Scheduling to optimize cache utilization for non-volatile main memories

Jingtong Hu, Qingfeng Zhuge, Chun Jason Xue, Wei Che Tseng, Shouzhen Gu, Edwin H.M. Sha

Research output: Contribution to journalArticlepeer-review

11 Scopus citations

Abstract

In power and size sensitive embedded systems, non-volatile memories (NVMs) are replacing DRAM as the main memory since they have higher density, lower static power consumption, and lower costs. Unfortunately, these technologies are limited by their endurance and long write latencies. To minimize the main memory access time and extend the lifetime of the NVM, we optimally schedule tasks by an ILP formulation. We also present a heuristic, Concatenation Scheduling, to solve large problems in a reasonable amount of time. Our experimental results show that when compared with list scheduling, concatenation scheduling can reduce the total memory access time by an average of 9.99% and increase the lifetime of the NVM by 26.66%. When compared with list scheduling, ILP can reduce the total memory access time by an average of 12.39% and increase the lifetime of the NVM by 38.74%.

Original languageEnglish
Article number6409835
Pages (from-to)2039-2051
Number of pages13
JournalIEEE Transactions on Computers
Volume63
Issue number8
DOIs
StatePublished - Aug 2014
Externally publishedYes

Keywords

  • Cache memories
  • memory management
  • primary memory
  • real-time and embedded systems

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