Heechul Yun (윤희철)

office1 (ITTC): 356 Nichols Hall, 2335 Irving hill Rd, Lawrence, KS, 66045
office2 (Eaton): 3040 Eaton Hall, 1520 West 15th St, Lawrence, KS, 66045
e-mail: heechul.yun (at) ku.edu
tel: 785-864-7735

Papers

[J] Journal; [C] Conference; [W] Workshop; [O] Others (Preprint, WIP, etc.)

2024

[C] Connor Sullivan, Alex Manley, Mohammad Alian, Heechul Yun. Per-Bank Bandwidth Regulation of Shared Last-Level Cache for Real-Time Systems. IEEE Real-Time Systems Symposium (RTSS), December 2024. (Accepted) [paper]
[C] Mohammed Misbah Zarrar, Qitao Weng, Bakhbyergyen Yerjan, Ahmet Soyyigit, and Heechul Yun. TinyLidarNet: 2D Lidar-based End-to-End Deep Learning Model for F1TENTH Autonomous Racing. IEEE/RSJ International Conference on Intelligent Robots and Systems (IROS), October 2024 (Accepted) [paper] [arXiv] [code]
[C] Ahmet Soyyigit, Shuochao Yao and Heechul Yun. VALO: A Versatile Anytime Framework for LiDAR based Object Detection Deep Neural Networks. ACM/IEEE Intl. Conference on Embedded Software (EMSOFT), October 2024 [paper] [code]
[W] Heechul Yun. Understanding and Mitigating Hardware Interference Channels on Heterogeneous Multicore. IEEE 3rd Real-Time and Intelligent Edge Computing Workshop (RAGE) May 2024. (Invited) [slides] [paper]
[J] Michael Bechtel, Heechul Yun. Analysis and Mitigation of Shared Resource Contention on Heterogeneous Multicore: An Industrial Case Study. IEEE Transactions on Computers, 2024. [paper]
[J] Shengzhong Liu, Shuochao Yao, Xinzhe Fu, Rohan Tabish, Simon Yu, Ayoosh Bansal, Heechul Yun, Lui Sha, and Tarek Abdelzaher. Taming Algorithmic Priority Inversion in Mission-Critical Perception Pipelines. Communications of the ACM, vol. 67-2, 2024 [paper]
[C] Heechul Yun, Ahmet Soyyigit, Qitao Weng, Shawn Keshmiri, Pavithra Prabhaker, Nelson Brown. Anytime Perception and Control for Safe and Intelligent Urban Air Mobility. AIAA SciTech, January 2024 [paper]

2023

[O] Heechul Yun. Understanding and Mitigating Hardware Interference Channels on Heterogeneous Multicore. December 2023. [slides]
[C] Eric Seals, Michael Bechtel, Heechul Yun. BandWatch: A System-Wide Memory Bandwidth Regulation System for Heterogeneous Multicore. IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA), August 2023 [paper] [slides]
[O] Michael Bechtel, Heechul Yun. Analysis and Mitigation of Shared Resource Contention on Heterogeneous Multicore: An Industrial Case Study. arXiv preprint (arXiv:2304.13110), August 2023. [paper] [arXiv]
[O] Heechul Yun. Understanding Hardware Interference Channels in Multicore. July 2023. [slides]
[C] Michael Garrett Bechtel and Heechul Yun. Cache Bank-Aware Denial-of-Service Attacks on Multicore ARM Processors. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), May 2023. [paper] [slides] [code]
[C] Johnson Umeike, Neel Patel, Alex Manley, Amin Mamandipoor, Heechul Yun and Mohammad Alian. Profiling an Architectural Simulator. IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS), April 2023. [paper]

2022

[C] Ahmet Soyyigit, Shuochao Yao and Heechul Yun. Anytime-Lidar: Deadline-aware 3D Object Detection. IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA), 2022 [paper] [slides] [code]
[C] Michael Bechtel, Qitao Weng and Heechul Yun. DeepPicarMicro: Applying TinyML to Autonomous Cyber Physical Systems. IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA), 2022 [paper] [slides] [code] [hackers.io]
[C] Parul Sohal, Michael Bechtel, Renato Mancuso, Heechul Yun, Orran Krieger. A Closer Look at Intel Resource Director Technology (RDT). International Conference on Real-Time Networks and Systems (RTNS), 2022 [paper]
[C] Michael Garrett Bechtel and Heechul Yun. Denial-of-Service Attacks on Shared Resources in Intel’s Integrated CPU-GPU Platforms. IEEE International Symposium on Real-Time Distributed Computing (ISORC), 2022 [paper] [code]
[J] Jacob Fustos, Michael Bechtel, Heechul Yun. A Framework for Leaking Secrets to Past Instructions. Journal of Cryptographic Engineering, 2022 [paper] [code]

2021

[J] Michael Garrett Bechtel and Heechul Yun. Memory-Aware Denial-of-Service Attacks on Shared Cache in Multicore Real-Time Systems. IEEE Transactions on Computers, 2021. [paper] [code]
[J] Shengzhong Liu, Shuochao Yao, Xinzhe Fu, Huajie Shao, Rohan Tabish, Simon Yu, Ayoosh Bansal, Heechul Yun, Lui Sha, Tarek Abdelzaher. Real-Time Task Scheduling for Machine Perception in In Intelligent Cyber-Physical Systems. IEEE Transactions on Computers, 2021
[J] Rohan Tabish, Jen-Yang Wen, Rodolfo Pellizzoni, Renato Mancuso, Heechul Yun, Marco Caccamo, Lui Raymond Sha. An analyzable inter-core communication framework for high-performance multicore embedded systems. Journal of Systems Architecture, 2021
[C] Waqar Ali, Rodolfo Pellizzoni, Heechul Yun. Virtual Gang based Scheduling of Parallel Real-Time Tasks. Design, Automation and Test in Europe Conference (DATE), February 2021. [paper] [slides] [code]

2020

[C] Shengzhong Liu, Shuochao Yao, Xinzhe Fu, Rohan Tabish, Simon Yu, Ayoosh Bansal, Heechul Yun, Lui Sha and Tarek Abdelzaher. On Removing Algorithmic Priority Inversion from Mission-critical Machine Inference Pipelines. IEEE Real-Time Systems Symposium (RTSS), December 2020. (Best Paper Award)
[W] Jacob Fustos, Michael Garrett Bechtel, Heechul Yun. SpectreRewind: Leaking Secrets to Past Instructions. Workshop on Attacks and Solutions in Hardware Security (ASHES), 2020. [paper] [slides] [arXiv] [code]
[C] Homa Aghilinasab, Waqar Ali, Heechul Yun, Rodolfo Pellizzoni. Dynamic Memory Bandwidth Allocation for Real-Time GPU-Based SoC Platforms. ACM/IEEE Intl. Conference on Embedded Software (EMSOFT), September 2020
[C] Rohan Tabish, Jen-Yang Wen, Rodolfo Pellizzoni, Renato Mancuso, Heechul Yun, Marco Caccamo and Lui Sha. SCE-Comm: A Real-Time Inter-Core Communication Framework for Strictly Partitioned Multi-core Processors. Mediterranean Conference on Embedded Computing (MECO), June 2020
[C] Farzad Farshchi, Qijing Huang, and Heechul Yun. BRU: Bandwidth Regulation Unit for Real-Time Multicore Processors. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), April 2020. [paper] [slides] [code]
[O] Michael Garrett Bechtel and Heechul Yun. Memory-Aware Denial-of-Service Attacks on Shared Cache in Multicore Real-Time Systems, arXiv preprint, arXiv:2005.10864, 2020. [arXiv]
[O] Michael Garrett Bechtel and Heechul Yun. (Poster) Exploiting DRAM Bank Mapping and HugePages for Effective Denial-of-Service Attacks on Shared Cache in Multicore. Hot Topics in the Science of Security (HotSoS), September, 2020.
[O] Waqar Ali, Rodolfo Pellizzoni, Heechul Yun. Virtual Gang based Scheduling of Real-Time Tasks on Multicore Platforms, arXiv preprint arXiv:1912.10959, 2020. [arXiv]

2019

[W] Heechul Yun. Micro-Architectural Attacks on Cyber-Physical Systems. Real-Time Scheduling Open Problems Seminar (RTSOPS), July 2019 [slides]
[W] Waqar Ali, Michael Garrett Bechtel and Heechul Yun. Analyzable and Practical Real-Time Gang Scheduling on Multicore Using RT-Gang. Workshop on Operating Systems Platforms for Embedded Real-Time applications (OSPERT), July 2019. [paper] [slides]
[C] Renato Mancuso, Heechul Yun, Isabelle Puaut. Impact of DM-LRU on WCET: a Static Analysis Approach. Euromicro Conference on Real-Time Systems (ECRTS), July 2019 [paper] [slides]
[C] Jacob Michael Fustos, Farzad Farshchi, and Heechul Yun. SpectreGuard: An Efficient Data-centric Defense Mechanism against Spectre Attacks. Design Automation Conference (DAC), June 2019. [paper] [slides] [code]
[C] Waqar Ali and Heechul Yun. RT-Gang: Real-Time Gang Scheduling Framework for Safety-Critical Systems. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), April 2019. [paper] [arXiv] [slides] [code]
[C] Michael Garrett Bechtel and Heechul Yun. Denial-of-Service Attacks on Shared Cache in Multicore: Analysis and Prevention. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), April 2019. [paper] [arXiv] [slides] [code] [data] (Outstanding Paper Award)
[W] Farzad Farshchi, Qijing Huang, and Heechul Yun. Integrating NVIDIA Deep Learning Accelerator (NVDLA) with RISC-V SoC on FireSim. Workshop on Energy Efficient Machine Learning and Cognitive Computing for Embedded Applications (EMC^2), February 2019. [paper] [slides] [code]

2018

[C] Michael Garrett Bechtel, Elise McEllhiney, Minje Kim, Heechul Yun. DeepPicar: A Low-cost Deep Neural Network-based Autonomous Car. IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA), 2018 [paper] [arXiv] [code] [video] [poster]
[C] Waqar Ali, Heechul Yun. Protecting Real-Time GPU Kernels on Integrated CPU-GPU SoC Platforms. Euromicro Conference on Real-Time Systems (ECRTS), 2018 [paper] [slides] [code]
[C] Farzad Farshchi, Prathap Kumar Valsan, Renato Mancuso, Heechul Yun. Deterministic Memory Abstraction and Supporting Multicore System Architecture. Euromicro Conference on Real-Time Systems (ECRTS), 2018 [paper] [slides] [code]

2017

[J] Prathap Kumar Valsan, Heechul Yun, Farzad Farshchi. Addressing Isolation Challenges of Non-blocking Caches for Multicore Real-Time Systems. Real-time Systems Journal, Vol: 53, Issue: 5, pp: 673–708, 2017. [paper]
[J] Heechul Yun, Waqar Ali, Santosh Gondi, Siddhartha Biswas. BWLOCK: A Dynamic Memory Access Control Framework for Soft Real-Time Applications on Multicore Platforms. IEEE Transactions on Computers (TC), Vol: 66, Issue: 7, pp: 1247-1252, 2017. [paper] [code]
[W] Waqar Ali, Heechul Yun, Work-In-Progress: Protecting Real-Time GPU Applications on Integrated CPU-GPU SoC Platforms. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium Work-In-Progress (RTAS-WIP), IEEE, 2017.

2016

[C] Prasanth Vivekanandan, Gonzalo Garcia, Heechul Yun, Shawn Keshmiri. A Simplex Architecture for Intelligent and Safe Unmanned Aerial Vehicles. IEEE International Conference on Embedded and Real-Time Computing Systems and Applications (RTCSA), IEEE, 2016. [paper] [slides] (Best Student Paper Nominee)
[C] Prathap Kumar Valsan, Heechul Yun, Farzad Farshchi. Taming Non-blocking Caches to Improve Isolation in Multicore Real-Time Systems. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), IEEE, 2016. [paper] [slides] [code] (Best Paper Award and Outstanding Paper Award)
[C] Rodolfo Pellizzoni, Heechul Yun. Memory Servers for Multicore Systems. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), IEEE, 2016. [paper] [slides]
[J] Lui Sha, Marco Caccamo, Renato Mancuso, Jung-Eun Kim, Man-Ki Yoon, Rodolfo Pellizzoni, Heechul Yun, Russell Kegley, Dennis Perlman, Greg Arundale, Richard Bradford. Real-Time Computing on Multicore Processors. IEEE Computer, 2016 [paper]
[J] Heechul Yun, Gang Yao, Rodolfo Pellizzoni, Marco Caccamo, Lui Sha. Memory Bandwidth Management for Efficient Performance Isolation in Multi-core Platforms. IEEE Transactions on Computers (TC), 2016. [paper] [video] (Editor's Pick of the Year 2016)

2015

[J] Gang Yao, Rodolfo Pellizzoni, Stanley Bak, Heechul Yun, and Marco Caccamo. Global Real-Time Memory-Centric Scheduling for Multicore Systems. IEEE Transactions on Computers (TC), 2016 (Accepted in 2015). [paper]
[C] Prathap Kumar Valsan, Heechul Yun. MEDUSA: A Predictable and High-Performance DRAM Controller for Multicore based Embedded Systems IEEE Intl. Conference on Cyber-Physical Systems, Networks, and Applications (CPSNA), 2015. [paper]
[W] Heechul Yun, Prathap Kumar Valsan. Evaluating the Isolation Effect of Cache Partitioning on COTS Multicore Platforms. Workshop on Operating Systems Platforms for Embedded Real-Time applications (OSPERT), 2015. [paper]
[C] Heechul Yun, Rodolfo Pellizzoni, Prathap Kumar Valsan. Parallelism-Aware Memory Interference Delay Analysis for COTS Multicore Systems. Euromicro Conference on Real-Time Systems (ECRTS), 2015. [paper] [slides]
[C] Renato Mancuso, Rodolfo Pellizzoni, Marco Caccamo, Lui Sha and Heechul Yun. WCET(m) Estimation in Multi-Core Systems using Single Core Equivalence. Euromicro Conference on Real-Time Systems (ECRTS), 2015. [paper]

2014

[J] Gang Yao, Heechul Yun, Zheng Pei Wu, Rodolfo Pellizzoni, Marco Caccamo, Lui Sha. Schedulability Analysis for Memory Bandwidth Regulated Multicore Real-Time Systems. IEEE Transactions on Computers (TC), 2016. (Accepted in 2014) [paper]
[W] Prathap Kumar Valsan, Heechul Yun. An Enhanced COTS DRAM Controller Design for Real Time Systems. Real-Time Systems Symposium Work-In-Progress (RTSS-WIP), IEEE, 2014. [paper]
[W] Santosh Gondi, Siddhartha Biswas, Heechul Yun. Performance Isolation for Real-Time Applications on Multicore Platforms using PALLOC and MemGuard. Real-Time Linux Workshop , 2014. [paper]
[C] Heechul Yun, Renato Mancuso, Zheng-Pei Wu, Rodolfo Pellizzoni. PALLOC: DRAM Bank-Aware Memory Allocator for Performance Isolation on Multicore Platforms. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), IEEE, 2014. [paper] [slides] [code]
[W] Michael Jantz, Kshitij Doshi, Prasad Kulkarni, and Heechul Yun. Leveraging MPST in Linux with Application Guidance to Achieve Power-Performance Goals. Ottawa Linux Symposium, 2014. [paper]
[O] Lui Sha, Marco Caccamo, Renato Mancuso, Jung-Eun Kim, Man-Ki Yoon, Rodolfo Pellizzoni, Heechul Yun, Russel Kegley, Dennis Perlman, Greg Arundale, Richard Bradford. Single-core Equivalent Virtual Machines for Hard Real-Time Computing on Multicore Processors. Technical Report, University of Illinois, Urbana-Champaign, 2014. [paper]

2013

[W] Heechul Yun. Improving Real-Time Performance on Multicore Platforms Using MemGuard. Real-Time Linux Workshop , 2013. [paper] [slides]
[C] Heechul Yun, Gang Yao, Rodolfo Pellizzoni, Marco Caccamo, and Lui Sha. MemGuard: Memory Bandwidth Reservation System for Efficient Performance Isolation in Multi-core Platforms. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), IEEE, 2013. [paper] [slides] [code]
[C] Sibin Mohan, Stanley Bak. Emilliano Betti, Heechul Yun, Lui Sha, and Marco Caccamo. S3A: Secure System Simplex Architecture for Enhanced Security of Cyber-Physical Systems. ACM Intl. Conference on High Confidence Networked Systems (HiCoNS), ACM/IEEE, 2013. [acm]

2009 - 2012

[C] Heechul Yun, Gang Yao, Rodolfo Pellizzoni, Marco Caccamo, and Lui Sha. Memory Access Control in Multiprocessor for Real-time Systems with Mixed Criticality. Euromicro Conference on Real-Time Systems (ECRTS), IEEE, 2012. [paper]
[J] Heechul Yun, Po-Liang Wu, Anshu Arya, Tarek Abdelzaher, Cheolgi Kim, and Lui Sha. System-wide Energy Optimization for Multiple DVS Components and Real-time Tasks. Real-time Systems Journal, 2011. [paper]
[C] Heechul Yun, Cheolgi Kim, and Lui Sha. Deterministic Real-time Scheduling. IEEE Intl. Conference on Real-Time and Embedded Technology and Applications Symposium (RTAS), Work-In-Progress, IEEE, 2011. [paper]
[C] Heechul Yun, Po-Liang Wu, Anshu Arya, Tarek Abdelzaher, Cheolgi Kim, and Lui Sha. System-wide Energy Optimization for Multiple DVS Components and Real-time Tasks. Euromicro Conference on Real-Time Systems (ECRTS), IEEE, 2010. [paper] [slides] (Best Paper Nominee)
[C] Heechul Yun, Po-Liang Wu, Maryam Rahmaniheris, Cheolgi Kim, and Lui Sha. A Reduced Complexity Design Pattern For Distributed Hierarchical Command and Control System. ACM/IEEE Intl. Conference on Cyber-Physical Systems (ICCPS), ACM/IEEE, 2010. [paper]
[C] Cheolgi Kim, Mu Sun, Sibin Mohan, Heechul Yun, Abdullah Al-Nayeem, and Lui Sha. A Framework for the Safe Interpretability of Medical Devices in the Presence of Connection Failures. ACM/IEEE Intl. Conference on Cyber-Physical Systems (ICCPS), ACM/IEEE, 2010. [acm]

Before 2009

[C] Hyoksung Choi and Heechul Yun. Context Switching and IPC Performance Comparison between uClinux and Linux on the ARM9 based Processors. Samsung Tech Conference, 2005. [paper]
[W] Heechul Yun, Sankwon Lee, and Joonwon Lee. An Efficient Lock Protocol for Home-based Lazy Release Consistency. Workshop on Software Distributed Shared Memory (held in conjunction with CCGRID), 2001. [paper]
[W] Sangkwon Lee, Heechul Yun, and Joonwon Lee. Adaptive Prefetching Technique for Home-based Lazy Release Consistency. Workshop on Software Distributed Shared Memory (held in conjunction with CCGRID), 2001. [paper]

Book Chapters

Hyejin Kim and Heechul Yun. Linux 3.0 Power User (Korean), PCBOOK, 1996.

Patents

(granted) KOR PATENT NO 1008406090000. Apparatus and method of providing contents service.
(granted) KOR PATENT NO 1007397220000. A method for managing a flash memory and a flash memory system.
(granted) KOR PATENT NO 1007253900000. Apparatus and method for storing data in nonvolatilecache memory considering update ratio.
(granted) US PATENT NO 7,367,013. Method for integrating Linux kernel and application software packages and generating installation file list based on CML2 computer language.
(pending) US-2007-0043900-A1. Flash memory management method and flash memory system.
(pending) US-2006-0149902-A1. Apparatus and method for storing data in nonvolatile cache memory considering update ratio.