Revisit the case for direct-mapped chaches: a case for two-way set-associative level-two caches

  • Authors:
  • Wen-Hann Wang;Jim Quinlan;Konrad Lai

  • Affiliations:
  • -;-;-

  • Venue:
  • ISCA '92 Proceedings of the 19th annual international symposium on Computer architecture
  • Year:
  • 1992
  • DASC cache

    HPCA '95 Proceedings of the 1st IEEE Symposium on High-Performance Computer Architecture

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Abstract

In this paper we argue that a two-way second-level cache is a better design choice than a direct-mapped organization. We show two-way caches are as simple to implement as direct-mapped caches. If the cache controller contains tags, the data array can be organized as a single bank of standard SRAM. Otherwise, both tags and data can be organized as a single SRAM bank. Our simulation results show these novel two-way organizations outperform the direct-mapped approach.