The filter cache: an energy efficient memory structure
MICRO 30 Proceedings of the 30th annual ACM/IEEE international symposium on Microarchitecture
Gated-Vdd: a circuit technique to reduce leakage in deep-submicron cache memories
ISLPED '00 Proceedings of the 2000 international symposium on Low power electronics and design
Proceedings of the 35th annual ACM/IEEE international symposium on Microarchitecture
MiBench: A free, commercially representative embedded benchmark suite
WWC '01 Proceedings of the Workload Characterization, 2001. WWC-4. 2001 IEEE International Workshop
Reducing leakage in power-saving capable caches for embedded systems by using a filter cache
MEDEA '07 Proceedings of the 2007 workshop on MEmory performance: DEaling with Applications, systems and architecture
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Leakage power in cache memories represents a sizable fraction of total power consumption, and many techniques have been proposed to reduce it. As a matter of fact, during a fixed period of time, only a small subset of cache lines is used. Previous techniques put unused lines, for example, to drowsy in order to save power. Our idea is to adaptively select the most used cache lines. In the case of instruction cache, we found that this can automatically achieved by coupling a tiny cache acting as a filter cache (ILO cache) with a drowsy-cache. Our experiments, with complete MiBench suite for ARM based processor, show a 25% improvement in leakage saving versus drowsy.