“Fused Floating-Point Arithmetic for DSP Applications”

Dr. Earl Swartzlander
Professor of Electrical and Computer Engineering, University of Texas at Austin

This event sponsored by the IEEE San Fernando Valley CS Chapter.  Meeting details below.

This talk describes the application of two fused floating-point operations to the implementation of important DSP applications. Floating-point arithmetic is a great advantage for DSP as it removes the need to address overflow, scaling and underflow problems that arise with fixed-point arithmetic. Specific attention is focused on fast Fourier transform butterfly units. The operations are a fused two-term dot product and a fused add-subtract unit. The FFT “butterfly” operations consist of complex multiplications, additions and subtractions. Both radix-2 and radix-4 butterflies can be implemented efficiently with the two fused floating-point operations. When placed and routed using high performance 45nm standard cells, the fused FFT radix-4 butterfly is about 13% faster and 26% smaller than a conventional implementation. Also the numerical results of the fused implementation are slightly more accurate since the fused implementation uses fewer rounding operations.

Speaker Biography

Earl E. Swartzlander, Jr. is a Professor of Electrical and Computer Engineering at the University of Texas at Austin. Previously he was with TRW Defense and Space Systems from 1975 to 1990 where he held positions ranging from Staff Engineer to Laboratory Manager and most recently was the Director of Independent Research and Development for the TRW Defense Systems Group. His research interests are in application specific processor design and the interaction between VLSI technology and computer architecture. These areas involve computer arithmetic, VLSI development and digital signal processor implementation.

He is the author or co-author of over 60 journal papers, over 250 conference papers, over 30 book chapters and one book. He has edited seven books. He is currently the hardware area editor for ACM Computing Reviews.

He is a Fellow of the IEEE and is a registered professional engineer in California, Colorado and Texas. He obtained his doctorate in electrical engineering from the University of Southern California with the support of a Howard Hughes Doctoral Fellowship. He received a Golden Core award from the IEEE Computer Society and a Third Millennium Medal from the IEEE.

Date: Wednesday, March 17, 2010

Time: 6:00 PM – Pizza + Social Networking, 6:45 PM – Lightning Talk, 7:00 PM – Presentation

Jacaranda Hall Conference Room 1568
College of Engineering & Computer Science
California State University, Northridge
18111 Nordhoff Street, Northridge, CA 91330

No Fee: Free pizza and refreshments starting from 6:30 PM

RSVP: to emerida@ieee.org by March 10, 2010

Flyer: online

Information: ikageorgis@ieee.org

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