Use effective cycles/instruction as a true CPU benchmark

Olivarez, Mike; Beasley, Brian
May 2005
Portable Design;May2005, Vol. 11 Issue 5, p18
This article discusses the use of effective cycles/instruction (CPI) to measure dissimilar architectures. To show how the relative CPI works, three different processor architectures are used to demonstrate how the comparisons can be done. Once the eCPI of the architectures have been computed, the next step would be to compare them, with the lowest number being the best. The effective CPI measured the efficiency of the architecture for the given task, but in creating a portable design, the clock speed needs consideration relative to the eCPI.


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