Professor

Youjip Won

He is currently Professor at Division of Electrical and Computer Engineering, Hanyang University, Seoul Korea. He is leading Embedded Software System Lab. He did his BS and MS in Dept. of Computer Science, Seoul National University, Seoul, Korea in 1990 and 1992, respectively. He received his Ph. D in Computer Science from University of Minnesota in 1997. Before joining Hanyang University in 1999, he worked at Intel Corp. as Server Performance Analyst. His research interests include Network Traffic Modeling, Analysis and Characterization, Multimedia system and networking, File and Storage subsystem , Lower power Storage System. In 2006, Multimedia File System project funded by Samsung Electronics was awarded “Best Academy-Industry Collaboration Practice in Samsung Electronics”. In 2007, he was awarded “National Research Lab” grant which is highly selective and prestigeous governmental grant.

Email: yjwon@hanyang.ac.kr

Homepage: http://dmclab.hanyang.ac.kr/~yjwon/index.php/Main_Page

Postdoc.

Seongjin Lee

Seongjin is a PostDoc. at Embedded Software Systems Laboratory in Department of Computer Software at Hanyang University, Seoul Korea. He did his BS and MS in Department of Electronics and Computer Engineering, Hanyang University, Seoul Korea in 2006 and 2008, respectively. He received his Ph. D in Computer Engineering in the same university in 2015. His research interests include system performance, measurements, analysis, characterization, and classification.

Email: insight@hanyang.ac.kr

Homepage: https://sites.google.com/site/makeinsight/

  • Balgeun Yoo, Seongjin Lee, Youjip Won, “Power Consumption Signature: Characterizing an SSD”, Accepted for IEICE Transactions., Vol.E99-D, No.7, pp.-, Jul. 2016.
  • Hu-ung Lee, Seongjing Lee, Jae-woon Kim and Youjip Won, “Parallelizing SHA-1″ (errata), IEICE Electronics Express, 2015 Vol. 12, No.12, pp 0150371-20150371, doi:10.1587/elex.12.20150371, url
  • Chanhyun Park, Seongjin Lee and Youjip Won, “An Analysis on Empirical Performance of SSD RAID”, In Proceedings of 29th International Symposium on Computer and Information Sciences (ISCIS 2014), (Lecture Notes in Information Sciences and Systems 2014), Krakow, Poland, 27-28, Oct, 2014
  • Kyuil Kim, Eunryoung Lim, Seongjin Lee, Youjip Won, “Real-time IO trace analysis of smartphone users”, Accepted for Publication, 2nd International Conference on Advances on Computer , Electrical and Electronic Engineering (ICACEEE 2014), Paris, France, 7-8, July, 2014
  • Chanhyun Park, Youjip Won “Chanhyun Park, Seongjin Lee and Youjip Won, “An Analysis on Empirical Performance of SSD RAID”, Accepted for Publication, 29th International Symposium on Computer and Information Sciences (ISCIS 2014),(Lecture Notes in Electrical Engineering), Krakow, Poland, October 27-28, 2014
  • Sooman Jeong, Kisung Lee, Seongjin Lee, Seoungbum Son, Youjip Won, “I/O Stack Optimization for Smartphones”, 2013 USENIX Annual Technical Conference (USENIX ATC ’13), June 26-28, 2013, San Jose, CA, USA, (Acceptance Ratio: 14%, Best Paper Award)
  • Seongjin Lee, Youjip Won, “Design and Implementation of Cache Manager for Hybrid Storage”, The Third International Conference on Digital Information Processing and Communications (ICDIPC 2013), Jan. 30, 2013 – Feb. 1, 2013, Dubai, UAE
  • 이성진, 원유집, “하이브리드 스토리지 시스템을 위한 마이닝 기법”, 대용량 MLC NAND 기반 SSD 기술 워크샾, 2013년 1월 24일 ∼ 26일, 용평리조트
  • 김해성, 김주현, 이성진, 원유집, “가상 SSD 시뮬레이터”, 한국정보과학회, 제37회 추계학술발표회, 2010년 11월
  • Joohyun Kim, Haesung Kim, Seongjin Lee, Youjip Won, “FTL Design for TRIM Command”, 15th International Workshop on Software Support for Portable Storage (IWSSPS 2010), Scottsdale, AZ, USA, October 28, 2010
  • Joohyun Kim, Haesung Kim, Seongjin Lee, Youjip Won, “VSSIM : Virtual SSD Simulator”, 9th USENIX Symposium on Operating System Design and Implementation (OSDI ’10), Vancouver, BC, Canada, October 4-6, 2010

Research Activities

  • Talk, “Efficient Traffic Classifier in Wireless Network”, KT. (2008.07.22)
  • Development of Tools for Analyzing Wireless Internet Traffic in collaboration with Department of Access Networks, SK Telecom. (2007.09 ~ 12)

PhD Students

Dokeun Lee

Dokeun Lee is a PhD candidate in Department of Computer Science at Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are focused on NVM management system which includes garbage collection, persistent heap, and NVM data structures.

Email: matureelf@hanyang.ac.kr

Minjae Cho

Minjae Cho is a PhD student at Dept. of Electrical and Computer Engineering, Hanyang University. He is a member of Embedded Software System Laboratory at Hanyang University. His research interests are focused on Network, Security, and Operating System.

Email: popeye@ece.hanyang.ac.kr

  • Dokeun Lee, Youjip Won, “Booting Linux Faster” , In proceedings of 2012 3rd IEEE International Conference on Network Infrastructure and Digital Content (IC-NIDC 2012), Sept. 21-23, Bejing, China

Hu-Ung Lee

Hu-Ung Lee is a PhD Student at Dept. of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory at Hanyang University.

Email: oihtoto@hanyang.ac.kr

Sunyoung Kim

Sunyoung Kim is a PhD student at Embedded Software System Laboratory at Department of electronics and computer engineering, Hanyang University. His research interests are focused on SSD, Traffic Classification and Data Mining.

Email: ksycafe@ece.hanyang.ac.kr

Taeho Hwang

Taeho Hwang is a PhD candidate in the Department of Computer Science at Hanyang University. He is working in Embedded Software Systems Laboratory. His research interests are in file systems and storage systems to efficiently exploit persistent memory.

Email: htaeh@hanyang.ac.kr

Changhyun Park

Changhyun Park is a PhD student at Embedded Software System Laboratory at Department of Computer Science, Hanyang University. His research interests are focused on the mathematical model of SSD.

Email: pch1984@hanyang.ac.kr

  • 박창현, 조석희, 원유집 “리눅스상의 각 파일 시스템에서의 SSD성능 실험” 한국정보과학회 제36회 정기총회 및 추계학술발표회 (2009. 11)

Minsuk Choi

Minsuk Choi is a PhD student at Embedded Software System Laboratory at Department of Electronics and Computer Engineering, Hanyang University. His research interests are focused on Operating system, File system, Storage subsystem and big data.

Email: 0310cms@hanyang.ac.kr

Jinsoo Yoo

Jinsoo Yoo is a Ph.D student at Computer Science, Hanyang University. His research area is storage system including SSD simulator and file systems. He is developing a virtual machine based SSD simulator which is called VSSIM. He is also interested in optimizing and extending the functionality of the F2FS filesystem.

Email: jedisty@hanyang.ac.kr

  • Jinsoo Yoo and Youjip Won, “Modeling IO Latency of SSDs”, In Proceedings of the 4th IEEE International Conference on Network Infrastructure and Digital Content (IC-NIDC), Friendship Hotel, Beijing, China, 19~21, Sep, 2014
  • Jinsoo Yoo, Youjip Won, Sooyong Kang, Jongmoo Choi, Sungroh Yoon, Jaehyuk Cha, “Analytical Model of SSD Parallelism”, In Proceedings of the 4th International Conference on Simulation and Modeling Methodologies, Technologies and Applications(SIMULTECH), Aug 2014
  • Jinsoo Yoo, Youjip Won, Joongwoo Hwang, Sooyong Kang, Jongmoo Choi, Sungroh Yoon and Jaehyuk Cha, “VSSIM: Virtual Machine based SSD Simulator”, IEEE 29th Symposium on Mass Storage Systems and Technologies (MSST 2013), Long Beach, California, USA, May 6-10, 2013

joongwoo

Joongwoo Hwang

Joongwoo Hwang is a PhD Student at Dept. of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory at Hanyang University. His research interests are focused on OS and Embedded System.

Email: tearoses@hanyang.ac.kr

  • Jinsoo Yoo, Youjip Won, Joongwoo Hwang, Sooyong Kang, Jongmoo Choi, Sungroh Yoon and Jaehyuk Cha, “VSSIM: Virtual Machine based SSD Simulator”, IEEE 29th Symposium on Mass Storage Systems and Technologies (MSST 2013), Long Beach, California, USA, May 6-10, 2013

MS Students

M_Photo_First_View

Jihyun Kim

Jihyun Kim is a MS Student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are Operating system and Embedded system software. He is focusing on improving scalability about common library and Database system based on Non-volatile memory.

Email: wlgus3018@hanyang.ac.kr

오준택

Joontaek Oh

Joontaek Oh is a MS Student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are File system and Storage. He is researching the improvement of F2FS and EXT4.

Email: na94jun@gmail.com

손성배

Seongbae Son

Seongbae Son is a MS Student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are File system and Storage. He is researching to improve crash consistency and performance of file system.

Email: seongbae.son@gmail.com

노연진

Yeonjin Noh

Yeonjin Noh is a MS student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are focused on Linux kernel feature, especially page cache and memory management.

Email: nyg0813@gmail.com

최경열

Gyeongyeol Choi

Gyeongyeol Choi is a MS Student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are file system and storage, especially the technique that reduces the overhead for ordering guarantee about I/O.

Email: chl4651@gmail.com

조정우

Jungwoo Jo

Jungwoo Jo is a MS student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System  Laboratory. His research interests are File system and Machine Learning. He is researching the I/O Pattern Optimization of SQLite in Android.

Email: jungwoo5759@gmail.com

Yunjuseong

Juseong Yun

Juseong Yun is a MS student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are Android and Machine Learning. He is researching SQLite I/O Pattern Optimization in Android

Email: yunjuseong05@gmail.com

img1

Sundoo Kim

Sundoo Kim is a MS Student at Department of Computer Science, Hanyang University. He is a member of Embeded Software System Laboratory. His research interests are File system and Storage. He is researching on the performance improvement of SQLite database.

Email: sksioi1234@gmail.com

  • 김선두, 윤주성, 원유집, “스마트폰 워크로드의 생성” 한국정보과학회, 2017 고신뢰컴퓨팅 하계워크샵 (WDCS 2017), 2017년 8월 16 – 8월 18일, 제주대학교  국제교류회관, 제주
  • 김선두, 윤주성, 원유집, “스마트폰 워크로드의 생성” 한국정보과학회, 2017 고신뢰컴퓨팅 하계워크샵 (WDCS 2017), 2017년 8월 16 – 8월 18일, 제주대학교  국제교류회관, 제주

123

Inyeop Son

Inyeop Son is MS student at Department of Computer Science, Hanyang University. He is a member of Embedded Software System Laboratory. His research interests are Android and Database. He is researching the I/O pattern and SQLite in Android.

Email: son901217@naver.com

Intern

Alumni

  • 천승용(Cheon, Seungyong), LG CTO, 2016, e-mail
  • 손한근(Son, Hankeun ), , 2016, e-mail
  • 유밝은(Yoo, Balgeun), LG CTO, 2016, e-mail
  • 정재민(Jung, Jaemin), Texas A&M Univ., 2016, e-mail
  • 이성수(Lee, Seongsu), LG CTO, 2016, e-mail
  • Dam Quang Tuan, , 2016, e-mail
  • 이건우(Lee, Keonwoo), Future Systems, 2016, e-mail
  • 임은령(Lim, Eunryoung), 네이버, 2016, e-mail
  • 이원건(Lee, Onegun), 삼성전자, 2016, e-mail
  • 김명식(Kim, Myungsik), 삼성전자, 2016, e-mail
  • 이철희(Lee, Choelhee), 아리온 테크놀로지, 2015, e-mail
  • 박찬현(Park, ChanHyun), 글루시스, 2015, e-mail
  • 박동일(Park, Dongil), 삼성전자, 2015, e-mail
  • 임경렬(Lim, Kyeongyeol), 2015, e-mail
  • 김준엽(Kim, Junyeop), 티맥스데이터, 2015, e-mail
  • 김규일(Kim, Kyuil), LG CTO, 2014, e-mail
  • 정수만(Jeong, Sooman), 삼성전자, 2014, e-mail
  • 이기성(Lee, Kisung), 삼성전자, 2013, e-mail
  • 신진철(Shin, Jinchul), SK Planet, 2013, e-mail
  • 김재운(Kim, Jaewoon), , 2013, e-mail
  • 정창훈(Jeong, Changhun), 매크로 임팩트(주), 2013, e-mail
  • 조석희(Cho, Seokhei), LG CTO, 2013, e-mail
  • 김종민(Gim, Jongmin), Texas A&M Univ., 2012, e-mail
  • 김해성(Kim, Haesung), LG CTO, 2012, e-mail
  • 홍성우(Hong, Sungwoo), , 2011, e-mail
  • 唐 智(Tang Zhi), , 2011, e-mail
  • 김주현(Kim, Joohyun), 삼성전자, 2011, e-mail
  • 이철목(Lee, Chulmok), , 2011, e-mail
  • 구자진(Koo, Jajin), 이오테크닉스, 2011, e-mail
  • 전태종(Quan, TaiZhong), , 2011, e-mail
  • 윤대영(Yoon, Daeyoung), 포토트리, 2011, e-mail
  • 최정헌(Choi, JeongHeon), 소프트뱅크, 2010, e-mail
  • 이광호(Lee, Kwangho), 삼성전자, 2010, e-mail
  • 박진희(Park, Jinhee), 삼성전자, 2009, e-mail
  • 최민석(Choi, Minseok), 매크로 임팩트(주), 2009, e-mail
  • 신형종(Shin, Hyungjong), 삼성전자, 2008, e-mail
  • 장재혁(Chang, Jaehyeok), , 2008, e-mail
  • 조성호(Cho, Sungho), , 2008, e-mail
  • 한석희(Han, SeokHee), , 2008, e-mail
  • 어해동(Yeo, Dylan), , , e-mail
  • 민재홍(Min, Jaehong), , , e-mail
  • 김요환(Kim, Yohwan), , , e-mail
  • Dashdorj Yamkhin, Mongolia Univ. of Science and Technology, , e-mail
  • 반종명(Ban, Jong-Myeong), , , e-mail
  • 전병길(Jeon, Byunggil), , 2007, e-mail
  • 김은기(Kim, Eunki), , 2007, e-mail
  • 김락기(Kim, Rak-ki), , 2007, e-mail
  • 김영진(Kim,Youngjin), NHN, 2007, e-mail
  • 박동주(Park, Dongju), LG, 2007, e-mail
  • 박재석(Park, Jaeseok), 삼성전자, 2007, e-mail
  • 이모원(Lee, Mowon), 삼성전자, 2007, e-mail
  • 이주훤(Lee, Juhwon), (주)만도, 2007, e-mail
  • 정형원(Jung, Hyungwon), , 2007, e-mail
  • 정원민(Jung, Wonmin), , 2007, e-mail
  • 한영수(Han, Youngsoo), , , e-mail
  • 김효준(Kim, Hyojun), , , e-mail
  • 노승현(Noh, Seunghyun), , , e-mail
  • 류재민(Ryu, Jaemin), 삼성 종합기술원, 2006, e-mail
  • 고영준(Goh, Youngun), 마이크로디지털, 2006, e-mail
  • 노승현(No, Seunghyun), (주)만도, 2006, e-mail
  • 이시창(Lee, Sichang), 삼성 S1, 2006, e-mail
  • 한영수(Han, Youngsoo), 삼성전자, 2006, e-mail
  • 방창대(Bang, Changdae), , , e-mail
  • 강성주(Kang, Sungjoo), ETRI, 2005, e-mail
  • 김재한(Kim, Jaehan), , 2005, e-mail
  • 윤영성(Yun, Youngsung), 삼성전자, 2005, e-mail
  • 김효준(Kim, Hyojun), , 2005, e-mail
  • 장인광(Jang Ingwang), 삼성전자, 2005, e-mail
  • 장형규(Jang, Hyeonggyu), LG전자, 2005, e-mail
  • 김두한(Kim, Duhan), 삼성전자, 2004, e-mail
  • 강광석(Gang, Gwangseok), 삼성전자, 2004, e-mail
  • 천지원(Chen, Jiwon), 삼성전자, 2004, e-mail
  • 송동현(Song, Donghyun), 삼성전자, 2004, e-mail
  • 이용만(Lee, Youngman), KOTBA, 2004, e-mail
  • 김진용(Kim, Jinyong), 한국전자통신연구원, 2004, e-mail
  • 양승헌(Yang, Seunhyun), LG전자, 2004, e-mail
  • 최정완(Choi, Jungwan), LG 전자 MC연구소, 2003, e-mail
  • 송승호(Song, Seungho), 삼성전자, , e-mail
  • 심보욱(Shim, Bouk), SK Teletech, , e-mail
  • 오창영(Oh, Changyoung), Reakosys, , e-mail
  • 차승일(Cha, Seungil), TG삼보컴퓨터, , e-mail
  • 백국실(Baek, Guksil), Nexdigm, 2002, e-mail
  • 박진연(Park, Jinyeon), ZTE Future Tel, , e-mail
  • 김범은(Kim, Beopeun), 삼성전자, 2002, e-mail
  • 조경선(Cho, Kyungsun), 삼성전자, 2001, e-mail

Collaborators

Jongmoo Choi

Jongmoo Choi is an Associate Professor at School of Computer Science and Engineering, Dankook University, Korea. He received the BS degree in oceanography from Seoul National University, Korea, in 1993 and the MS and PhD degrees in computer engineering from Seoul National University in 1995 and 2001, respectively. His research interests include file systems, flash memory, embedded systems, and virtualization technology.

Email: choijm@dankook.ac.kr

Homepage: http://embedded.dankook.ac.kr/~choijm/

Jeongseok Ha

Jeongseok Ha is currently an Associate Professor of Electrical Engineering at KAIST. He received 2003 Ph. D. in Electrical and Computer Engineering, Georgia Institute of Technology, U.S.A. His research interests include Rate-adaptive channel coding, Channel coding for storages and communication systems, Channel codes defined on graphs such as low-density-parity-check(LDPC) codes, Tornado codes, Turbo codes, Information theorical security: Wiretap channel.

Email: jsha@ee.kaist.ac.kr

Homepage: http://ccit.kaist.ac.kr/

Kangyoon Lee

Kangyoon Lee is an Associate Professor of Department of Electronics Engineering, SungKyunKwan University. He received the B.S., M.S. and Ph.D. degrees in the School of Electrical Engineering from Seoul National University, Seoul, Korea, in 1996,1998, and 2003, respectively. His research interests include implementation of CMOS RF transceiver, analog integrated circuits, and analog/digital mixed-mode VLSI system design.

Email: kylee@konkuk.ac.kr

Homepage: http://www.iclab.co.kr/

Jaekyun Moon

Jaekyun Moon is a Professor of Electrical Engineering at KAIST. Prof. Moon received a BSEE degree with high honor from Stony Brook University and M.S. and Ph.D. degrees in Electrical and Computer Engineering at Carnegie Mellon University. Prof. Moon’s research interests are in the area of channel characterization, signal processing and coding for data storage and digital communication. He also worked as Chief Technology Officer at Link-A-Media Devices Corp. in 2008. He is an IEEE Fellow.

Email: jmoon@kaist.edu

Homepage: http://comstolab.kaist.ac.kr/

Incheol Park

Incheol Park is a Professor in the Department of Electrical Engineering and Computer Science at KAIST. He received the B.S. degree in Electronics Engineering from Seoul National University in 1986, the M.S. and Ph.D. degrees in Electrical Engineering from Korea Advanced Institute of Science and Technology(KAIST) in 1988 and 1992, respectively. His current research interests include CAD algorithms for high-level synthesis and VLSI architectures for general-purpose microprocessors. He is a senior member of the IEEE.

Email: icpark@ee.kaist.ac.kr

Homepage: http://ics.kaist.ac.kr/

Yeonseung Ryu

Yeonseung Ryu is an Associate Professor at Department of Computer Software, Myongji University, Korea. He received his BS, MS and Ph.D in the Dept. of Computer Science and Statistics, Seoul National University, Korea. His research interests include Operating Systems, Storage Systems, Multimedia Systems, and Network Systems.

Email: ysryu@mju.ac.kr

Homepage: http://syso.mju.ac.kr/

Ilhoon Shin

Ilhoon Shin is a Professor in the Department of Electrical Engineering and Computer Science at KAIST. He received the B.S. degree in Electronics Engineering from Seoul National University in 1986, the M.S. and Ph.D. degrees in Electrical Engineering from Korea Advanced Institute of Science and Technology(KAIST) in 1988 and 1992, respectively. His current research interests include CAD algorithms for high-level synthesis and VLSI architectures for general-purpose microprocessors. He is a senior member of the IEEE.

Email: ilhoon.shin@snut.ac.kr

Homepage: http://blue.snut.ac.kr/~ihshin/

Sungroh Yoon

Sungroh Yoon is an Assistant Professor of Electrical Engineering at Seoul University, Seoul, Korea. His research interests include high-performance solid-state drive (SSD) architecture based on NAND flash and other emerging non-volatile memory devices. He is also interested in SSD-based energy- efficient system design and biocomputation.

Email: sryoon@korea.ac.kr

Homepage: http://acl.korea.ac.kr/

Industry Collaborators

Samsung

LG

ETRI