Gwangsun Kim

Assistant Professor @ POSTECH

About me

I am an assistant professor at the Department of Computer Science and Engineering, POSTECH. Before joining POSTECH, I worked at Arm on improving Arm processor IPs for server systems. I earned my Ph.D. (2016) and M.S. (2012) from KAIST in Computer Science under Prof. John Kim, and B.S. (2010) from POSTECH in Electronic and Electrical Engineering and Computer Science and Engineering (double major).


I am looking for ambitious graduate and undergraduate students who want to do research in computer systems. If you are interested, please contact me at g.kim@postech.ac.kr

Employment

  • Assistant Professor, POSTECH, Nov. 2018 - Present
  • Senior Research Engineer, Arm Inc., Mar. 2018 - Oct. 2018
  • Senior Performance Engineer, Arm Inc., Sep. 2016 - Mar. 2018
  • Research Intern, NVIDIA, Jun. 2015 - Sep. 2015
  • Research Intern, Samsung Electronics, Jul. 2014 - Sep. 2014

Research

I am interested in various topics in computer architecture and its interaction with different layers of computer system including operating system and programming models. Below are some of the topics I have or plan to work on:

  • Large-scale systems
    • Datacenter-scale system
    • High-performance computing system (or supercomputer)
  • Data-intensive computing
    • Big data analytics
    • Machine learning
  • Storage-Class Memory (SCM)
  • Near-Data Processing (NDP)
  • Processor microarchitecture
    • CPU and GPU microarchitecture
    • Memory system
  • Interconnection network
    • Memory network
    • Large-scale (off-chip) network
    • Network-on-Chip (NoC)

Publications

Google Scholar profile: Link

2018


  • TCEP: Traffic Consolidation for Energy-Proportional High-Radix Networks
    • Gwangsun Kim, Hayoung Choi, and John Kim
    • The 45th International Symposium on Computer Architecture (ISCA) (Accept. rate: 16.9%)
    • [ Paper ] [ Slides ]

2017

  • Toward Standardized Near-Data Processing with Unrestricted Data Placement for GPUs
    • Gwangsun Kim, Niladrish Chatterjee, Mike O'Connor, and Kevin Hsieh
    • The International Conference for High Performance Computing, Networking, Storage and Analysis (SC) (Accept. rate: 18.7%)
    • [ Paper ] [ Slides ]


  • History-Based Arbitration for Fairness in Processor-Interconnect of NUMA Servers
    • Wonjun Song, Gwangsun Kim, Hyungjoon Jung, Jongwook Chung, Jung Ho Ahn, Jae W Lee, and John Kim
    • The 22nd ACM International Conference on Architectural Support for Programming Languages and Operating Systems (ASPLOS) (Accept. rate: 17.4%)
    • [ Paper ]

2016

  • Contention-based Congestion Management in Large-Scale Networks
    • Gwangsun Kim, Changhyun Kim, Jiyun Jeong, Mike Parker, and John Kim
    • The 49th IEEE/ACM International Symposium on Microarchitecture (MICRO) (Accept. rate: 21.6%)
    • [ Paper ] [ Slides ]


  • Automatically Exploiting Implicit Pipeline Parallelism from Multiple Dependent Kernels for GPUs
    • Gwangsun Kim, Jiyun Jeong, John Kim, and Mark Stephenson
    • The 25th International Conference on Parallel Architectures and Compilation Techniques (PACT) (Accept. rate: 26.1%)
    • [ Paper ] [ Slides ]


  • Accelerating Linked-list Traversal through Near-Data Processing
    • Byungchul Hong, Gwangsun Kim, Jung Ho Ahn, Yongkee Kwon, Hongsik Kim, and John Kim
    • The 25th International Conference on Parallel Architectures and Compilation Techniques (PACT) (Accept. rate: 26.1%)
    • Nominated for the Best Paper Award
    • [ Paper ] [ Slides ]


  • High-Throughput System Design with Memory Networks
    • Gwangsun Kim
    • Ph.D. Thesis, School of Computing, KAIST
    • [ Paper ]


  • Transparent Offloading and Mapping (TOM): Enabling Programmer-Transparent Near-Data Processing in GPU Systems
    • Kevin Hsieh, Eiman Ebrahimi, Gwangsun Kim, Niladrish Chatterjee, Mike O’Connor, Nandita Vijaykumar, Onur Mutlu, and Stephen W. Keckler
    • The 43rd International Symposium on Computer Architecture (ISCA) (Accept. rate: 19.6%)
    • [ Paper ] [ Slides ]


  • iPAWS : Instruction-Issue Pattern-based Adaptive Warp Scheduling for GPGPUs
    • Minseok Lee, Gwangsun Kim, John Kim, Woong Seo, Yeongon Cho, and Soojung Ryu
    • The 22nd IEEE International Symposium on High Performance Computer Architecture (HPCA) (Accept. rate: 22.1%)
    • [ Paper ]


  • Design and Analysis of Hybrid Flow Control for Hierarchical Ring Network-on-Chip
    • Hanjoon Kim, Gwangsun Kim, Hwasoo Yeo, John Kim, and Seungryoul Maeng
    • IEEE Transactions on Computers, vol. 65, no. 2, pp. 480-494, 1 Feb. 2016
    • [ Paper ]

2015

  • Overcoming Far-end Congestion in Large-Scale Networks
    • Jongmin Won, Gwangsun Kim, John Kim, Ted Jiang, Mike Parker, and Steve Scott
    • The 21st IEEE International Symposium on High Performance Computer Architecture (HPCA) (Accept. rate: 22.1%)
    • [ Paper ]

2014


  • Multi-GPU System Design with Memory Networks
    • Gwangsun Kim, Minseok Lee, Jiyun Jeong, and John Kim
    • The 47th Annual IEEE/ACM International Symposium on Microarchitecture (MICRO) (Accept. rate: 19.4%)
    • [ Paper ] [ Slides ]


  • Memory Network: Enabling Technology for Scalable Near-Data Computing
    • Gwangsun Kim, John Kim, Jung Ho Ahn, and Yongkee Kwon
    • The 2nd Workshop on Near-Data Processing (WoNDP) (in conjunction with MICRO-47)
    • [ Paper ] [ Slides ]


  • Transportation-Network Inspired Network-on-Chip
    • Hanjoon Kim, Gwangsun Kim, Hwasoo Yeo, Seungryoul Maeng, and John Kim
    • The 20th International Symposium on High Performance Computer Architecture (HPCA) (Accept. rate: 25.6%)
    • [ Paper ]


  • Low-overhead Network-on-Chip Support for Location-oblivious Task Placement
    • Gwangsun Kim, Michael M. Lee, John Kim, Jae W. Lee, Dennis Abts, and Michael Marty
    • IEEE Transactions on Computers, vol. 63, no. 6, pp. 1487-1500, June 2014
    • [ Paper ]

2013

  • Memory-centric System Interconnect Design with Hybrid Memory Cubes
    • Gwangsun Kim, John Kim, Jung Ho Ahn, and Jaeha Kim
    • The 22nd International Conference on Parallel Architectures and Compilation Techniques (PACT) (Accept. rate: 17.3%)
    • Best Paper Award
    • [ Paper ] [ Slides ]

2012


  • Scalable On-chip Network in Power Constrained Manycore Processors
    • Hanjoon Kim, Gwangsun Kim, and John Kim
    • The 3rd International Green Computing Conference (IGCC)
    • [ Paper ]

2011


  • FlexiBuffer: Reducing Leakage Power in On-Chip Network Routers
    • Gwangsun Kim, John Kim, and Sungjoo Yoo
    • The 48th ACM/EDAC/IEEE Design Automation Conference (DAC) (Accept. rate: 22%)
    • [ Paper ] [ Slides ]

Contact

  • Email: g.kim at postech dot ac dot kr
  • Phone: +82-54-279-2260
  • Office: POSTECH PIRL(정보통신연구소) #433, 77 Cheongam-ro, Nam-gu, Pohang, Gyungbuk, Korea 37673
  • LinkedIn: Link