Hongsu Byun

Research Interest

• Key-Value Store, Database, Storage System

• In-Storage Processing, Computational Storage

• Filesystem, Linux Kernel, Operating System

Education

• Ph.D. in Computer Science and Engineering, Sogang University

  • Mar. 2021 – Feb. 2026, Seoul, Korea

  • Advisors: Prof. Sungyong Park and Prof. Youngjae Kim

  • Dissertation: Design of High-Performance LSM-tree based Key-Value Store

• B.S. in Computer Science and Engineering, Sogang University

  • Mar. 2015 – Feb. 2021, Seoul, Korea
    (Including Mandatory Military Service, Rebublic of Korea Army, Dec. 2016 – Sep. 2018)

Selected Publications (Full Publication List) 

• QUICKTOPIA: Iteration-Level GPU Frequency Control for Energy–Latency Co-Optimization in LLM Inference,
  Soyang Baek, Bodon Jeong, Hongsu Byun, Sungyong Park,
  In Proceedings of the IEEE International Symposium on Cluster, Cloud and Grid Computing (CCGRID) (2026), Sydney, Australia, 18-21 May, 2026. (Acceptance Rate: 62/247 = 25.1%)

• PACMAN: Power Usage-Aware Capping  and Management for All-Flash Storage Servers,
  Bodon Jeong, Hongsu Byun, Kyungkeun Lee, Bumjun Kim, Jeong-Uk Kang, Sungyong Park, 
  In Proceedings of the International Symposium on Modeling, Analysis and Simulation of Computer and Telecommunication Systems (MASCOTS), October 21-23, 2025. (Acceptance rate: 24%)

• Revisiting Multi-threaded Compaction in LSM-trees: Enabling Compaction Pipelining,
  Hongsu Byun*, Honghyeon Yoo, Sungyong Park (*Co-first author with Honghyeon Yoo),
  In Proceedings of the International Conference on Parallel Processing (ICPP) (2025), San Diego, CA, USA, September 8-11, 2025.
  (Acceptance rate: 78/292 = 26.7%) [online][pdf][talk][news]

• ECO-KVS: Energy-aware Compaction Offloading Mechanism for LSM-tree based Key-Value Stores in Edge Federation,
  Jeeseob Kim, Hongsu Byun*, Seungjae Lee, Myoungjoon Kim, Youngjae Kim, Zaipeng Xie, Sungyong Park (*Co-first author with Jeeseob Kim),
  In Proceedings of the IEEE International Symposium on Cluster, Cloud and Grid Computing (CCGRID) (2025), Tromsø, Norway, May, 2025. (Sustainable IT Systems Track Acceptance rate: 6/31 = 19.3%, Overall Acceptance Rate: 55/219 = 25.1%) [pdf] [talk] [news]

• KVAccel: A Novel Write Accelerator for LSM-Tree-Based KV Stores with Host-SSD Collaboration,
  KiHwan Kim, Hyunsun Chung, Seonghoon Ahn, Junhyeok Park, Safdar Jamil, Hongsu Byun, Myungcheol Lee, Jinchun Choi, Youngjae Kim,
  In Proceedings of the IEEE International Parallel and Distributed Processing Symposium (IPDPS) (2025), Milan, Italy, June 3-7, 2025. [pdf] [talk],
  Hardware Architecture (cs.AR), 11 pages, arXiv:2410.21760 [cs.CR], October 29, 2024. [arXiv]

• Refining Compaction Offloading I/O Stack for LSM-based Key-value Stores with SPDK,
  Honghyeon Yoo, Hongsu Byun*, Sungyong Park (*Co-first author with Honghyeon Yoo),
  In Proceedings of the IEEE International Conference on Cluster Computing (IEEE CLUSTER) (Poster) (2024), September 2024. [online][pdf]

• Coordinating Compaction between LSM-tree based Key-Value Stores for Edge Federation,
  Jeeseob Kim, Honghyeon Yoo, Seungjae Lee, Hongsu Byun†, Sungyong Park (†Co-corresponding author with Prof. Sungyong Park),
  In Proceedings of the IEEE International Conference on Cloud Computing (IEEE CLOUD) (2024),  July 2024. (Acceptance rate: 19.4%) [online][pdf][news]

• An Analytical Model-based Capacity Planning Approach for Building CSD-based Storage Systems,
  Hongsu Byun, Safdar Jamil, Jungwook Han, Sungyong Park, Myungcheol Lee, Changsoo Kim, Beongjun Choi, Youngjae Kim,
  ACM Transactions on Embedded Computing Systems (TECS) (2024), Vol.23, Issue 6, No. 92, pp. 1-25, November 2024 (online, September 2023). [online][pdf] [news]

• Scalable Filesystem : High-performance Linux Filesystem and Open-source Kafka-based Streaming Big Data Processing Service [video]

Work Experience

• Jul. 2022 – Aug. 2022, Visiting Student at Oak Ridge National Laboratory, TN, USA