Cache Calculus: Modeling Caches through Differential Equations Beckmann, Nathan; Sanchez, Daniel Caches are critical to performance, yet their behavior is hard to understand and model. In particular, prior work does not provide closed-form solutions of cache performance, i.e. simple expressions for the miss rate of a specific access pattern. Existing cache models instead use numerical methods that, unlike closed-form solutions, are computationally expensive and yield limited insight. We present cache calculus, a technique that models cache behavior as a system of ordinary differential equations, letting standard calculus techniques find simple and accurate solutions of cache performance for common access patterns.
from Computer Science and Artificial Intelligence Lab (CSAIL) http://ift.tt/1MsADvl
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lundi 21 décembre 2015
Cache Calculus: Modeling Caches through Differential Equations
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