I am a Software Engineer at Google, Networking Infrastructure.
I am generally interested in data center networking, and improving the performance and reliability of large-scale systems.
I received Ph.D. in Computer Science at KAIST in 2012 under Sue Moon and KyoungSoo Park.
Below is my employment history.
- Rubrik , Software Engineer, Dec. 2020 - May. 2023
- Max Planck Institute for Software Systems , Tenure Track Faculty, Mar. 2019 - Dec. 2020
- Google Networking Infrastructure, Software Engineer, Jan. 2016 - Feb. 2019
- Intel Labs, Research Scientist, Nov. 2014 - Jan. 2016
- Microsoft Research Cambridge, UK., Post Doctoral Researcher, Mar. 2012 - Mar. 2014
Peer-reviewed Conference
- Swift: Delay is Simple and Effective for Congestion Control in the Datacenter,
-
Guatam Kumar,
Nandita Dukkipati,
Keon Jang,
Hassan MG Wassel,
Xian Wu,
Behnam Montazeri,
Yaogong Wang,
Kevin Springborn,
Christopher Alfeld,
Michael Ryan,
David Wetherall,
Amin Vahdat,
- SIGCOMM, Aug. 2020 [PDF]
- Credit-Scheduled Delay-Bounded Congestion Control for Datacenters
- NetBricks: Taking the V out of NFV
- E2: A Framework for NFV Applications
- Silo: Predictable Message Latencyin the Cloud
- Accurate Latency-based Congestion Feedback for Datacenters
- NBA (Net-work Balancing Act): A High-performance Packet Processing Framework for Heterogeneous Processors Best Student Paper
- Chatty Tenants and the Cloud Network Sharing Problem
- SSLShader: Cheap SSL Acceleration with Commodity Processors
- PacketShader: A GPU-Accelerated Software Router
- Path Stitching: Internet-wide Path and Delay Estimation from Existing Measurements
- Evaluation of VoIP Quality over WiBro
Journals
- DX: Latency-Based Congestion Control for Datacenters
- Scalable and systematic Internet-wide path and delay estimation from existing measurements
Workshops
- The Power of Batching in the Click Modular Router
- Building a 100 Gbps Software Router with Commodity Hardware
- Implementation and Evaluation of a Mobile PlanetLab Node
- Best-case WiBro Performance for a Single Flow
- 3G and 3.5G Wireless Network Performance Measured from Moving Cars and High-Speed Trains
- Improving Delay Estimation with Path-Stitching
- Design Considerations for a Mobile Testbed
Poster & Demo
- Towards an Open Middlebox Platform for Modular Function Composition
- Reviving Delay-based TCP for DataCenters
- Modularity Meets Batching: Towars an Experimental Platform for High-speed Software Routers
- Accelerating SSL with GPUs Best Poster
- PacketShader: Massively Parallel Packet Processing with GPUs to Accelerate Software Routers
- Internet Sibilla: Utilizing DNS for Delay Estimation Service
Technical Reports
- ExpressPass: End-to-End Credit-based Congestion Control for Datacenters
- SoftNIC: A software NIC to augment hardware
-
Sangjin Han,
Keon Jang,
Aurojit Panda,
Shoumik Palkar,
Dongsu Han,
Sylvia Ratnasamy
- Dept. EECS, Univ. California, Berkeley, Technical Report, UCB/EECS-2015-155, May. 2015 [PDF]
- Silo: Predictable Message Completion Time in the Cloud
- Path stitching: Scalable and systematic internet-wide path and delay estimation from existing measurements
Talks
- "SoftNIC: A Software NIC to Augment Hardware"
- Invited talk @ FUTURE INTERNET FORUM, Oct. 2014
- Invited talk @ Seoul National University, Oct. 2014
- "Silo: Predictable Message Latency in the Cloud," SIGCOMM, Aug 2015
- Invited talk @ Sungkyunkwan University, May. 2014
- Invited talk @ UNIST, Oct. 2015
- "Chatty Tenants and the Cloud Network Sharing Problem," NSDI, Apr 2013
- "SSLShader: Cheap SSL Acceleration with Commodity Processors," NSDI, Apr 2011
Services
- Program Committee
- NSDI 2021
- SIGCOMM 2019
- APNet 2017, 2019, 2020
- HotMiddlebox 2016
- Reviewer
- IEEE Transactions on Networking
- ACM SIGCOMM Computer Communication Review
- External Reviewer
- INFOCOM 2017
- SIGCOMM 2015