Hyunsun Hyunsun

Hyunsun (Horace)

  • Seoul, South Korea

Hello.

My name is Hyunsun Chung. I also go by Horace in the English speaking part of the world. Welcome to my obligatory “corner of the internet”.

I’m working to be a well-rounded computer systems engineer in all regards, from operating systems to storage.

With that said, I’m not much of a web design guru, so you’ll have to make do with a template I found lying around.

Anyways, enjoy your time here with the little stuff I’ve got here.

Research Interests

Next generation storage devices

Experimental NAND flash based storage and their operating system/file system support.

Emerging memory device concepts

Tiered memory systems and experimental CXL memory devices.

LLM inference optimization

Attention offloading and smart KV cache reuse.

Education & Work Experience

2025 - present

Sogang University

M.S. in Computer Science and Engineering

Data-Intensive AI Computing & Systems Laboratory, Advised by Youngjae Kim

2019 - 2024

Sogang University

B.S. in Computer Science and Engineering

Graduated Cum Laude

Publications

OpenCXD: An Open Real-Device-Guided Hybrid Evaluation Framework for CXL-SSDs

The 33rd International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS 2025)

H.Chung*, J.Park*, T.Noh, S.Ahn, K.Kim, M.Zhao, Y.Kim

https://ieeexplore.ieee.org/document/11283378

KVAccel: A Novel Write Accelerator for LSM-Tree-Based KV Stores with Host-SSD Collaboration

The 39th IEEE International Parallel and Distributed Processing Symposium (IPDPS 2025)

K.Kim*, H.Chung*, S.Ahn*, J.Park, S.Jamil, H.Byun, M.Lee, J.Choi, Y.Kim

https://ieeexplore.ieee.org/document/11078520/

LLM-Pilot: SLO-Aware and Cost-Efficient LLM Serving on Public Cloud VM Clusters via Offloading

The 26th IEEE International Symposium on Cluster, Cloud, and Internet Computing (CCGrid 2025)

J.Kim, K.Kim, H.Chung, J. Yang, J. Kim, D. Li, Y. Kim

(To Appear)

Cost-Efficient VM Selection for Cloud-Based LLM Inference with KV Cache Offloading

The 18th IEEE International Conference on Cloud Computing (CLOUD 2025)

K.Kim, J.Kim, H.Chung, M.Cha, H.Kim, Y.Kim

https://ieeexplore.ieee.org/document/11120583/

Honor & Awards

2025 - present

LG Electronics

Received a Graduate Scholarship from LG Electronics (Chief Technology Office)

2024 - 2025

Sogang University

Accepted for B.S - M.S Integrated Program and scholarship (one semester)

Languages

English

(Basically) Native (OPIc AL)

Korean

(Somehow) Native (Mother tongue)

Japanese

Barely