I am currently an associate professor at the department of electrical engineering and computer science, DGIST. Before joining DGIST in August 2018, I worked as a research fellow at the University of Michigan, Ann Arbor, MI, USA from October 2016 to July 2018. I received a Ph.D. degree in School of Computing from Korea Advanced Institute of Science and Technology (KAIST) in 2016. My research interests include system design and analysis with timing guarantees and resource management in real-time embedded systems and cyber-physical systems. 

News

• [May 2025] A paper got accepted at RTAS 2025 and won the Best Paper Award!!

• [March 2024] A paper got accepted at DAC 2024.

• [February 2024] A paper got accepted at RTAS 2024.

Publications

<Refereed Papers in International Conference Proceedings>

• Mitigating Resource Contention for Responsive On-device Machine Learning Inferences 

  • Minsung Kim, Jihoon Lee, Seongjin Chou, Whisoo Chung, Inwoo Kim, Woosung Kang, Hyosu Kim, Sangeun Oh, Hoon Sung Chwa, Kilho Lee

  • In 44th IEEE/ACM International Conference on Computer-Aided Design (ICCAD 2025), Munich, Germany, October 2025.

• Masked Autoencoders are Robust Task Offloaders for Timely and Accurate Inference

  • Wonyeong Lee, Seunghoon Lee, Seungyeon Cho, Hyunwoo Koo, Hoon Sung Chwa, Jinkyu Lee

  • In 38th IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS 2025), Hangzhou, China, October 2025.

• CROS-RT: Cross-Layer Priority Scheduling for Predictable Inter-Process Communication in ROS 2 [Slide] [GitHub]

  • Sohyun Kim, Juho Song, Kilho Lee, Sangeun Oh, Hoon Sung Chwa 

  • In 31st IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2025), Irvine, USA, May 2025.

  • Best Paper Award

• Solid State Drive Targeted Memory-Efficient Indexing for Universal I/O Patterns and Fragmentation Degrees

  • Junsu Im, Jeonggyun Kim, Seonggyun Oh, Jinhyung Koo, Juhyung Park, Hoon Sung Chwa, Sam H. Noh, Sungjin Lee 

  • In 20th European Conference on Computer Systems (EuroSys 2025), Rotterdam, Netherlands, April 2025.

• RT-MDM: Real-Time Scheduling Framework for Multi-DNN on MCU Using External Memory

  • Sukmin Kang, Seongtae Lee, Hyunwoo Koo, Hoon Sung Chwa, Jinkyu Lee

  • In 61st ACM/IEEE Design Automation Conference (DAC 2024), San Francisco, USA, June 2024.

• RT-Swap: Addressing GPU Memory Bottlenecks for Real-Time Multi-DNN Inference 

  • Woosung Kang, Jinkyu Lee, Youngmoon Lee, Sangeun Oh, Kilho Lee, Hoon Sung Chwa

  • In 30th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2024), Hong Kong, China, May 2024.

• SPET: Transparent SRAM Allocation and Model Partitioning for Real-time DNN Tasks on Edge TPU 

  • Changhun Han, Hoon Sung Chwa, Kilho Lee, Sangeun Oh

  • In 60th Design Automation Conference (DAC 2023), San Francisco, July 2023.

• RT-MOT: Confidence-Aware Real-Time Scheduling Framework for Multi-Object Tracking Tasks

  • Donghwa Kang, Seunghoon Lee, Hoon Sung Chwa, Seung-Hwan Bae, Chang Mook Kang, Jinkyu Lee, Hyeongboo Baek

  • In 43rd IEEE Real-Time Systems Symposium (RTSS 2022), Houston, USA,  December 2022.

• DNN-SAM: Split-and-Merge DNN Execution for Real-Time Object Detection [Homepage] [PDF] [Slide]

  • Woosung Kang, Siwoo Chung, Jeremy Yuhyun Kim, Youngmoon Lee, Kilho Lee, Jinkyu Lee, Kang G. Shin, Hoon Sung Chwa

  • In 28th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2022), Milano, Italy, May 2022.

• LaLaRAND: Flexible Layer-by-Layer CPU/GPU Scheduling for Real-Time DNN Tasks [Homepage] [PDF] [Slide] [GitHub]

  • Woosung Kang, Kilho Lee, Jinkyu Lee, Insik Shin, Hoon Sung Chwa

  • In 42nd IEEE Real-Time Systems Symposium (RTSS 2021), Dortmund, Germany, December 2021.

• Dynamic Chip Clustering and Task Allocation for Real-time Flash [Homepage] [PDF] [Slide]

  • Gyeongtaek Kim, Sugnjin Lee, Hoon Sung Chwa

  • In 58th Design Automation Conference (DAC 2021), San Francisco, December 2021.

• Necessary Feasibility Analysis for Mixed-Criticality Task Systems on Uniprocessor [PDF]

  • Hoon Sung Chwa, Hyeongboo Baek, Jinkyu Lee

  • In 40th IEEE Real-Time Systems Symposium (RTSS 2019), Hong Kong, December 2019.

• Thermal-Aware Scheduling for Integrated CPUs-GPU platforms [PDF]

  • Youngmoon Lee,  Kang G. Shin, Hoon Sung Chwa

  • In the ACM SIGBED International Conference on Embedded Software (EMSOFT 2019), New York, USA, October 2019.

• Fault-Resilient Real-Time Communication Using Software-Defined Networking [PDF]

  • Kilho Lee, Minsu Kim,  Hayeon Kim,  Hoon Sung Chwa, Jinkyu Lee, Insik Shin

  • In 25th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2019), Montreal, Canada, April  2019.

  • - Acceptance ratio: 30/116=25.9%

• MC-SDN: Supporting Mixed-Criticality Scheduling on Switched-Ethernet Using Software-Defined Networking [PDF] 

  • Kilho Lee, Taejune Park, Minsu Kim, Hoon Sung Chwa, Jinkyu Lee, Seungwon Shin, Insik Shin

  • In 39th IEEE Real-Time Systems Symposium (RTSS 2018), Nashville, TN, USA, December 2018.

  • - Acceptance ratio: 37/166=22.3%

• Thermal-Aware Resource Management for Embedded Real-Time Systems [PDF]

  • Youngmoon Lee, Hoon Sung Chwa, Kang G. Shin, Shige Wang

  • In the ACM SIGBED International Conference on Embedded Software (EMSOFT 2018), Torino, Italy, October 2018.

  • - Acceptance ratio: 27/111=24.3%

• Physical-State-Aware Dynamic Slack Management for Mixed-Criticality Systems [PDF] [Supplement]

  • Hoon Sung Chwa, Kang G. Shin, Hyeongboo Baek, Jinkyu Lee

  • In 24th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2018), Porto, Portugal, April 2018.

• Closing the Gap between Stability and Schedulability: A New Task Model for Cyber-Physical Systems [PDF] [Supplement]

  • Hoon Sung Chwa, Kang G. Shin, Jinkyu Lee

  • In 24th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2018), Porto, Portugal, April 2018.

• Beyond Implicit-Deadline Optimality: A Multiprocessor Scheduling Framework for Constrained-Deadline Tasks [PDF]

  • Hyeongboo Baek, Hoon Sung Chwa, Jinkyu Lee

  • In 38th IEEE Real-Time Systems Symposium (RTSS 2017), Paris, France, December 2017.

  • - Acceptance ratio: 31/131=23.7%

• MC-ADAPT: Adaptive Task Dropping in Mixed-Criticality Scheduling [PDF]

  • Jaewoo Lee, Hoon Sung Chwa, Linh T.X. Phan, Insik Shin, Insup Lee

  • In the ACM SIGBED International Conference on Embedded Software (EMSOFT 2017), Seoul, Korea, October 2017.

• Optimal Real-Time Scheduling on Two-Type Heterogeneous Multicore Platforms [PDF] 

  • Hoon Sung Chwa, Jaebaek Seo, Jinkyu Lee, Insik Shin 

  • In 36th IEEE Real-Time Systems Symposium (RTSS 2015), San Antonio, TX, USA, December 2015. 

  • - Best Paper Runner-up. - Acceptance ratio: 34/151=22.5%

• Scalable Path and Time Coordination for Robot Formation [PDF] 

  • Hoon Sung Chwa, Andrii Shyshkalov, Kilho Lee, Insik Shin 

  • In 2nd IEEE International Conference on Cyber-Physical Systems, Networks, and Applications (CPSNA 2014), Hong Kong, China, August 2014. 

  • - Best Paper Award: one best paper was selected out of 23 submissions. - Acceptance ratio: 9/23=39.1%

• Global EDF Schedulability Analysis for Synchronous Parallel Tasks on Multicore Platforms [PDF] 

  • Hoon Sung Chwa, Jinkyu Lee, Kieu-My Phan, Arvind Easwaran, Insik Shin 

  • In 25th Euromicro Conference on Real-Time Systems (ECRTS 2013), Paris, France, July 2013. 

  • - Acceptance ratio: 27/99=27.3%

• Extending Task-level to Job-level Fixed Priority Assignment and Schedulability Analysis Using Pseudo-deadlines [PDF] 

  • Hoon Sung Chwa, Hyoungbu Back, Sanjian Chen, Jinkyu Lee, Arvind Easwaran, Insik Shin, Insup Lee 

  • In 33rd IEEE Real-Time Systems Symposium (RTSS 2012), San Juan, Puerto Rico, December 2012. 

  • - Best Paper Award: one best paper was selected out of 157 submissions. - Acceptance ratio: 35/157=22.3%

• Schedulability Analysis and Priority Assignment for Global Job-level Fixed-Priority Multiprocessor Scheduling [PDF] 

  • Hyoungbu Back, Hoon Sung Chwa, Insik Shin 

  • In 8th IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS 2012, in conjunction with CPSWeek 2012), Beijing, China, April 2012. 

  • - Acceptance ratio: 30/127=23.6%

   <Referred Papers in International Journals>

• Timing Guarantees for Inference of AI Models in Embedded Systems

  • Seunghoon Lee, Woosung Kang, Marko Bertogna, Hoon Sung Chwa, Jinkyu Lee

  • Real-Time Systems (RTSJ), Volume 61, Issue 2, pp. 259--267,  June 2025.

• An Integrated Network-Computing Load Balancing Simulator for VEC-Assisted Autonomous Vehicles

  • Jeongho Kwak, Hoon Sung Chwa, Han-Shin Jo, Wonyul Kang, Jeonghwan Kim, Juho Song, Seoungjae Lee, Taesik Nam, Jeeyoo Kim, Wonwoo Seong, and Ji-Woong Choi 

  • To appear in IEEE Communications Magazine, March 2025.

• Tight Necessary Feasibility Analysis for Recurring Real-Time Tasks on a Multiprocessor   

  • Hoon Sung Chwa and Jinkyu Lee

  • Journal of Systems Architecture, Volume 135, February 2023.

• AdaptiveHART: An Adaptive Real-Time MAC Protocol for Industrial Internet-of-Things   

  • Sihoon Moon, Hyungseok Park, Hoon Sung Chwa, and Kyung-Joon Park

  • IEEE Systems Journal, Volume 16, Issue 3, pp. 4849--4860, September 2022.

• Necessary Feasibility Analysis for Mixed-Criticality Real-Time Embedded Systems [PDF]  

  • Hoon Sung Chwa, Hyeongboo Baek, and Jinkyu Lee  

  • IEEE Transactions on Parallel and Distributed Systems (TPDS), Volume 33, Issue 7, pp. 1520--1537, July 2022.

• Infeasibility Test for Fixed-Priority Scheduling on Multiprocessor Platforms [PDF]  

  • Hoon Sung Chwa and Jinkyu Lee  

  • IEEE Embedded Systems Letters, Volume 14, Issue 2, pp. 55--58, June 2022.

• JMC: Jitter-based Mixed-Criticality Scheduling for Distributed Real-Time Systems [PDF]   

  • Kilho Lee, Minsu Kim, Hayeon Kim, Hoon Sung Chwa, Jaewoo Lee, Jinkyu Lee, and Insik Shin  

  • IEEE Internet of Things Journal (IoT-J), Volume 6, Issue 4, pp. 6310--6324, August 2019.

• MC-SDN: Supporting Mixed-Criticality Real-Time Communication Using Software-Defined Networking [PDF] 

  • Kilho Lee, Minsu Kim, Taejune Park, Hoon Sung Chwa, Jinkyu Lee, Seungwon Shin, and Insik Shin   

  • IEEE Internet of Things Journal (IoT-J), Volume 6, Issue 4, pp. 6325--6344, August 2019. 

  • - Extended version of RTSS 2018 

• Non-Preemptive Scheduling for Mixed-Criticality Real-Time Multiprocessor Systems [PDF]

  • Hyeongboo Baek, Namyong Jung, Hoon Sung Chwa, Insik Shin, and Jinkyu Lee 

  • IEEE Transactions on Parallel and Distributed Systems (TPDS), Volume 29, Issue 8, pp. 1766-1779, August 2018.

• MC-ADAPT: Adaptive Task Dropping in Mixed-Criticality Scheduling [PDF]

  • Jaewoo Lee, Hoon Sung Chwa, Linh T.X. Phan, Insik Shin, Insup Lee

  • ACM Transactions on Embedded Computing Systems (TECS), Volume 16, Issue 5s, Article No. 163 (the special issue of EMSOFT 2017), October 2017.

• Global EDF Schedulability Analysis for Parallel Tasks on Multicore Platforms [PDF] 

  • Hoon Sung Chwa, Jinkyu Lee, Jiyeon Lee, Kieu-My Phan, Arvind Easwaran, and Insik Shin 

  • IEEE Transactions on Parallel and Distributed Systems (TPDS), Volume 28, Issue 5, pp. 1331-1345, May 2017.

• GPU-SAM:Leaveraging Multi-GPU Split-and-Merge Execution for System-wide Real-Time Support[PDF] 

  • Wookhyun Han, Hoon Sung Chwa, Hwidong Bae, Hyosu Kim, Insik Shin 

  • Journal of Systems and Software (JSS), Volume 117, pp. 1-14, July 2016.

• Thread-level Priority Assignment in Global Multiprocessor Scheduling for DAG Tasks [PDF] 

  • Jiyeon Lee, Hoon Sung Chwa, Jinkyu Lee, Insik Shin 

  • Journal of Systems and Software (JSS), Volume 113, pp. 246-256, March 2016.

• Capturing Urgency and Parallelism Using Quasi-Deadlines for Real-Time Multiprocessor Scheduling[PDF] 

  • Hoon Sung Chwa, Hyoungbu Back, Jinkyu Lee, Kieu-My Phan, Insik Shin 

  • Journal of Systems and Software (JSS), Volume 101, pp. 15-29, March 2015.

   <Theses>

• Advancing Multi-core Scheduling for Real-time Embedded Systems 

  • Hoon Sung Chwa 

  • Ph.D. Thesis, School of Computing, KAIST, South Korea, February 2016. 

  • - Outstanding Ph.D. Thesis Award.

• Adaptive Trajectory Planning for Scalable Multiple Robot Control 

  • Hoon Sung Chwa 

  • M.S. Thesis, Department of Computer Science, KAIST, South Korea, February 2011.

   <Other Papers>

• Towards Compositional Mixed-Criticality Real-Time Scheduling in Open Systems [PDF] 

  • Jaewoo Lee, Hoon Sung Chwa, Arvind Easwaran, Insik Shin, Insup Lee 

  • In 8th International Workshop on Compositional Theory and Technology for Real-Time Embedded Systems (CRTS 2015), San Antonio, USA, December 2015.

• Towards Energy and Feasibility Optimal Scheduling on big.LITTLE platforms [PDF] 

  • Hoon Sung Chwa, Jaebaek Seo, Hyuck Yoo, Jinkyu Lee, Insik Shin 

  • In 6th Real-Time Scheduling Open Problems Seminar (RTSOPS 2015), Lund, Sweden, July 2015.

• Supporting Single-GPU Abstraction threough Transparent Multi-GPU Execution for Real-Time Guarantees [PDF] 

  • Wookhyun Han, Hoon Sung Chwa, Hwidong Bae, Hyosu Kim, Insik Shin 

  • In 7th International Workshop on Compositional Theory and Technology for Real-Time Embedded Systems (CRTS 2014), Rome, Italy, December 2014.

News - archive 

• [March 2023] A paper got accepted at DAC 2023.

• [December 2022] A paper got accepted at JSA.

• [October 2022] A paper got accepted at IEEE RTSS 2022.

• [March 2022] A paper got accepted at IEEE RTAS 2022.

• [October 2021] A paper got accepted at IEEE RTSS 2021.

• [October 2021] A paper got accepted at IEEE Transactions on Parallel and Distributed Systems (TPDS).

• [September 2021] A paper got accepted at IEEE Embedded Systems Letters.

• [February 2021] A paper got accepted at DAC 2021.

• [August 2019] A paper got accepted at RTSS 2019.

• [July 2019] A paper got accepted at EMSOFT 2019.

• [May 2019] Two papers got accepted at IEEE Internet of Things Journal.

• [January 2019] A paper got accepted at RTAS 2019.

• [September 2018] A paper got accepted at RTSS 2018.

• [August 2018] Hoon Sung Chwa joined DGIST.

• [July 2018] A paper got accepted at EMSOFT 2018. 

• [February 2018] A paper got accepted at IEEE TPDS. 

• [December 2017] Two papers got accepted at RTAS 2018.

• [December 2017] A paper was presented at RTSS 2017.

• [October 2017] A paper was presented at EMSOFT 2017.

• [October 2016] Hoon Sung Chwa joined Real-Time Computing Lab., Electrical Engineering and Computer Science, the University of Michigan, Ann Arbor, MI, USA, working with Prof. Kang G. Shin.

• [March 2016] Hoon Sung Chwa was a postdoctoral researcher at KAIST.

• [February 2016] Hoon Sung Chwa received a Ph.D. degree.

• [December 2015] Hoon Sung Chwa presented the paper "Optimal Real-Time Scheduling on Two-Type Heterogeneous Multicore Platforms" at RTSS 2015.

• [December 2015] Hoon Sung Chwa presented the paper "Towards Compositional Mixed-Criticality Real-Time Scheduling in Open Systems" at CRTS 2015.

• [July 2015] Hoon Sung Chwa presented the paper "Towards Energy and Feasibility Optimal Scheduling on big.LITTLE platforms" at RTSOPS 2015.

• [December 2014] Hoon Sung Chwa presented the paper "Supporting Single-GPU Abstraction threough Transparent Multi-GPU Execution for Real-Time Guarantees" at CRTS 2014.

• [August 2014] Hoon Sung Chwa presented the paper "Scalable Path and Time Coordination for Robot Formation" at CPSNA 2014 and won the Best Paper Award.

• [July 2013] Hoon Sung Chwa presented the paper "Global EDF Schedulability Analysis for Synchronous Parallel Tasks on Multicore Platforms" at ECRTS 2013.

• [December 2012] Hoon Sung Chwa presented the paper "Extending Task-level to Job-level Fixed Priority Assignment and Schedulability Analysis Using Pseudo-deadlines" at RTSS 2012) and won the Best Paper Award; one best paper was selected out of 157 submissions.

Last update: August 2025.