NDLI: Interactive presentation: Soft-core processor customization using the design of experiments paradigm

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Interactive presentation: Soft-core processor customization using the design of experiments paradigm

Content Provider	ACM Digital Library
Author	Sheldon, David Lonardi, Stefano Vahid, Frank
Abstract	Parameterized components are becoming more commonplace in system design. The process of customizing parameter values for a particular application, called tuning, can be a challenging task for a designer. Here we focus on the problem of tuning a parameterized soft-core microprocessor to achieve the best performance on a particular application, subject to size constraints. We map the tuning problem to a well-established statistical paradigm called Design of Experiments (DoE), which involves the design of a carefully selected set of experiments and a sophisticated analysis that has the objective to extract the maximum amount of information about the effects of the input parameters on the experiment. We apply the DoE method to analyze the relation between input parameters and the performance of a soft-core microprocessor for a particular application, using only a small number of synthesis/execution runs. The information gained by the analysis in turn drives a soft-core tuning heuristic. We show that using DoE to sort the parameters in order of impact results in application speedups of 6x-17x versus an un-tuned base soft-core. When compared to a previous single-factor tuning method, the DoE-based method achieves 3x-6x application speedups, while requiring about the same tuning runtime. We also show that tuning runtime can be reduced by 40--45% by using predictive tuning methods already built into a DoE tool.
Starting Page	821
Ending Page	826
Page Count	6
File Format	PDF
ISBN	9783981080124
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2007-04-16
Publisher Place	San Jose
Access Restriction	Subscribed
Content Type	Text
Resource Type	Article

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