Thesis Defense: Centralized Performance Control for Datacenter Networks

Speaker: Jonathan Perry , CSAIL, Ph.D. candidate

Date: Monday, May 08, 2017

Time: 1:00 PM to 2:00 PM Note: all times are in the Eastern Time Zone

Public: Yes

Location: Hewlett (32-G882)

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Host: Hari Balakrishnan and Devavrat Shah, M.I.T. CSAIL and EECS

Contact: Sheila M. Marian, 617-253-1996,

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Reminder Subject: TALK: Centralized Performance Control for Datacenter Networks

The datacenter network is a shared resource; each datacenter application decides independently when to send data, to whom, and how much, making it hard to manage the sharing of network resources among applications.

Is it possible to bring some order into the datacenter? In other words, can we design a network in which: (1) the network enforces
operator-specified resource allocation policies, (2) packets experience no queueing delays in the network, and (3) the network achieves high utilization?

Current datacenter networks inherit the principles that went into the design of the Internet, where packet transmission and path selection decisions are distributed among the endpoints and routers, however
this design impedes obtaining the desired properties. Instead, we propose that a centralized controller should tightly regulate senders' use of the network according to operator policy, and suggest two architectures: Fastpass and Flowtune.

In Fastpass, the controller decides when each packet should be transmitted and what path it should follow. In Flowtune, The
centralized allocator receives flow start and endnotifications from endpoints, and computes optimal rates according to operator-specified
utility functions.

The talk will present the two architectures, their associated algorithms and multi-core designs, and their evaluation in deployments
in a portion of Facebook's datacenter network and on Amazon EC2, as well as using micro-benchmarks and simulations.

Jonathan received a B.Sc. in Computer Science from Tel-Aviv University in 2003, and then served in army communications R&D and R&D team lead roles until 2010. He received a Facebook Ph.D. Fellowship, the Jacobs Presidential Fellowship, and the Wolf Foundation's Scholarship for Excellence.

Thesis Committee: Hari Balakrishnan, Devavrat Shah, Mohammad Alizadeh, Frans Kaashoek

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This event is not part of a series.

Created by Sheila M. Marian Email at Tuesday, May 02, 2017 at 9:02 AM.