ProbDesign1

ProbDesign1 - operating voltage Probabilistic CMOS switch...

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Emerging Technologies of  Computation Montek Singh COMP790-084 Oct 4, 2011

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Basics of probabilistic design energy-correctness tradeoff probabilistic Boolean logic approximate arithmetic applications Next class: architectures and design tools case studies challenges and benefits open questions Today:  Probabilistic Design
Operate at reduced voltage more noise but lesser energy consumption Where is this acceptable? Where could this be even desirable? Basics of probabilistic design

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Logic values have associated probabilities p:   probability that the value is correct introduces non-determinism Probabilistic Boolean logic
Thermal noise makes any switch noisy probability of error depends on thermal noise vs.

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Unformatted text preview: operating voltage Probabilistic CMOS switch Thermal noise makes any switch noisy ◦ probability of error depends on thermal noise vs. operating voltage higher supply voltage (Vdd) w.r.t. noise (sigma) implies higher probability of correct logic Probabilistic CMOS switch Everything else remaining fixed: ◦ energy required goes up exponentially with prob. of correctness ◦ energy required goes up quadratically with noise Energy-Correctness Tradeoffs energy required goes up exponentially with prob. of correctness Energy-Correctness Tradeoffs Probabilistic Cellular Automata Random Neural Networks Hyper Encryption Bayesian Inference Applications?...
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This note was uploaded on 11/28/2011 for the course COMP 790 taught by Professor Staff during the Fall '08 term at UNC.

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ProbDesign1 - operating voltage Probabilistic CMOS switch...

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