Changhee Jung Associate Professor Department of Computer Science Purdue University 305 N. University Street West Lafayette, IN 47907 Office: LWSN 3154G Phone: (765) 494-8508 Email: chjung at purdue (_dot_) edu

Ph.D., Georgia Tech, 2013

---

My research interests are in compilers and computer architecture with an emphasis on performance, reliability, and security. I have developed program analysis and microarchitecture optimization techniques for soft error resilience, concurrency bug detection, and system security such as memory safety and Linux kernel permission check. Currently, I am working on energy-efficient intermittent computation and nonvolatile memory crash consistency. To come up with cost-effective solutions, I often leverage compiler-architecture codesign and repurpose existing hardware features. Prior to joining Purdue, I was an Assistant Professor at Virginia Tech which I joined after completing my PhD under the supervision of Prof. Santosh Pande at Georgia Tech in 2013. During the three summers between 2010 and 2012, I worked as a software engineering intern with the compiler optimization team at Google. From 2005 to 2008, I was a member of the research staff at ETRI (Electronics and Telecommunications Research Institute). I was honored to receive an NSF CAREER Award (2018) and inducted into MICRO Hall of Fame (2021).

---

News

Open positions for graduate students and postdocs. Email me your CV, if you are interested in compilers and computer architecture. Write-Light Cache accepted to ISCA 2023. Congratulations to Jongouk and Jianping! A paper conditionally accepted to S&P (Oakland) 2023. Flame accepted to MICRO 2022. Congratulations to Yida! Capri accepted to HPDC 2022. Congratulations to Jungi and Jianping! CapOS and RockClimb accepted to EMSOFT 2022 and RTAS 2022 respectively. Congratulations to Jongouk! Inducted to MICRO Hall of Fame 2 papers (ReplayCache and Turnpike) accepted to MICRO 2021! Congratulations to Jianping (x2), Jongouk, and Hongjune! Congratulations to Jongouk for getting his paper selected as Memorable Paper Award Finalist in NVMW 2021. 3 papers accepted to NVMW 2021. Congratulations to Jungi and Jongouk. PMEM-Spec accepted to ASPLOS 2021. Congratulations to Jungi! UHTM accepted to MICRO 2020. Congratulations to Jungi! Penny accepted to PLDI 2020. Congratulations to Hongjune, Jianping, and Qingrui! Congratulations to Tong for successfully defending his PhD thesis! I am serving as the program chair for LCTES 2020. Submit your best work! CoSpec accepted to MICRO 2019. Congratulations to Jongouk and Qingrui! PeX accepted to USENIX Security 2019. Congratulations to Tong! Old News I will be joining the Department of Computer Science at Purdue University as an Associate Professor. Elastin accepted to RTAS 2019. Congratulations to Jongouk! I am co-charing HIPS 2019 with Neha Gholkar (Intel). Submit your best work! BOGO accepted to ASPLOS 2019. Congratulations to Tong! 2 papers (iDO and Sampler) accepted to MICRO 2018! Congratulations to Qingrui and Tong! Congratulations to Qingrui for successfully defending his PhD thesis! A new grant awarded from NSF CSR CommAnalyzer accepted to HPDC 2018. Congratulations to Ahmed! Received an NSF CAREER Award nAdroid accepted to CGO 2018. Congratulations to Xinwei! AutoMatch accepted to IISWC 2017. Congratulations to Ahmed! BenchPrime accepted to EMSOFT 2017. Congratulations to Qingrui, Xiaolong, and Larry! ProRace accepted to ASPLOS 2017. Congratulations to Tong! Received AMD Faculty Research Award A paper accepted to MICRO 2016. Congratulations to Qingrui! Bolt accepted to SC 2016 as Best Student Paper Finalist. Congratulations to Qingrui! A paper accepted to NVMSA 2016. Congratulations to Qingrui! A journal paper accepted to ACM TECS. Congratulations to Qingrui! TxRace accepted to ASPLOS 2016. Congratulations to Tong! A new patent granted! It was proposed to improve TCMalloc, Google 's open-source memory allocator, but would be applicable to other allocators. If you are interested in it, please take a look at US Patent 9063668. Received Google Faculty Research Award A new grant awarded from NSF CCF Clover accepted to LCTES 2015. Congratulations to Qingrui! I will be serving as the Publicity and Publications Chair for ASPLOS 2016. Please consider submitting your best work! 2 papers accepted to ICSE 2014!

Publications

[TOP-TIER] tag is used to mark the paper that appears in one of the top CS conferences selected by csrankings.org

• Jongouk Choi, Jianping Zeng, Dongyoon Lee, Changwoo Min, and Changhee Jung,
  "Write-Light Cache for Energy Harvesting Systems",
  [TOP-TIER] ACM/IEEE International Symposium on Computer Architecture (ISCA), June 2023.


• A paper conditionally accepted to
  
  [TOP-TIER] IEEE Symposium on Security and Privacy (Oakland), May 2023.


• Yida Zhang and Changhee Jung,
  "Featherweight Soft Error Resilience for GPUs",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2022.


• Jongouk Choi, Hyunwoo Joe, and Changhee Jung,
  "CapOS: Capacitor Error Resilience for Energy Harvesting Systems",
  [TOP-TIER] ACM SIGBED International Conference on Embedded Software (EMSOFT), October 2022.


• Jungi Jeong, Jianping Zeng, and Changhee Jung,
  "Capri: Compiler and Architecture Support for Whole-System Persistence",
  [TOP-TIER] ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC), June 2022.


• Jinmeng Zhou, Tong Zhang, Wenbo Shen, Dongyoon Lee, Changhee Jung, Ahmed Azab, Ruowen Wang, Peng Ning, Kui Ren,
  "Automatic Permission Check Analysis for Linux Kernel",
  IEEE Transactions on Dependable and Secure Computing (TDSC), 2022.


• Jongouk Choi, Larry Kittinger, Qingrui Liu, and Changhee Jung,
  "Compiler-Directed High-Performance Intermittent Computation with Power Failure Immunity",
  [TOP-TIER] IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS), May 2022.


• Jianping Zeng, Jongouk Choi, Xinwei Fu, Ajay P. Shreepathi, Dongyoon Lee, Changwoo Min, and Changhee Jung,
  "ReplayCache: Enabling Volatile Caches for Energy Harvesting Systems",
  Annual Non-Volatile Memories Workshop (NVMW), May 2022.


• Jianping Zeng, Jongouk Choi, Xinwei Fu, Ajay P. Shreepathi, Dongyoon Lee, Changwoo Min, and Changhee Jung,
  "ReplayCache: Enabling Volatile Caches for Energy Harvesting Systems",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2021.


• Jianping Zeng, Hongjune Kim, Jaejin Lee, and Changhee Jung,
  "Turnpike: Lightweight Soft Error Resilience for In-Order Cores",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2021.


• Jungi Jeong and Changhee Jung,
  "PMEM-Spec: Persistent Memory Speculation (Strict Persistency Can Trump Relaxed Persistency)",
  [TOP-TIER] International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), April 2021.


• Jungi Jeong and Changhee Jung,
  "PMEM-Spec: Persistent Memory Speculation (Strict Persistency Can Trump Relaxed Persistency)",
  Annual Non-Volatile Memories Workshop (NVMW), March 2021.


• Jungi Jeong, Jaewan Hong, Seungryoul Maeng, Changhee Jung, and Youngjin Kwon,
  "Unbounded Hardware Transactional Memory for a Hybrid DRAM/NVM Memory System",
  Annual Non-Volatile Memories Workshop (NVMW), March 2021.


• Jongouk Choi, Qingrui Liu, and Changhee Jung,
  "CoSpec: Compiler Directed Speculative Intermittent Computation",
  Annual Non-Volatile Memories Workshop (NVMW), March 2021.
  Memorable Paper Award Finalist
  


• Jungi Jeong, Jaewan Hong, Seungryoul Maeng, Changhee Jung, and Youngjin Kwon,
  "Unbounded Hardware Transactional Memory for a Hybrid DRAM/NVM Memory System",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2020.


• Hongjune Kim, Jianping Zeng, Qingrui Liu, Mohammad Abdel-Majeed, Jaejin Lee, and Changhee Jung,
  "Compiler-Directed Soft Error Resilience for Lightweight GPU Register File Protection",
  [TOP-TIER] ACM SIGPLAN International Conference on Programming Language Design and Implementation (PLDI), June 2020.


• Jongouk Choi, Qingrui Liu, and Changhee Jung,
  "CoSpec: Compiler Directed Speculative Intermittent Computation",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2019.


• Tong Zhang, Wenbo Shen, Dongyoon Lee, Changhee Jung, Ahmed Azab, and Ruowen Wang,
  "PeX: A Permission Check Analysis Framework for Linux Kernel",
  [TOP-TIER] USENIX Security Symposium (USENIX Security), August 2019.


• Jongouk Choi, Hyunwoo Joe, Yongjoo Kim, and Changhee Jung,
  "Achieving Stagnation-Free Intermittent Computation with Boundary-Free Adaptive Execution",
  [TOP-TIER] IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS), April 2019.


• Tong Zhang, Dongyoon Lee, and Changhee Jung,
  "BOGO: Buy Spatial Memory Safety, Get Temporal Memory Safety (Almost) Free",
  [TOP-TIER] International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), April 2019.


• Qingrui Liu, Joseph Izraelevitz, Se Kwon Lee, Michael L. Scott, Sam H. Noh, and Changhee Jung,
  "iDO: Compiler-Directed Failure Atomicity for Nonvolatile Memory",
  Annual Non-Volatile Memories Workshop (NVMW), March 2019.


• Qingrui Liu, Joseph Izraelevitz, Se Kwon Lee, Michael L. Scott, Sam H. Noh, and Changhee Jung,
  "iDO: Compiler-Directed Failure Atomicity for Nonvolatile Memory",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2018.


• Sam Silvestro, Hongyu Liu, Tong Zhang, Changhee Jung, Dongyoon Lee, and Tongping Liu,
  "Sampler: PMU-based Sampling to Detect Memory Errors Latent in Production Software",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2018.


• Ahmed E. Helal, Changhee Jung, Wu-chun Feng, and Yasser Y. Hanafy,
  "CommAnalyzer: Automated Estimation of Communication Cost and Scalability on HPC Clusters from Sequential Code",
  [TOP-TIER] ACM International Symposium on High-Performance Parallel and Distributed Computing (HPDC), June 2018.


• Xinwei Fu, Dongyoon Lee, and Changhee Jung,
  "nAdroid: Statically Detecting Ordering Violations in Android Applications",
  IEEE/ACM International Symposium on Code Generation and Optimization (CGO), February 2018


• Qingrui Liu, Xiaolong Wu, Larry Kittinger, Markus Levy, and Changhee Jung,
  "BenchPrime: Effective Building of a Hybrid Benchmark Suite",
  [TOP-TIER] ACM SIGBED International Conference on Embedded Software (EMSOFT), October 2017.


• Ahmed E. Helal, Wu-chun Feng, Changhee Jung, and Yasser Y. Hanafy,
  "An Automated Framework for Relative Performance Estimation and Workload Distribution on Heterogeneous HPC Systems",
  IEEE International Symposium on Workload Characterization (IISWC), October 2017.


• Tong Zhang, Changhee Jung, and Dongyoon Lee,
  "ProRace: Practical Data Race Detection for Production Use",
  [TOP-TIER] International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), April 2017.


• Qingrui Liu, Changhee Jung, Dongyoon Lee, and Devesh Tiwari,
  "Compiler-Directed Lightweight Checkpointing for Fine-Grained Guaranteed Soft Error Recovery",
  [TOP-TIER] ACM/IEEE International Conference for High Performance Computing, Networking, Storage and Analysis (SC), November 2016.
  Best Student Paper Finalist


• Qingrui Liu, Changhee Jung, Dongyoon Lee, and Devesh Tiwari,
  "Low-Cost Soft Error Resilience with Unified Data Verification and Fine-Grained Recovery for Acoustic Sensor Based Detection",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), October 2016.


• Qingrui Liu and Changhee Jung,
  "Lightweight Hardware Support for Transparent Consistency-Aware Checkpointing in Intermittent Energy-Harvesting systems",
  IEEE Non-Volatile Memory Systems and Applications Symposium (NVMSA), August 2016.


• Qingrui Liu, Changhee Jung, Dongyoon Lee, and Devesh Tiwari,
  "Compiler Directed Soft Error Detection and Recovery to Avoid DUE and SDC via Tail-DMR",
  ACM Transactions on Embedded Computing Systems (TECS), 2016.


• Tong Zhang, Dongyoon Lee, and Changhee Jung,
  "TxRace: Efficient Data Race Detection Using Commodity Hardware Transactional Memory",
  [TOP-TIER] International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS), April 2016.


• Qingrui Liu, Changhee Jung, Dongyoon Lee, and Devesh Tiwari,
  "Clover: Compiler Directed Lightweight Soft Error Resilience",
  ACM SIGPLAN/SIGBED International Conference on Languages, Compilers, Tools and Theory for Embedded Systems (LCTES), June 2015.


• Changhee Jung, Sangho Lee, Easwaran Raman, and Santosh Pande,
  "Automated Memory Leak Detection for Production Use",
  [TOP-TIER] International Conference on Software Engineering (ICSE), June 2014.


• Sangho Lee, Changhee Jung, and Santosh Pande,
  "Detecting Memory Leaks Through Introspective Dynamic Behavior Modeling Using Machine Learning",
  [TOP-TIER] International Conference on Software Engineering (ICSE), June 2014.


• Changhee Jung,
  "Effective Techniques for Understanding and Improving Data Structure Usage",
  Doctoral Dissertation, School of Computer Science, Georgia Institute of Technology, August 2013.


• Changhee Jung, Silvius Rus, Brian P. Railing, Nathan Clark, and Santosh Pande,
  "Brainy: Effective Selection of Data Structures",
  [TOP-TIER] ACM SIGPLAN International Conference on Programming Language Design and Implementation (PLDI), June 2011.


• Jaejin Lee, Jung-Ho Park, Honggyu Kim, Changhee Jung, Daeseob Lim, and SangYong Han,
  "Adaptive Execution Techniques of Parallel Programs for Multiprocessors",
  Journal of Parallel and Distributed Computing (JPDC), Issue 5, May 2010.


• Changhee Jung and Nathan Clark,
  "DDT: Design and Evaluation of a Dynamic Program Analysis for Optimizing Data Structure Usage",
  [TOP-TIER] IEEE/ACM International Symposium on Microarchitecture (MICRO), December 2009.


• Changhee Jung and Nathan Clark,
  "Toward Automatic Data Structure Replacement for Effective Parallelization",
  Workshop on Parallel Execution of Sequential Programs on Multicore Architectures (PESPMA), June 2009.
  Highest ranked paper by the anonymous reviewers


• Jaejin Lee, Changhee Jung, Daeseob Lim, and Yan Solihin,
  "Prefetching with Helper Threads for Loosely-Coupled Multiprocessor Systems",
  IEEE Transactions on Parallel and Distributed System (TPDS), Vol 20, No 9, September 2009.


• Changhee Jung, Duk-Kyun Woo, Kanghee Kim and Sung-Soo Lim,
  "Performance Characterization of Prelinking and Preloading for Embedded Systems",
  [TOP-TIER] ACM SIGBED International Conference on Embedded Software (EMSOFT), October 2007.


• Songah Chae, Doo-Hyun Kim, Changhee Jung, Duk-Kyun Woo, and Chaedeok Lim,
  "Experimental Analysis on Time-Triggered Power Consumption Measurement with DVS-enabled Multiple Power Domain Platform",
  IFIP Workshop on Software Technologies for Future Embedded & Ubiquitous Systems (SEUS), LNCS 4761, May 2007.
  (Invited paper)


• Changhee Jung, Duk-Kyun Woo, Yongsang Kim, Ingeol Chun, and Chaedeok Lim,
  "NanoEsto: An IDE for Ubiquitous Sensor Network Application Developers",
  International Symposium on Embedded Technology (ISET), April 2006.
  Best Paper Award


• Changhee Jung, Daeseob Lim, Jaejin Lee, and Yan Solihin,
  "Helper Thread Prefetching for Loosely-Coupled Multiprocessor Systems",
  IEEE International Parallel & Distributed Processing Symposium (IPDPS), April 2006.


• Changhee Jung, Daeseob Lim, Jaejin Lee, and SangYong Han,
  "Adaptive Execution Techniques for SMT Multiprocessor Architectures",
  ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming (PPoPP), June 2005.

---

Patents

• Changhee Jung, Silvius Rus, and Ahmad Sharif,
  "Distributed memory allocation in multi-threaded programs",
  US Patent 9063668, 2015

• Changhee Jung, Daeseob Lim, Jaejin Lee, and SangYong Han,
  "Adaptive execution method for multithreaded processor-based parallel system",
  US Patent 7526637, 2009

---

Recognitions

• Inducted to MICRO Hall of Fame in 2021


• Memorable Paper Award Finalist in NVMW 2021


• 2018 NSF CAREER Award


• 2017 AMD Faculty Research Award


• Best Student Paper Finalist in SC 2016


• 2015 Google Faculty Research Award


• 2012-2013 Facebook Fellowship Finalist


• Contribution to GCC 4.5 release (http://gcc.gnu.org/news.html)


• Best Paper Award in International Symposium on Embedded Technology (ISET) 2006


• Silver Prize in Samsung Humantech Thesis Competition, Seoul, Korea, February 2005
  (Selected as the best paper in the computer system field)

---

Teaching

At Purdue University

• CS 592: Compiler-Architecture Codesign for Performance, Reliability, and Security (Spring 2022)


• CS 352: Compilers: Principles and Practice (Spring 2021)


• CS 502: Compiling and Programming Systems (Spring 2020, Fall 2020, Fall 2021)


• CS 590: Compiler and Architectural Support for Performance, Reliability, and Security (Fall 2019)

At Virginia Tech

• CS 2505: Computer Organization I (Spring 2014, 2016, 2017, Fall 2018)


• CS 4284: Systems and Networking Capstone (Spring 2018)


• CS 4304: Compiler Design (Spring 2015, 2017, 2019)


• CS 5304: Translator Design and Construction (Fall 2013, 2015, 2017)


• CS 6304: Topics in Advanced Compilers and Computer Architecture (Fall 2014, 2016, Spring 2019)

---

Graduate Students

• Jianping Zeng


• Shao-Yu Huang


• Yuchen Zhou


• Byounguk Min


• Yida Zhang


• Gan Fang


• Mingqin Han

---

Alumni

• Jongouk Choi, Ph.D. 2022; Joined University of Central Florida as an Assistant Professor


• Jungi Jeong, Postdoc. 2022; First employed at Google


• Hongjune Kim (co-advised with Prof. Jaejin Lee), Ph.D. 2020; First employed at Intel


• Tong Zhang (co-advised with Prof. Dongyoon Lee), Ph.D. 2019; First employed at Samsung Electronics


• Ahmed Helal (co-advised with Prof. Wu Feng), Ph.D. 2019; First employed at Intel Labs


• Qingrui Liu, Ph.D. 2018; First employed at Xilinx; Currently at Annapurna Labs


• Larry Kittinger, Dropped out of Ph.D; First employed at Block.one; Currently at EOS Network Foundation


• Xiaolong Wu, MS 2018; Currently at Purdue ECE

---

Service

• Proposal Review Panel
  NSF 2019, DOE 2018, NSF 2018, NSF 2017 (3x), NSF 2016, NSF 2015 (2x)


• Organization Committee
  PPoPP'22 (Finance Chair), PACT'21 (Student Research Competition Chair), PPoPP'21 (Finance Chair), LCTES'20 (Program Chair), CGO'20 (Student Research Competition Chair), HIPS'19 (Program Chair), IISWC'19 (Web Chair), IISWC'18 (Web Chair), ASPLOS'16 (Publicity and Publications Chair)


• Program Committee
  CASES'23, NVMW'23, HPDC'23, ISCA'23, PPoPP'23, ASPLOS'23 (ERC), SAC'23 (CPS Track), MICRO'22, NVMSA'22, CASES'22, HPDC'22, ISCA'22 (ERC), ASPLOS'22, CGO'22, MICRO'21 (ERC), HPDC'21, NVMSA'21, NVMW'21, CASES'21, ASPLOS'21 (ERC), PPoPP'21, CGO'21 (SRC), SAC'21 (CPS Track), PACT'20 (ERC), MICRO'20, HPDC'20, ATC'20, FSE'20 (Visions and Reflections Track), PPoPP'20 (ERC), CASES'20, CGO'20, CC'20, MICRO'19 (ERC), MICRO'19 (SRC Judge), LCPC'19, ASAP'19, CGO'19 (SRC), ASPLOS'19 (SRC), CASES'19, HPDC'19, ICCD'19, EUROPAR'19, NAS'19, CGO'19, ASPLOS'19 (ERC), NAS'18, SC'18, CASES'18, ICS'18 (ERC), IPDPS'18, ASPLOS'18 (SRC Judge), IISWC'17, NVMSA'17, IPDRM'17, CGO'17, ICPADS'15, LCTES'14, EUROPAR'14, ICPADS'14

---