Jiwon Lee

About Me

📍 Suwon, South Korea

📧 jiwon24.lee at gmail.com

📧 jiwon.lee at yonsei.ac.kr

I completed my Ph.D. at Yonsei University under the supervision of Professor Won Woo Ro, with a dissertation titled 'High-Performance Address Translation Mechanisms for Graphics Processing Units.' My research interests span a broad range of topics within computer architecture and systems. During my graduate studies, my primary research focus was on designing high-performance address translation methods for GPUs. In addition, I co-authored several research papers on topics such as enhancing hashed page tables, designing efficient CPU microarchitectures, improving memory management methods for unified virtual memory in GPUs, multi-GPU systems, and memory expansion modules. After gaining industry experience, I will join Uppsala University as a Postdoctoral Researcher starting in Feb. 2026, where I plan to broaden my research beyond my Ph.D. focus.

Professional Experience

Postdoctoral Researcher Starting Feb. 2026

Uppsala University, Department of Information Technology, Uppsala, Sweden

Division of Computer Systems

Uppsala Architecture Research Team

Advisors: Professor David Black-Schaffer; Professor Chang Hyun Park

Staff Engineer Sept. 2024 – Oct. 2025

Samsung Electronics, Memory Division, South Korea

Graduate Research Assistant Mar. 2018 – Aug. 2024

Yonsei University, School of Electrical and Electronic Engineering, Seoul, South Korea

Embedded Systems and Computer Architecture Lab (eSCaL)

Advisor: Professor Won Woo Ro

Education

Ph.D. in Electrical and Electronic Engineering Mar. 2018 – Aug. 2024

Yonsei University, Seoul, South Korea

Dissertation: "High-Performance Address Translation Mechanisms for Graphics Processing Units."

Bachelor of Science in Electrical and Electronic Engineering Mar. 2014 – Feb. 2018

Yonsei University, Seoul, South Korea

Publications

REDIT: Redirection-Enabled Memory-Side Directory Architecture for CXL Memory Fabric [DOI]
Minjae Kim, Jiwan Kim, Won Hur, Jiwon Lee, Mingu Jung, Cheolhwan Kim, Ipoom Jeong, and Won Woo Ro
IEEE Computer Architecture Letters (CAL), 2025.

Understanding Distributed Training of Large Language Models with Unified Virtual Memory
Jane Rhee, Eunbi Jeong, Jiwon Lee, and Myung Kuk Yoon
IEEE International Symposium on Workload Characterization (IISWC), 2025.

LATPC: Accelerating GPU Address Translation Using Locality-Aware TLB Prefetching and MSHR Compression [DOI]
Yeonan Ha, Jiho Park, Hanna Cha, Jiwon Lee, Joonsung Kim, Won Woo Ro, and Youngsok Kim
IEEE/ACM International Symposium on Microarchitecture (MICRO), 2025.

Heliostat: Harnessing Ray Tracing Accelerators for Page Table Walks [DOI]
Yuan Feng, Yuke Li, Jiwon Lee, Won Woo Ro, and Hyeran Jeon
IEEE/ACM International Symposium on Computer Architecture (ISCA), 2025.

COSMOS: An LLC Contention Slowdown Model for Heterogeneous Multi-core Systems [DOI]
Yongju Lee, Jaewon Kwon, Cheolhwan Kim, Enhyuk Jang, Jiwon Lee, Hyunwuk Lee, and Won Woo Ro
IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS), 2025.

HashScape: Leveraging Virtual Address Dynamics for Efficient Hashed Page Tables [DOI]
Won Hur, Jiwon Lee, Jaewon Kwon, Minjae Kim, and Won Woo Ro
IEEE Transactions on Computers (TC), 2025.

Marching Page Walks: Batching and Concurrent Page Table Walks for Enhancing GPU Throughput [DOI]
Jiwon Lee*, Gun Ko, Myung Kuk Yoon, Ipoom Jeong, Yunho Oh, and Won Woo Ro
IEEE International Symposium on High-Performance Computer Architecture (HPCA), 2025.

REC: Enhancing Fine-Grained Cache Coherence Protocol in Multi-GPU Systems [DOI]
Gun Ko, Jiwon Lee, Hongju Kal, Hyunwuk Lee, and Won Woo Ro
Journal of Systems Architecture (JSA), Vol. 160, 103339, Mar. 2025.

Geneva: A Dynamic Confluence of Speculative Execution and In-Order Commitment Windows [DOI]
Yanghee Lee, Jiwon Lee, Jaewon Kwon, Yongju Lee, and Won Woo Ro
IEEE/ACM Design Automation Conference (DAC), 2024.

SnakeByte: A TLB Design with Adaptive and Recursive Page Merging in GPUs [DOI]
Jiwon Lee*, Ju Min Lee, Yunho Oh, William J. Song, and Won Woo Ro
IEEE International Symposium on High-Performance Computer Architecture (HPCA), 2023.

Early-Adaptor: An Adaptive Framework for Proactive UVM Memory Management [DOI]
Seokjin Go, Hyunwuk Lee, Junsung Kim, Jiwon Lee, Myung Kuk Yoon, and Won Woo Ro
IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS), 2023.

Analysis on Memory Access Patterns of Server-Class Workloads in Page- and Cache Line- Granularity
Kyeonghoon Lim, Minjae Kim, Jiwon Lee, and Won Woo Ro
International Conference on Electronics, Information, and Communication (ICEIC), 2023.

Performance Analysis of Criticality-Aware Out-of-Order Cores for Exploiting MLP [DOI]
Yanghee Lee, Jiwon Lee, and Won Woo Ro
International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC), 2023.

Adaptive Data Prefetcher with Probability Learning in LLC [DOI]
Jusin Kim, Jiwon Lee, and Won Woo Ro
International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC), 2023.

Reconstructing Out-of-Order Issue Queue [DOI]
Ipoom Jeong, Jiwon Lee, Myung Kuk Yoon, and Won Woo Ro
IEEE/ACM International Symposium on Microarchitecture (MICRO), 2022.

Analysis of DRAM-based Network of DRAM Swap Space Adopting Latency Hiding Technique [DOI]
Hyoseong Choi, Jiwon Lee, Jeonghoon Choi, and Won Woo Ro
International Technical Conference on Circuits/Systems, Computers and Communications (ITC-CSCC), 2022.

PIMCaffe: Functional Evaluation of a Machine Learning Framework for In-Memory Neural Processing Unit [DOI]
Won Jeon, Jiwon Lee, Dongseok Kang, Hongju Kal, and Won Woo Ro
IEEE Access, Vol. 9, pp. 96629–96640, Jul. 2021.

Chapter Six – Deep learning with GPUs [DOI]
Won Jeon, Gun Ko, Jiwon Lee, Hyunwuk Lee, Dongho Ha, and Won Woo Ro
Advances in Computers, Vol. 122, pp. 167–215, 2021.

Patents

Memory management unit and method of walking page table [Link: US, CN, KR]
Won Woo Ro, Jiwon Lee, Ipoom Jeong, Hongju Kal, Gun Ko, and Hyunwuk Lee
US 18/502,058, CN 202311700848.0, KR 10-2022-0175909

Swap memory device providing data and data block, method of operating the same, and method of operating electronic device including the same [Link: US, CN, KR]
Won Woo Ro, Hyoseong Choi, Jiwon Lee, and Jeonghoon Choi
US 18/350,148, CN 202311408257.6, KR 10-2022-0145399

Controller, computing system including the same, and method of creating and searching page table entry for the same [Link: US, CN, KR]
Seongil O, Won Woo Ro, William Jinho Song, and Jiwon Lee
US 17/526,391, CN 202210082121.X, KR 10-2021-0054195

Computing device and method of operating the same
Won Woo Ro, Minjae Kim, Kyeonghoon Lim, and Jiwon Lee
KR 10-2023-0193178

Memory management apparatus and method for UVM
Won Woo Ro, Seokjin Go, Junsung Kim, Hyunwuk Lee, and Jiwon Lee
KR 10-2023-0076606

Neural network processing method
Won Woo Ro, Hongju Kal, Cheonjun Park, Hyunwuk Lee, Ipoom Jeong, and Jiwon Lee
KR 10-2022-0041848

List of Ongoing Research

Efficient Memory Management of Large-Scale Memory Space (Under Review)
Accelerating Sparse Matrix Computations
Application of IOMMU Specifications
Identifying Bottlenecks in Serverless Environments
Analysis on Different Sparse Matrix Formats

Projects

Development of High Performance Multi-GPU Memory System, National Research Foundation of Korea (NRF), Mar. 2021 – Feb. 2024
Development and Application of DRAM-based Memory Hierarchies, Samsung Electronics, Sept. 2020 – Aug. 2023
Programmable Neural Network Processors, Samsung Research Funding and Incubation Center for Future Technology, June 2018 – May 2022
PIM Core Technology and System Development for Data-intensive Applications, Samsung Electronics, Mar. 2018 – Mar. 2020
Development of Reconfigurable Artificial Neural Network Accelerator and Instruction Set Architecture, Korea Electronics Technology Institute (KETI), Mar. 2018 – Feb. 2019

Academic Activities

Academic Service

External Review Committee, ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), Summer Cycle 2026
Reviewer, ACM Transactions on Architecture and Code Optimization (TACO), 2025

Mentorship

Embedded Systems and Computer Architecture Lab, Yonsei University
Industry–Academic Mentoring Program, 2024
Intelligence System and Parallel Computer Architecture Lab, Ewha Womans University
Industry–Academic Mentoring Program, 2025

Teaching Assistant

EEE6611, System Design and Applications Lab, Yonsei University, Fall 2019
EEE4473, Embedded System Lab, Yonsei University, Spring 2019
EEE3535, Operating Systems, Yonsei University, Fall 2018

Scholarships and Awards

Memory Division Graduate Fellowship, Samsung Electronics, Sept. 2023 – Aug. 2024
Excellent Graduate Researcher Scholarship, Yonsei University, Feb. 2023
National Scholarship for Science and Engineering, Korea Student Aid Foundation (KOSAF), Mar. 2014 – Feb. 2018
Academic Excellence Award, Yonsei University, Spring 2014

After Hours

Outside of research, I enjoy playing the electric guitar and listening to guitar-driven music. I often rehearse and play cover songs with old bandmates from university, and we've had some great times practicing together in rehearsal studios. When I'm alone, I usually pick a song to practice on my own. Being a big fan of rock and heavy metal, my choices tend to be technically demanding and often take months to master. But when I finally get through them, it's always a very rewarding experience. On top of that, I've also been exploring a broader range of music—from Korean indie bands like Decadent and Life and Time to genres such as fusion and blues. Currently, I'm working on The Lights Behind You by SURL. This variety helps me stay inspired and continuously expand my musical vocabulary.

Photo of me playing an electric guitar on a stage — Me playing on stage
in Sept. 2018

Photo of my 12-year old electric guitar and amp — My 12-year-old
guitar and amp