Youngjae Kim

Assistant Professor
Graduate School of Computer EngineeringAjou University
Suwon, South Korea 
Email: youkim a.t.
Office: No. 704 Paldal Hall
      (Photo Taken in Spring 2014)

Short Bio

Youngjae Kim is an assistant professor in the Graduate School of Computer Engineering at Ajou University. He manages the Future Systems and Storage Technologies (FAST) Laboratory where a wide spectrum of research activities in the areas of computer systems, operating systems, distributed and parallel systems and storage technologies are being undertaken. He received his B.S. degree in computer science from Sogang University in 2001, and his M.S. in computer science from KAIST (in 2003) (Advisor: Prof. Seung-Ryoul Maeng), and his Ph.D. in computer science and engineering from Pennsylvania State University (Primary Advisor: Prof. Anand Sivasubramaniam, Co-Advisor: Prof. Bhuvan Urgaonkar). After his Ph.D., he had worked as a staff scientist at the Oak Ridge National Laboratory (ORNL) for U.S Department of Energy in 2009-2015, where he was fortunate to work with a number of great researchers, including Galen Shipman, Sudharshan Vazhkudai, Scott Atchley, Geoffroy R. Valle ́e, Sarp Oral and Feiyi Wang. In 2014-2015, he was a team leader for Non-volatile Memory, exploring non-volatile memory devices from perspective including memory extension, burst buffer file systems, and out-of-core data analytics for future extreme compute and data systems. In 2011-2014, he had been affiliated with Georgia Institute of Technology as an adjunct professor in the School of Electrical and Computer Engineering. He had also worked as a research engineer in the Embedded OS team at ETRI in 2003-2004. 

Research Interest

I'm generally interested in areas such as computer systems, operating systems, distributed systems, parallel systems, file and storage systems, and data analytic systems. 
  • Specifically, my recent work is pursued for research on computing systems with an emphasis on file and storage systems for systems' performance, high reliability, and availability. 
  • In addition, my work is focused for distributed systems environment, data center, high performance computing environment.
  • Recently I'm interested in Android mobile platform for system software stack design and implementation. 
Recent Selected papers authored or coauthored (Full List of Publications)
  • [SC’15] AnalyzeThis: An Analysis Workflow-Aware Storage System 
  • [FAST’15] LADS: Optimizing Data Transfers using Layout-Aware Data Scheduling (pdf) 
  • [CAL’15] Synchronous I/O Scheduling of Independent Write Caches for an Array of SSDs (pdf) 
  • [SC’14] Best Practices and Lessons Learned from Deploying and Operating Large-Scale Data-Centric Parallel File systems (pdf) 
  • [TC’14] Coordinating Garbage Collection for Arrays of Solid-state Drives (pdf) 
  • [FAST’13] Active Flash: Towards Energy-Efficient, In-Situ Data Analytics on Extreme-Scale Machines (pdf) 
  • [SIGMETRICS’12] D-Factor: A Quantitative Model of Application Slow-Down in Shared Service Systems with Multiple Resources (pdf) (slides)
Current Students
  • Antique Muhammad (Ph.D., co-advised by Tae-Sun Chung)
  • Jihwan Jung (M.S., co-advised by Tae-Sun Chung)
  • Khan Awais (M.S.)
  • Ronnie Mativenga (M.S.)
  • Jaewon Choi (B.S.)
  • Changgyu Lee (B.S.)
  • Tae-Hawn Kim (B.S.)
  • 2015: Operating Systems, Computer Architecture 
Operating Systems Materials 
    Research Guide