Prefetching-aware cache line turnoff for saving leakage energy

Ismail Kadayif, Mahmut Kandemir, Feihui Li
2006 Proceedings of the 2006 conference on Asia South Pacific design automation - ASP-DAC '06  
While numerous prior studies focused on performance and energy optimizations for caches, their interactions have received much less attention. This paper studies this interaction and demonstrates how performance and energy optimizations can affect each other. More importantly, we propose three optimization schemes that turn off cache lines in a prefetchingsensitive manner. These schemes treat prefetched cache lines differently from the lines brought to the cache in a normal way (i.e., through a
more » ... load operation) in turning off the cache lines. Our experiments with applications from the SPEC2000 suite indicate that the proposed approaches save significant leakage energy with very small degradation on performance.
doi:10.1145/1118299.1118351 fatcat:mg2uchm6dffwzjwjmwgrb6c3kq