Smart ECC Allocation Cache Utilizing Cache Data Space

Jeongkyu Hong, Soontae Kim

Research output: Contribution to journalArticlepeer-review

18 Scopus citations


Conventional error correcting codes (ECC) for caches are applied to all cache lines and stored in dedicated SRAM storage, which incurs both space and energy overheads. In contrast, we propose a Smart ECC Allocation (SEA) cache that utilizes cache data space for low-cost error protection of last-level caches. SEA cache avoids the requirement for dedicated storage for ECC check bits, which are stored in cache lines as data. To effectively utilize cache space, we group several cache sets and manage them according to program behavior. SEA cache eliminates the considerable space overheads of conventional ECC schemes without noticeable reliability and performance degradation.

Original languageEnglish
Article number7524731
Pages (from-to)368-374
Number of pages7
JournalIEEE Transactions on Computers
Issue number2
StatePublished - 1 Feb 2017


  • Reliability
  • cache memory
  • error-protection
  • transient error


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