low-degree Polynomial Activation for Fast Private Inference”,
Jaehyun Park, Michael Jaemin Kim, Wonkyung Jung, Jung Ho Ahn
[IEEE TC 2022] “Future Scaling of Memory Hierarchy for Tensor Cores and Eliminating Redundant Shared Memory Traffic Using Inter-Warp Multicasting”,
Sunjung Lee, Seunghwan Hwang, Michael Jaemin Kim, Jaewan Choi, and Jung Ho Ahn
[ISCA 2022] “BTS: An Accelerator for Bootstrappable Fully Homomorphic Encryption”,
Sangpyo Kim, Jongmin Kim, Michael Jaemin Kim, Wonkyung Jung, John Kim, Minsoo Rhu, Jung Ho Ahn
[HPCA 2022] “Mithril: Cooperative Row Hammer Protection on Commodity DRAM Leveraging Managed Refresh”,
Michael Jaemin Kim, Jaehyun Park, Yeonhong Park, Wanju Doh, Namhoon Kim, Tae Jun Ham, Jae W. Lee, and Jung Ho Ahn