Daehyeok Kim

My research interests lie in the intersection of computer systems and networking with a current focus on making data centers faster and more efficient. Recently, I have been working on designing software abstractions for emerging hardware technologies such as programmable switches/network interface cards and Remote Direct Memory Access (RDMA) to unleash their full potentials, and leverage them to build high-perfomance networked systems. In the past, I worked on various topics in systems security and mobile wireless networks.

At CMU, I am fortunate to be co-advised by Professors Srinivasan Seshan and Vyas Sekar. Prior to CMU, I worked at KAIST for three years as a research scientist. Before then, I received a BS and MS degree in Computer Science and Engineering from POSTECH, South Korea.

I am a recipient of the 2019 Microsoft Research PhD Fellowship.

Publications

2020

• Adapting TCP for Reconfigurable Datacenter Networks (to appear)
  Matthew Mukerjee, Christopher Canel, Weiyang Wang, Daehyeok Kim, Srinivasan Seshan, Alex C. Snoeren
  In Proceedings of 17th USENIX Symposium on Networked Systems Design and Implementation (NSDI 2020).
  [paper]

2019

• FreeFlow: Software-based Virtual RDMA Networking for Containerized Clouds
  Daehyeok Kim, Tianlong Yu, Hongqiang Harry Liu, Yibo Zhu, Jitu Padhye, Shachar Raindel, Chuanxiong Guo, Vyas Sekar, Srinivasan Seshan
  In Proceedings of 16th USENIX Symposium on Networked Systems Design and Implementation (NSDI 2019).
  [paper] [slides] [talk video]

2018

• Generic External Memory for Switch Data Planes
  Daehyeok Kim, Yibo Zhu, Changhoon Kim, Jeongkeun Lee, Srinivasan Seshan
  In Proceedings of the 17th ACM Workshop on Hot Topics in Networks (HotNets 2018).
  [paper] [slides] [talk video]
• HyperLoop: Group-Based NIC-Offloading to Accelerate Replicated Transactions in Multi-Tenant Storage Systems
  Daehyeok Kim, Amirsaman Memaripour, Anirudh Badam, Yibo Zhu, Hongqiang Harry Liu, Jitu Padhye, Shachar Raindel, Steven Swanson, Vyas Sekar, Srinivasan Seshan
  In Proceedings of ACM SIGCOMM Conference (SIGCOMM 2018).
  [paper] [slides] [talk video]

2017 and earlier

• REboost: Improving Throughput in Wireless Networks using Redundancy Elimination
  Kilho Lee, Daehyeok Kim, Insik Shin
  In IEEE Communications Letters, vol.21, no.1, Jan. 2017.
  [paper]
• What Mobile Ads Know About Mobile Users
  Sooel Son, Daehyeok Kim, Vitaly Shmatikov
  In Proceedings of 23rd Network and Distributed System Security Symposium (NDSS 2016).
  [paper] [slides]
• FlexDroid: Enforcing In-App Privilege Separation in Android
  Jaebaek Seo, Daehyeok Kim, Donghyun Cho, Taesoo Kim, Insik Shin
  In Proceedings of 23rd Network and Distributed System Security Symposium (NDSS 2016).
  [paper] [slides]
• SounDroid: Supporting Real-Time Sound Application on Commodity Mobile Devices
  Hyosu Kim, SangJeong Lee, Wookhyun Han, Daehyeok Kim, Insik Shin
  In Proceedings of 36th IEEE Real-Time Systems Symposium (RTSS 2015).
  [paper]
• Optimized Layered Integrated Video Encoding
  Sangki Yun, Daehyeok Kim, Xiaofan Lu, Lili Qiu
  In Proceedings of 34th IEEE International Conference on Computer Communications (INFOCOM 2015).
  [paper]
• ATRA: Address Translation Redirection Attack against Hardware-based External Monitors
  Daehee Jang, Hojoon Lee, Minsu Kim, Daehyeok Kim, Daegyeong Kim, Brent B. Kang
  In Proceedings of 21st ACM Conference on Computer and Communications Security (CCS 2014).
  [paper]
• Fine-grained Spectrum Adaptation in WiFi Networks
  Sangki Yun, Daehyeok Kim, Lili Qiu
  In Proceedings of 20th ACM International Conference on Mobile Computing and Networking (MobiCom 2013).
  [paper] [slides]
• Multi-rate Combination of Opportunistic Routing and Network Coding
  Daehyeok Kim, Young-Joo Suh
  In Proceedings of 9th IEEE Wireless Communications and Networking Conference (WCNC 2012).
  [paper]
• Multicast Extension to Proxy Mobile IPv6 for Mobile Multicast Services
  Daehyeok Kim, Wan-Seon Lim, Young-Joo Suh
  In Journal of Computing Science and Engineering, vol.5, no.4, Dec. 2011.
  [paper]

Teaching

• TA for Computer Networks (15-441/641 at CMU) by Justine Sherry and Peter Steenkiste, Spring 2019.
• TA for Distributed Systems (15-440/640 at CMU) by Srini Seshan and Yuvraj Agarwal, Fall 2017.