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Cache coherence enabled adaptive refresh for volatile STT-RAM

  • Jianhua Li
  • , Liang Shi
  • , Qing'an Li
  • , Chun Jason Xue
  • , Yiran Chen
  • , Yinlong Xu
  • City University of Hong Kong
  • University of Science and Technology of China
  • Wuhan University
  • University of Pittsburgh

科研成果: 书/报告/会议事项章节会议稿件同行评审

摘要

Spin-Transfer Torque RAM (STT-RAM) is extensively studied in recent years. Recent work proposed to improve the write performance of STT-RAM through relaxing the retention time of STT-RAM cell, magnetic tunnel junction (MTJ). Unfortunately, frequent refresh operations of volatile STT-RAM could dissipate significantly extra energy. In addition, refresh operations can severely conflict with normal read/write operations and results in degraded cache performance. This paper proposes Cache Coherence Enabled Adaptive Refresh (CCear) to minimize refresh operations for volatile STT-RAM. Through novel modifications to cache coherence protocol, CCear can effectively minimize the number of refresh operations on volatile STT-RAM. Full-system simulation results show that CCear approaches the performance of the ideal refresh policy with negligible overhead.

源语言英语
主期刊名Proceedings - Design, Automation and Test in Europe, DATE 2013
出版商Institute of Electrical and Electronics Engineers Inc.
1247-1250
页数4
ISBN(印刷版)9783981537000
DOI
出版状态已出版 - 2013
已对外发布
活动16th Design, Automation and Test in Europe Conference and Exhibition, DATE 2013 - Grenoble, 法国
期限: 18 3月 201322 3月 2013

出版系列

姓名Proceedings -Design, Automation and Test in Europe, DATE
ISSN(印刷版)1530-1591

会议

会议16th Design, Automation and Test in Europe Conference and Exhibition, DATE 2013
国家/地区法国
Grenoble
时期18/03/1322/03/13

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