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International Parallel and Distributed Processing Symposium (IPDPS'03)
Evolutionary Fault Recovery in a Virtex FPGA Using a Representation that Incorporates Routing
Nice, France
April 22-April 26
ISBN: 0-7695-1926-1
Jason Lohn, NASA Ames Research Center
Greg Larchev, NASA Ames Research Center
Ronald DeMara, University of Central Florida
Most evolutionary approaches to fault recovery in FPGAs focus on evolving alternative logic configurations as opposed to evolving the intra-cell routing. Since the majority of transistors in a typical FPGA are dedicated to interconnect, nearly 80% according to one estimate, evolutionary fault-recovery systems should benefit by accommodating routing. In this paper, we propose an evolutionary fault-recovery system employing a genetic representation that takes into account both logic and routing configurations. Experiments were run using a software model of the Xilinx Virtex FPGA. We report that using four Virtex combinational logic blocks, we were able to evolve a 100% accurate quadrature decoder finite state machine in the presence of a stuck-at-zero fault. Evolutionary experiments with the hardware in the loop have begun and we discuss the preliminary results.
Citation:
Jason Lohn, Greg Larchev, Ronald DeMara, "Evolutionary Fault Recovery in a Virtex FPGA Using a Representation that Incorporates Routing," ipdps, pp.172a, International Parallel and Distributed Processing Symposium (IPDPS'03), 2003
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