Reinforcing the energy efficiency of cyber-physical systems via direct and split cache consolidation on MLC STT-RAM

Shuo Han Chen, Yu Pei Liang, Yuan Hao Chang, Yun Fei Liu, Chun Feng Wu, Hsin Wen Wei, Wei Kuan Shih

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations

Abstract

Energy efficiency has become one of the primary considerations in the designs of cyber-physical systems (CPS). However, CPS with static RAM (SRAM)-based processors suffers from the high leakage power issue of SRAM, thus limiting the energy efficiency of CPS. Recently, Spin-Transfer Torque RAM (STT-RAM) has emerged and been widely regarded as a great alternative as the on-chip memory within processors, owing to STT-RAM's high density and near-zero leakage power characteristics. In addition, recent advances in Magnetic Tunneling Junction (MTJ) technology also realize the multi-level cell (MLC) STT-RAM to further enhance the memory density. Nevertheless, the write disturbance issue greatly limits the energy efficiency of MLC STT-RAM. Even though studies have been proposed to alleviate this issue, most of the previous disturbance reduction strategies could induce additional management overhead by utilizing counters or cause frequent swap operations when the write disturbance happens. Such observations motivate us to propose a simple and effective solution to unify the direct and split mapping cache designs for improving the energy efficiency of MLC STT-RAM. The proposed design is evaluated through a series of experiments on an emulator with encouraging results.

Original languageEnglish
Title of host publication35th Annual ACM Symposium on Applied Computing, SAC 2020
PublisherAssociation for Computing Machinery
Pages202-209
Number of pages8
ISBN (Electronic)9781450368667
DOIs
StatePublished - 30 Mar 2020
Event35th Annual ACM Symposium on Applied Computing, SAC 2020 - Brno, Czech Republic
Duration: 30 Mar 20203 Apr 2020

Publication series

NameProceedings of the ACM Symposium on Applied Computing

Conference

Conference35th Annual ACM Symposium on Applied Computing, SAC 2020
Country/TerritoryCzech Republic
CityBrno
Period30/03/203/04/20

Keywords

  • Cell split mapping
  • Cyber-physical systems
  • Direct mapping
  • MLC STT-RAM
  • STT-RAM

Fingerprint

Dive into the research topics of 'Reinforcing the energy efficiency of cyber-physical systems via direct and split cache consolidation on MLC STT-RAM'. Together they form a unique fingerprint.

Cite this