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University of Southern Denmark IMADA - Department of Mathematics and Computer Science
   

COMPUTER SCIENCE COLLOQUIUM

Zero Copy - Efficiency and Performance Engineering
for System Software in Distributed Systems
(including a brief look into its application at Google)

Thomas Stricker
Independent Consultant
Zurich, Switzerland

Monday, January 15, 2007, at 10:30
Auditorium U37

ABSTRACT

Internet based information retrieval services (search, mapping) on a global scale based can be provided by a large number of commodity PCs. Such systems require efficient communication-system software that makes optimal use of the hardware resources.

As an example for such a software technology I am presenting a zero copy TCP/IP protocol stack for cluster computing for OneGig Ethernet (in 2000) and TenGig Ethernet (2006). So far a true zero copy protocol stack seemed impossible with the simple hardware found in commodity PCs. For our solution we enlisted protocol speculation, a novel probabilistic technique, that is rarely used in software design yet but well proven in processor architecture.

In a second part of the talk I will briefly discuss how this system software technique could be used to improve the efficiency of a distributed procession of a search query within the Google Systems Infrastructure.

Host: Kim Skak Larsen


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Joan Boyar (joan@imada.sdu.dk)

 


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