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HoLiSwap: Reducing Wire Energy in L1 Caches
[article]
2017
arXiv
pre-print
Preserved Fulltext
This paper describes HoLiSwap a method to reduce L1 cache wire energy, a significant fraction of total cache energy, by swapping hot lines to the cache way nearest to the processor. We observe that (i) a small fraction (<3 cache lines (hot lines) serve over 60 difference in wire energy between the nearest and farthest cache subarray can be over 6×. Our method exploits this difference in wire energy to dynamically identify hot lines and swap them to the nearest physical way in a set-associative
arXiv:1701.03878v1
fatcat:khc5gxkfizb65hgjt4yeaohwve