(With my daughter in Cancun in August 2014) 


   Youngjae Kim (PhD)

     Assistant Professor
     Department of Computer Science and Engineering
     Sogang University
     Seoul, Republic of Korea         

     Laboratory for Advanced System Software   
     Graduate School of Computer Science and Engineering 
     Sogang University 

     Email: youkim a.t. sogang.ac.kr   
     Office: AS911
     Address: 35 Baekbeom-ro, Mapo-gu, Seoul Republic of Korea, 04107

Professional Experience  
  • Research Scientist / Research Staff Member, Oak Ridge National Laboratory for US Department of Energy, Oak Ridge, TN, USA (2009 - 2015) 
  • Team leader for Non-Volatile Memory File System Team, National Center for Computational Sciences (2014-2015)
    • Explored non-volatile memory devices from several perspectives including memory extension, burst buffers, out-of-core data analytics, and fault tolerance for extreme compute and data system
    • Research Staff Member -- Level III (2012 - 2015) 
    • Associate Research Staff Member -- Level II (2009-2011)

  • Assistant Professor, Department of Software and Computer Engineering, Ajou University, Suwon, Korea (2015-2016) 
    • Director of FAST Lab. (Future Systems and Storage Technologies Laboratory), Ajou University   
  • Adjunct Professor, School of Electrical and Computer Engineering, Georgia Institute of Technology (2011-2014) 
  • Researcher, Embedded OS Team, ETRI, Daejeon, Korea (2003-3004)


Recent Publications (Full List of Publications)
  • [USENIX HotStorage'17] Chintan Chavda, Ethan C. Ahn, Yu-Sheng Chen, Youngjae Kim, Kalidas Ganesh, Junghee Lee, Vulnerability Analysis of On-Chip Access-Control Memory, 9th USENIX Workshop on Hot Topics in Storage and File Systems (HotStorage) (2017). (Accepted)
  • [TC'17] Kalidas Ganesh, Youngjae Kim, Monobrata Debnath, Sungyong Park, Junghee Lee, LAWC: Optimizing Write Cache using Layout-Aware I/O Scheduling for All Flash StorageEEEE Transactions on Computer (TC) (2017). (Accepted)
  • [CAL'17] Junghee Lee, Kalidas Ganesh, Hyuk-Jun Lee, Youngjae KimFeSSD: A Fast Encrypted SSD Employing On-Chip Access-Control MemoryIEEE Computer Architecture Letters (IEEE CAL) (2017). (Accepted) 
  • [CCGRID'17] Matt Lee, Hyogi Sim, Youngjae Kim, Sudharshan Vazhkudai, AnalyzeThat: A Programmable Shared-Memory System for an Array of Processing-In-Memory Devices, IEEE/ACM International Symposium on Cluster, Cloud and Grid Computing (CCGRID) (2017), Madrid, Spain, May 2017. 
    (Accepted in short paper)
  • [TPDS'17] Youngjae Kim, Scott Atchley, Geoffroy R. Valle ́e, Matt Lee, Galen M. Shipman, Optimizing End-to-End Big Data Transfers over Terabits Network InfrastructureIEEE Transactions on Parallel and Distributed Systems (IEEE TPDS)Vol. 28, No. 1, pp. 188-201, January 2017. [IEEE Explore] (Impact Factor: 2.17, According to Thomson Reuters' 2013 Journal Citation Report)
  • [PEVA'16] Seung-Hwan Lim and Youngjae Kim, A Quantitative Model of Application Slow-Down in Multi-Resource Shared SystemsPerformance Evaluation (PEVA) (2016), http://dx.doi.org/10.1016/j.peva.2016.10.004 [pdf] 
  • [USENIX FAST'15] Youngjae Kim, Scott Atchley, Geoffroy R. Valle ́e, Galen M. Shipman,LADS: Optimizing Data Transfers using Layout-Aware Data Scheduling, In Proceedings of the USENIX Conference on File and Storage Technologies (USENIX FAST) (2015), San Jose, CA, February, 2015. (Acceptance Rate: 28/130 = 21.5%) [paper]
  • [SC'15] Hyogi Sim, Youngjae Kim, Sudharshan Vazhkudai, Devesh Tiwari, Ali Anwar, Ali Butt, Lavanya Ramakrishnan, AnalyzeThis: An Analysis Workflow-Aware Storage System, In Proceedings of the 2015 ACM/IEEE International Conference on High Performance Computing, Networking, Storage and Analysis (SC) (2015), Austin, TX, November, 2015. (Acceptance Rate: 79/358 = 22.0%) [paper]

Research Interest

  •  Research Areas: Operating System, Embedded Systems, High Performance Computing, Cloud Computing
  •  Interest Areas: File and Storage Systems, Distributed File Systems, End-to-End I/O Optimization, Cache Design and Optimization, Application System-level Profiling, Flash Memory, Capacity Planning for Storage in Data Centers, Computer System Security 


  • Current Graduate Students
    • Awias Khan, Integrated M.S./Ph.D. student, CSE, Sogang University, 2015-
    • Ronnie Mativenga, Integrated M.S./Ph.D. student, Ajou University, 2015-
    • Donghyun Kim, M.S. student, CSE, Sogang University, 2017-
    • Tae-Uk Kim, M.S. student, CSE, Sogang University, 2017-
    • Hyungi Byun, M.S. student, CSE, Sogang University, 2017-
    • Preethika Kasu, M.S. student, CSE, Ajou University, 2016-
    • Prince Hama, M.S. student, CSE, Ajou University, 2016-
  • Current Undergraduate Students
    • Changgyu Lee, B.S. student, CSE, Ajou University, 2013-
    • Jinwoo Ahn, B.S. student, CSE, Sogang University, 2013- 
  • Former Students

  • Korea NRF (National Research Foundation) Research Grant for Young Researchers, 2015-2018
  • Outstanding research award, Oak Ridge National Laboratory, 2012
  • Pennsylvania State University Engineering Scholarship, 2004-2007
  • Korea government scholarship (Ministry of Information and Communication), 2004-2006