Statistically based estimate of embedded software execution time
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United States of America Patent
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Feb 28, 2006
Grant Date -
Nov 7, 2002
app pub date -
Mar 5, 2001
filing date -
Mar 5, 2001
priority date (Note) -
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Abstract
A statistical approach to estimating software execution times is implemented by preparing a model of a target processing device, correlating the software to be estimated to benchmark programs used in the preparation of the model, and then applying the software to be estimated to the model. The model is developed by determining the actual execution times of the benchmark programs, determining a number of virtual instructions in the benchmark programs and determining a predictor equation that correlates the virtual instructions to the actual execution time. The predictor equation is determined by a linear regression technique that includes a correlation analysis of the virtual instructions, removal of highly correlated instructions, and a combination of stepwise linear regression and multiple linear regression to determine the predictor equation.
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