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Fishbowl Seminar: Jellyfish: Networking Data Centers Randomly

November 14, 2013 @ 3:30 pm - 5:00 pm

Brighten Godfrey
Assistant Professor
Department of Computer Science
University of Illinois at Urbana-Champaign.



The combination of two inexorable trends—increasing parallelism and increasing big data analytics—means modern data centers urgently need efficient high-capacity networks interconnecting thousands of servers. Current designs are expensive and complex because they require rigid network structure, interfering with incremental expansion and use of heterogeneous components. In this talk we will fundamentally rethink high-capacity data center interconnects.

Our Jellyfish architecture uses a random network to achieve dramatically more flexibility than past approaches, easing incremental expansion and incorporation of heterogeneous equipment. Surprisingly, Jellyfish achieves substantially higher throughput using the same equipment as state-of-the-art carefully structured tree-like designs. I will describe how we can solve practical challenges including routing, congestion control, and physical cabling in an unstructured network, as well as fundamental insights on the nature of network structure.


P. Brighten Godfrey is an assistant professor in the Department of Computer Science at the University of Illinois at Urbana-Champaign. He completed his Ph.D. at UC Berkeley in May 2009, and his B.S. at Carnegie Mellon University in 2002. His research interests lie in the design and analysis of networked systems. He is a winner of the 2012 National Science Foundation CAREER Award, the 2012 IEEE Communications Society & Information Theory Society Joint Paper Award, the 2010 IEEE Communications Society Data Storage Technical Committee Best Paper Award, a best paper award at HotSDN 2012, and a 2013 Internet2 Innovative Application Award.


November 14, 2013
3:30 pm - 5:00 pm