Selected Publications

  • Witcher: Systematic Crash Consistency Testing for Non-Volatile Memory Key-Value Stores
    Xinwei Fu, Wook-Hee Kim, Ajay Paddayuru Shreepathi, Mohannad Ismail, Sunny Wadkar, Dongyoon Lee, and Changwoo Min
    In Proceedings of ACM Symposium on Operating Systems Principles (SOSP 2021)
    [paper | slides | code | video]

  • PACTree: A High Performance Persistent Range Index Using PAC Guidelines
    Wook-Hee Kim, R. Madhava Krishnan, Xinwei Fu, Sanidhya Kashyap, and Changwoo Min
    In Proceedings of ACM Symposium on Operating Systems Principles (SOSP 2021)
    [paper | slides | code | video]

  • Birds of a Feather Flock Together : Scaling RDMA RPCs with FLOCK
    Sumit Kumar Monga, Sanidhya Kashyap, and Changwoo Min
    In Proceedings of ACM Symposium on Operating Systems Principles (SOSP 2021)
    [paper | slides | video]

  • VIP: Safeguard Value Invariant Property for Thwarting Critical Memory Corruption Attacks
    Mohannad Ismail+, Jinwoo Yom+, Christopher Jelesnianski, Yeongjin Jang, and Changwoo Min
    In Proceedings of Conference on Computer and Communications Security (CCS 2021)
    [paper | code]
    +Co-first author

  • ReplayCache: Enabling Volatile Caches for Energy Harvesting Systems
    Jianping Zeng, Jongouk Choi, Xinwei Fu, Ajay Paddayuru Shreepathi, Dongyoon Lee, Changwoo Min, and Changhee Jung
    In Proceedings of Annual IEEE/ACM International Symposium on Microarchitecture (MICRO-54)

  • TIPS: Making Volatile Index Structures Persistent with DRAM-NVMM Tiering
    R. Madhava Krishnan, Wook-Hee Kim, Xinwei Fu, Sumit Kumar Monga, Hee Won Lee, Minsung Jang, Ajit Mathew, and Changwoo Min
    In Proceedings of USENIX Annual Technical Conference (ATC 2021)
    [paper | slides | code | video]

  • LODIC: Logical Distributed Counting for Scalable File Access
    Jeoungahn Park, Taeho Hwang, Jongmoo Choi, Changwoo Min, and Youjip Won
    In Proceedings of USENIX Annual Technical Conference (ATC 2021)
    [paper | slides | video]

  • CrossFS: A Cross-layered Direct-Access File System
    Yujie Ren, Changwoo Min, and Sudarsun Kannan
    In Proceedings of the 12th annual non-volatile memories workshop (NVMW 2021)
    [paper | slides | code | video]
    Memorable Paper Award Finalist

  • POSEIDON : Safe, Fast and Scalable Persistent Memory Allocator
    Wook-Hee Kim, Anthony Demeri, R. Madhava Krishnan, Jaeho Kim, Mohannad Ismail, and Changwoo Min
    In Proceedings of the 12th Annual Non-Volatile Memories Workshop (NVMW 2021)
    [paper | slides]

  • Making Volatile Index Structures Persistent using TIPS
    R. Madhava Krishnan, Wook-Hee Kim, Hee Won Lee, Minsung Jang, Sumit Kumar Monga, Ajit Mathew, and Changwoo Min
    In Proceedings of the 12th annual non-volatile memories workshop (NVMW 2021)
    [paper | slides | video]

  • ExpRace: Exploiting Kernel Races through Raising Interrupts
    Yoochan Lee, Changwoo Min, and Byoungyoung Lee
    In Proceedings of the 30th USENIX Security Symposium (Security 2021)

  • POSEIDON: Safe, Fast and Scalable Persistent Memory Allocator
    Anthony Demeri, Wook-Hee Kim, R. Madhava Krishnan, Jaeho Kim, Mohannad Ismail, and Changwoo Min
    In Proceedings of the 21st ACM/IFIP International Middleware Conference (Middleware 2020)
    [paper | slides | video]

  • An OpenMP Runtime for Transparent Work Sharing Across Cache-Incoherent Heterogeneous Nodes
    Robert Lyerly, Changwoo Min, Christopher J. Rossbach, and Binoy Ravindran
    In Proceedings of the 21st ACM/IFIP International Middleware Conference (Middleware 2020)
    [paper]

  • CrossFS: A Cross-layered Direct-Access File System
    Yujie Ren, Changwoo Min, and Sudarsun Kannan
    In Proceedings of the 14th USENIX Symposium on Operating Systems Design and Implementation (OSDI 2020)
    [paper | slides | code | video]

  • Exploiting Kernel Races through Taming Thread Interleaving
    Yoochan Lee, Byoungyoung Lee, and Changwoo Min
    BlackHat USA (2020)
    [slides]

  • MARDU: Efficient and Scalable Code Re-randomization
    Christopher Jelesnianski, Jinwoo Yom, Changwoo Min, and Yeongjin Jang
    In Proceedings of the 13th ACM International Systems and Storage Conference (SYSTOR 2020)
    [paper | slides | video]

  • DEX: Scaling Applications Beyond Machine Boundaries
    Sang-Hoon Kim, Ho-Ren Chuang, Robert Lyerly, Pierre Olivier, Changwoo Min and Binoy Ravindran
    In Proceedings of the 40th IEEE International Conference on Distributed Computing Systems (ICDCS 2020)
    [paper | video]

  • HydraList: A Scalable In-Memory Index Using Asynchronous Updates and Partial Replication
    Ajit Mathew and Changwoo Min
    In Proceedings of the 46th International Conference on Very Large Data Bases (VLDB 2020)
    [paper | slides | code | video]

  • Durable Transactional Memory Can Scale with TimeStone
    R.Madhava Krishnan, Jaeho Kim, Ajit Mathew, Xinwei Fu, Anthony Demeri, Changwoo Min, and Sudarsun Kannan
    In Proceedings of the 11th Annual Non-Volatile Memories Workshop (NVMW 2020)
    [paper | code]

  • Durable Transactional Memory Can Scale with TimeStone
    R.Madhava Krishnan, Jaeho Kim, Ajit Mathew, Anthony Demeri, Xinwei Fu, Changwoo Min, and Sudarsun Kannan
    In Proceedings of ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS 2020)
    [paper | slides | code | video]

  • Scalable and Practical Locking with Shuffling
    Sanidhya Kashyap, Irina Calciu, Xiaohe Cheng, Changwoo Min, and Taesoo Kim
    In Proceedings of ACM Symposium on Operating Systems Principles (SOSP 2019)
    [paper | slides | code | video]

  • Alleviating Garbage Collection Interference Through Spatial Separation in All Flash Arrays
    Jaeho Kim, Kwanghyun Lim, Youngdon Jung, Sungjin Lee, Changwoo Min, and Sam H. Noh
    In Proceedings of USENIX Annual Technical Conference (ATC 2019)
    [paper | slides | video]

  • A Binary-Compatible Unikernel
    Pierre Olivier, Daniel Chiba, Stefan Lankes, Changwoo Min, and Binoy Ravindran
    In Proceedings of ACM SIGPLAN/SIGOPS International Conference on Virtual Execution Environments (VEE 2019)
    [paper | slides | code]
    Best paper, Hacker News, Read a paper

  • MV-RLU: Scaling Read-Log-Update with Multi-Versioning
    Jaeho Kim+, Ajit Mathew+, Sanidhya Kashyap, Madhava Krishnan Ramanathan, and Changwoo Min
    In Proceedings of ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS 2019)
    [paper | slides | code | video]
    +Co-first author, Torgersen Graduate Student Research Excellence Award, Concurrency Freaks

  • Scaling Guest OS Critical Sections With eCS
    Sanidhya Kashyap, Changwoo Min, and Taesoo Kim
    In Proceedings of USENIX Annual Technical Conference (ATC 2018)
    [paper | slides | video]

  • A Scalable Ordering Primitive for Multicore Machines
    Sanidhya Kashyap, Changwoo Min, Kangnyeon Kim, and Taesoo Kim
    In Proceedings of ACM European Conference on Computer Systems (EuroSys 2018)
    [paper | slides | video]

  • SOLROS: A Data-Centric Operating System Architecture for Heterogeneous Computing
    Changwoo Min, Woonhak Kang, Mohan Kumar, Sanidhya Kashyap, Steffen Maass, and Taesoo Kim
    In Proceedings of ACM European Conference on Computer Systems (EuroSys 2018)
    [paper | slides | code | video]

  • Designing New Operating Primitives to Improve Fuzzing Performance
    Wen Xu, Sanidhya Kashyap, Changwoo Min, and Taesoo Kim
    In Proceedings of ACM Conference on Computer and Communications Security (CCS 2017)
    [paper | slides | code | video]
    Mozilla research

  • Scalable NUMA-aware Blocking Synchronization Primitives
    Sanidhya Kashyap, Changwoo Min, and Taesoo Kim
    In Proceedings of USENIX Annual Technical Conference (ATC 2017)
    [paper | slides | code | video]

  • Mosaic: Processing a Trillion-Edge Graph on a Single Machine
    Steffen Maass, Changwoo Min, Sanidhya Kashyap, Woonhak Kang, Mohan Kumar, and Taesoo Kim
    In Proceedings of ACM European Conference on Computer Systems (EuroSys 2017)
    [paper | slides | code]
    Best Student paper, Hacker News, The Next Platform, GT News, The Morning Paper

  • APISan: Sanitizing API Usages through Semantic Cross-checking
    Insu Yun, Changwoo Min, Xujie Si, Yeongjin Jang, Taesoo Kim, and Mayur Naik
    In Proceedings of USENIX Security Symposium (Security 2016)
    [paper | slides | code | video]
    TGC/News, CVE-2016-5636

  • Instant OS Updates via Userspace Checkpoint-and-Restart
    Sanidhya Kashyap, Changwoo Min, Byoungyoung Lee, Taesoo Kim, and Pavel Emelyanov
    In Proceedings of USENIX Annual Technical Conference (ATC 2016)
    [paper | slides | video]
    Linux Plumbers Conference 2015, CRIU

  • Understanding Manycore Scalability of File Systems
    Changwoo Min, Sanidhya Kashyap, Steffen Maass, Woonhak Kang, and Taesoo Kim
    In Proceedings of USENIX Annual Technical Conference (ATC 2016)
    [paper | slides | code | video]

  • Cross-checking Semantic Correctness: The Case of Finding File System Bugs
    Changwoo Min, Sanidhya Kashyap, Byoungyoung Lee, Chengyu Song, and Taesoo Kim
    In Proceedings of ACM Symposium on Operating Systems Principles (SOSP 2015)
    [paper | slides | code | video]
    Bug Report

  • Scalability in the Clouds! A Myth or Reality?
    Sanidhya Kashyap, Changwoo Min, and Taesoo Kim
    In Proceedings of Asia-Pacific Workshop on Systems (APSys 2015)
    [paper | slides | code]
    Best paper, nominated to Operating Systems Review (OSR), LWN: qspinlock in Linux

  • Lightweight Application-Level Crash Consistency on Transactional Flash Storage
    Changwoo Min, Woon-Hak Kang, Taesoo Kim, Sang-Won Lee, and Young Ik Eom
    In Proceedings of Annual Technical Conference (ATC 2015)
    [paper | video]

  • An Efficient Buffer Replacement Algorithm for NAND Flash Storage Devices
    Dong Hyun Kang, Changwoo Min, and Young Ik Eom
    In Proceedings of IEEE 21st International Symposium on Modelling, Analysis \& Simulation of Computer and Telecommunication Systems (MASCOTS 2014)
    [paper | slides]

  • X-FTL: transactional FTL for SQLite databases
    Woon-Hak Kang, Sang-Won Lee, Bongki Moon, Gi-Hwan Oh, and Changwoo Min
    In Proceedings of ACM SIGMOD International Conference on Management of Data (SIGMOD 2013)
    [paper | slides]

  • DANBI: Dynamic Scheduling of Irregular Stream Programs for Many-Core Systems
    Changwoo Min, and Young Ik Eom
    In Proceedings of International Conference on Parallel Architectures and Compilation Techniques (PACT 2013)
    [paper | slides | code]

  • SFS: random write considered harmful in solid state drives
    Changwoo Min, Kangnyeon Kim, Hyunjin Cho, Sang-Won Lee, and Young Ik Eom
    In Proceedings of USENIX conference on File and Storage Technologies (FAST 2012)
    [paper | slides | video]

  • A Syscall-Level Binary-Compatible Unikernel
    Pierre Olivier, Hugo Lefeuvre, Daniel Chiba, Stefan Lankes, Changwoo Min, and Binoy Ravindran
    IEEE Transactions on Computer