/Geunsik Homepage/



[My profile]



  • Full name: Geunsik Lim (GS Lim)
  • Home: 36, Dongtanwoncheon-ro 915beon-gil, Youngtong-gu, Suwon-si, South Korea
  • Nick name: chiphead (like geek), invain (to no purpose, aimlessly)
  • E-mail : leemgs.at.gmail.com
  • Gtalker (Hangout) : leemgs.at.gmail.com
  • ICQ : 46455794
  • EDAS identifier : 743415
  • IEEE identifier : 92541846
  • EasyChair identifier : leemgs
  • Skype : geunsik.lim
  • Blog : http://blog.naver.com/invain
  • Twitter : http://www.twitter.com/leemgs
  • Facebook: http://www.facebook.com/leemgs
  • GitHub Account: https://www.github.com/leemgs/
  • GitHub Memory: https://www.gitmemory.com/leemgs/
  • Google+ : https://plus.google.com/111621762953759064005/
  • Google Scholar Citations: http://scholar.google.com/citations?hl=en&user=Oy8m5Z8AAAAJ
  • ORCID (Open Researcher and Contributor ID): https://orcid.org/0000-0003-1845-7132
  • DBLP Computer Science Biblliography: https://dblp.org/pers/hd/l/Lim:Geunsik
  • Community(Fedora) : http://leemgs.fedorapeople.org/
  • Community(Kandroid): http://www.kandroid.org/
  • HomePage(restricted area): http://invain.mooo.com 
        : Turn-on perioid for power saving: 07:30 ~ 23:30 (Seoul time, KST)
  • HomePage(open area): https://leemgs.github.io




  • Bio: Geunsik Lim has been working on system software for various embedded devices at Samsung Electronics. Recently, He has been working on Linux kernel for Tizen OS scheduled to be released by the end of this year. Besides, He is a key member of Kandroid.org, which is the largest institute specialized in Android promotion in Korea. Previously, he participated in Ottawa Linux Symposium (OLS), linux.conf.au (LCA), and IEEE conferences as a speaker and a session chair for open source ecosystem. Prior to that, He had engaged in UNIX/Linux core of advanced technology R&D work. He has various experiences of system software of mobile phones, tablets, DTVs, camcorders, and printers. He has founded Gitstat open source project, which is a web based statistics and monitoring system for git. He has contributed to many open source projects such as Linux, GCC, Glibc, Android, and Tizen. He enjoys spending his time both solving software problems and trying to promote the adoption of Linux kernel and open source software for commercial embedded devices.

  • Affiliation: Samsung Electronics (Suwon city, South Korea)




  • [Work Experience]
        For more details, press my LinkedIn webpage.



    [International Journals]
    1. Geunsik Lim, Donghwa Lee, and Sang-bum Suh, "Cloud-Based Content Synchronization Method for Collaborative Learning Environment," International Journal of Advanced Corporate Learning (iJAC), Invitation Paper, vol. 8, no. 1, pp. 24-30, Mar. 2015

    2. Geunsik Lim, Changwoo Min, and Young Ik Eom, "Virtual memory partitioning for enhancing application performance in mobile devices," IEEE Transactions on Consumer Electronics (SCI Core), (Acceptance Rate:13%), issue 4, vol. 59, pp. 786-794, Nov. 2013




    [International Conferences]
    1. MyungJoo Ham and Geunsik Lim , "Making Configurable and Unified Platform, Ready for Broader Future Devices," 41st ACM/IEEE International Conference on Software Engineering (ICSE), Montreal, QC, Canada, May. 2019.

    2. Geunsik Lim, MyungJoo Ham, Jijoong Moon, Wook Song, Sangjung Woo, and Sewon Oh, "TAOS-CI: Lightweight & Modular Continuous Integration System for Edge Computing," 37th IEEE International Conference on Consumer Electronics (ICCE), Las Vegas, USA, Jan. 2019.

    3. Geunsik Lim and MyungJoo Ham, "BB: Booting Booster for Consumer Electronics with Modern OS," The European Conference on Computer Systems (EuroSys), London, UK, Apr. 2016.

    4. Geunsik Lim and MyungJoo Ham, "Faster Booting in Consumer Electronics," USENIX Annual Technical Conference (ATC), Practitioner Talk and Poster, Santa Clara city, CA, USA, Jul. 2015.

    5. Geunsik Lim, Jae-young Hwang, Kyungmin Park, and Sang-Bum Suh, "Enhancing Init Scheme for Improving Bootup Time in Mobile Devices," IEEE International Conference on Mobile Computing and Ubiquitous Networking (ICMU),Invited Session Chair, Hakodate City, Hokkaido, Japan, Jan. 2015. Accepted (Acceptance Rate:28%)

    6. Geunsik Lim, Downghwa Lee, and Sang-Bum Suh, "Cloud-Based Content Cooperation System to Assist Collaborative Learning Environment," IEEE International Conference on Teaching, Assessment, and Learning for Engineering (TALE), Invited Session Chair, Wellington, New Zealand, Dec. 2014. Accepted (Acceptance Rate:34%)

    7. Geunsik Lim and Sang-Bum Suh, "User-Level memory scheduler for optimizing application performance in NUMA-based multicore systems," IEEE International Conference on Software Engineering and Service Science (IEEE ICSESS), Beijing, China, Jun. 2014. (Acceptance Rate: 27%)

    8. Geunsik Lim, Minho Lee, R.J.W.E. Lahaye, and Young Ik Eom, "Distributed compilation system for high-speed software build processes," IEEE International Conference on Big Data and Smart Computing (BigComp), Bangkok, Thailand, Jan. 2014.

    9. Geunsik Lim, Young Ik Eom, "Accelerating software compilation using HTCondor and Distcc," Linux Conference on Australia (LCA), "Developer, Testing, Release and CI Automation" Miniconference, Perth, Australia, Jan. 2014.

    10. Geunsik Lim, Changwoo Min, and Young Ik Eom, "User-aware power management for mobile devices," IEEE Global Conference on Consumer Electronics (GCCE), Tokyo, Japan, Oct. 2013.

    11. Geunsik Lim, Changwoo Min, and Young Ik Eom, "Enhancing application performance by memory partitioning in Android platforms," 31st IEEE International Conference on Consumer Electronics (ICCE), Las Vegas, USA, Jan. 2013.

    12. Geunsik Lim, Changwoo Min, and Young Ik Eom, "Optimized lightweight thread framework for mobile devices," 3rd International Conference of Institution of Engineering and Technology [IET] Brunei Darussalam, Brunei, Sep. 2012.

    13. Geunsik Lim, Changwoo Min, and Young Ik Eom, "Load-balancing for improving user responsiveness on multicore-based embedded systems," 14th Linux Symposium (OLS), Ottawa, Canada, Jul. 2012.

    14. Geunsik Lim, Hyun-Jin Choi, Sang-Bum Suh, "NPTL Optimization for Lightweight Embedded Devices", 13th Linux Symposium (OLS), Ottawa, Canada, Jun-13-2011

    15. Geunsik Lim, Jupyung Lee, Sangbum Suh, "Deploying Preemptible Linux in the Latest Samsung Camcorder", 12th Linux Symposium (OLS), Ottawa, Canada, Jul-13-2010

    16. Geunsik Lim, "Android Platform on S3C6410 board", 3G Mobile Phone Design Conference, Simcheon/Hongkong, China, 2009

    17. Geunsik Lim, "Android Platform on X86 Netbook", Beijing Asia Pacific Android Conference (APAC), Beijing, China, 2009

    18. Geunsik Lim, "Android Platform on X86 Netbook", Shanghai Asia Pacific Android Conference (APAC), 2009, Shanghai, China

    19. Geunsik Lim, "Mobile Experience with Linux (Android Internals and Prototype on S3c6410)", Linux Conference on Australia (LCA),Mobile Miniconference, Tasmania, Australia, Jan. 2009

    20. Geunsik Lim, "Linux-Based Open Mobile Platform: Android features and Enhancement", International Symposium on Embedded Technology (ISET), Daegu, Korea, 2008




    [Domestic Journals]
    1. Geunsik Lim, Dong Hyun Kang, and Young Ik Eom, "CPU Mediator for Optimizing Thread Operations on IoT Devices," KIISE Transactions on Computing Practices : Computing Practices and Letter (CPL), vol. xx, issue x, xxx. 2019. ISSN xxxx-xxxx.

    2. Geunsik Lim, MyungJoo Ham, and Jaeyun Jung, "VTS: Virtual Testbed System for Cloud-based On-Device AI Application," KIISE Transactions on Computing Practices : Computing Practices and Letter (CPL), vol. xx, issue x, xxx. 2019. ISSN xxxx-xxxX.

    3. Geunsik Lim, Changwoo Min, and Young Ik Eom, "Resource management framework for improving thread performance on mobile platform," Journal of the Korean Institute of Information Scientists and Engineers (Journal of KIISE) : Computer Systems and Theory, vol. 40, issue 5, Oct. 2013. ISSN 1229-683x.

    4. Geunsik Lim, Seho Lee, and Young Ik Eom, "Task parallelism system of application for multicore-based mobile platform," Journal of Korea Information and Communications Society (Journal of KICS), vol.38, issue 6, May 2013. ISSBN: 1226-4717.




    [Domestic Conferences]
    1. Geunsik Lim, Dong Hyun Kang, and Young Ik Eom, "Optimizing Thread Operation for IoT Application," Proc. of KIISE Korea Computer Congress (KCC), Excellent Presentation Paper Award, Jun. 2019.

    2. Geunsik Lim, MyungJoo Ham, and Jaeyun Jung, "Cloud-based Testbed for On-Device AI Application," Proc. of KIISE Korea Computer Congress (KCC), Excellent Presentation Paper Award, Jun. 2019.

    3. Geunsik Lim and Young Ik Eom, "UNAS: User-space NUMA-aware scheduler for optimizing memory utilization and performance," Proc. of KICS Winter Conference, Jan. 2014.

    4. Geunsik Lim, Taehun Kim, R.J.W.E. Lahaye, and Young Ik Eom, "HTCondor-based distributed compiler network," Proc. of KIISE Fall Conference, Excellent Paper Award, Nov. 2013.

    5. Geunsik Lim, Keonwoo Kim, and Young Ik Eom, "Notrace32-based real-time remote debugging method for optimization of mobile OS," Proc. of KICS Summer Conference, Jun. 2013.

    6. Geunsik Lim, Changwoo Min, and Young Ik Eom, "Dynamic thread scheduling framework for improving user responsiveness," Proc. of KIISE Korea Computer Congress, Jun. 2013.

    7. Geunsik Lim, Younghyun Joo, and Young Ik Eom, "CoCloud: Revision control based collaborative cloud system for contents cooperation," Proc. of KICS Joint Conference on Communications and Information, May 2013.

    8. Geunsik Lim, Seho Lee, and Young Ik Eom, "BioMP: Migrating OpenMP into Bionic library for Android platform based on ARM multicore," Proc. of KICS Winter Conference, Excellent Paper Award, Jan. 2013.

    9. Geunsik Lim, Keonwoo Kim, and Young Ik Eom, "Notrace32: Tracing technology to analyze kernel of Android platform in real-time," Proc. of KIISE Summer Workshop on Computer Communications, Information Network Society, Aug. 2012.

    10. Geunsik Lim "Android Platform Internals", 3rd CELF Korea Technical Jamboree, 2008, Seoul, Korea

    11. Geunsik Lim "Opensource Business Model and Android Platform", KIPA (Korea IT Industry Promotion Agency), 2008, Seoul, Korea




    [Domestic Android Conferences]
    1. Geunsik Lim "Task parallelism with KTC & Bionic/OpenMP for Multicore-Based Android", 11th Korea Android Conference, 2013, www.kandroid.org

    2. Geunsik Lim "Multicore-Based Memory Issues and Development Tips on ICS", Samsung Developer Day 2012 (Galaxy S III), Samsung Electronics, Seoul, Korea

    3. Geunsik Lim "Solving memory leak to avoid LMK operation of Android applications: Valgrind on ARM", 9th Korea Android Conference, 2012, www.kandroid.org

    4. Geunsik Lim "Issues that smart device platform developers must know", Smart Device Developer Conf, KOSTA(Korea Software Technology Association)/MDS Technology, Seoul, Korea, 2011

    5. Geunsik Lim "Android Kernel Debugging : Ftrace", 8th Korea Android Conference, 2011, www.kandroid.org

    6. Geunsik Lim "Android Network and Enhancement", 7th Korea Android Conference, 2011, www.kandroid.org

    7. Geunsik Lim "Chrome WebOS Based on Cloud Computing", 6th Korea Android Conference, 2010, www.kandroid.org

    8. Geunsik Lim "Optimization Android Performance with GCC Compiler", 5th Korea Android Conference, 2010, www.kandroid.org

    9. Geunsik Lim "Prelink and Preload Based Zygote Analysis", 4th Korea Android Conference, 2009, www.kandroid.org

    10. Geunsik Lim "Understanding repo to manage android full sources", 3rd Korea Android Conference, 2009, www.kandroid.org

    11. Geunsik Lim "Android Porting and Understanding Development Process", 2nd Korea Android Conference, 2008, www.kandroid.org

    12. Geunsik Lim "Linux Based Android Kernel Issues", 1st Korea Android Conference, 2008, www.kandroid.org




    [Patents (Applied): Since 2010]
    1. Geunsik Lim, "Enhancing application performance with virtual memory partitioning technique", 2013

    2. Geunsik Lim, "Operation Zone Based SMP Scheduler for Effective Task Migration on Multicore Systems", 2012

    3. Geunsik Lim, Myung-June Jung, Sang-Bum Suh, Sung-Min Lee, "Apparatus and method for snapshot image segmentation", Application number 13/105,007, US 2012/0101996

    4. Geunsik Lim, "Apparatus and method for managing memory in consideration of user response time", European Patent Application EP2386957, EP20110165602, Publication Date 11/16/2011

    5. Geunsik Lim, Sang-bum Suh, Ju-pyung Lee, "Apparatus and method for managing memory", United States Patent Application 20110283080, Publication Date 11/17/2011




    [Acknowledgements Related Papers]
    1. Paul E. McKenney, "When Do Real Time Systems Need Multiple CPUs?", IBM Linux Technology Center, Real Time Linux Workshops 2010, Oct-24-2010




    [Awards]
    1. Best Code Review Award from DevXday, "Code Review Contest for 2019 year", Samsung Electronics, Sep-25-2019

    2. Best Opinion Award from 2019 Post Conference, EIRIC (Electronic & Information Research Information Center), "Best Opinion Event for 2019 year", Jul-30-2019

    3. Samsung Best Paper Award from SAIT of Samsung Electronics, "BB: Booting Booster for Consumer Electronics with Modern OS," Gold Award, Seoul, KR, Nov-28-2016

    4. IEEE CE Chester Sall Award from IEEE Consumer Electronics(CE) Society, "Virtual memory partitioning for enhancing application performance in mobile devices," 1st Place Best Paper, Lasvegas, US, Jan-11-2016

    5. Excellent Research Award from ICC of Sungkyunkwan University, "Excellent Research Paper for 2013 year", 2014

    6. Product Innovation Award from SAIT Director of Samsung Electronics, "Deploying the Full-HD Camcorder with Realtime Linux", 2010

    7. Bravo Award from CEO of Samsung Electronics, "Linux-Based DTV Enhancement and Deployment (VxWorks-to-Linux migration)", 2007




    [Publications]
    1. "라즈베리파이로 시작하는 핸드메이드 IoT", 448 pages, 173*230mm, 851g, ISBN 9791190014489, Sep-27-2019, (in Korean)




    [Certifications]
       Oracle Certified Professional 9i (OCP 9i Administrator)

       Cisco Certified Network Professional (CCNP)

       Driver License 1st Class (Road Traffic Authority Driver's License Examination Office)

       Linux Master 1st Class (Korea Association for ICT Promotion)

       Engineer Information Processing (Human Resources Development Service of Korea)




    [Military Service]
       Army 7273 Troop - Infantry Branch (26 months)




    [Membership]
       IEEE Membership 2012 ~

       IEEE Consumer Electronics Society Membership 2012 ~

       IEEE Communications Society Membership 2013 ~

       BBB Korea Volunteer Interpreter 2010 ~

       Samsung Electronics Software Membership 1999 ~ 2002




      This webpage is modified on Jan-20-2019.