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Decoupled Sectored Caches
February 1997 (vol. 46 no. 2)
pp. 210-215

Abstract—Maintaining a low tag array size is a major issue in many cache designs. In the decoupled sectored cache, we present in this paper, the monolithic association between a cache block and a tag location is broken; the address tag location associated with a cache line location is dynamically chosen at fetch time among several possible locations.

The hit ratio for a decoupled sectored cache is very close to the hit ratio for a nonsectored cache. Then a decoupled sectored cache will allow the same level of performance as a nonsectored cache, but at a significantly lower hardware cost.

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Index Terms:
Sectored caches, tag volume, decoupled sectored caches, second-level caches.
André Seznec, "Decoupled Sectored Caches," IEEE Transactions on Computers, vol. 46, no. 2, pp. 210-215, Feb. 1997, doi:10.1109/12.565601
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