RAMZzz: Rank-aware DRAM power management with dynamic migrations and demotions

Donghong Wu, Bingsheng He, Xueyan Tang, Jianliang XU, Minyi Guo

Research output: Chapter in book/report/conference proceedingConference contributionpeer-review

20 Citations (Scopus)

Abstract

Main memory is a significant energy consumer which may contribute to over 40% of the total system power, and will become more significant for server machines with more main memory. In this paper, we propose a novel memory system design named RAMZzz with rank-aware energy saving optimizations. Specifically, we rely on a memory controller to monitor the memory access locality, and group the pages with similar access locality into the same rank. We further develop dynamic page migrations to adapt to data access patterns, and a prediction model to estimate the demotion time for accurate control on power state transitions. We experimentally compare our algorithm with other energy saving policies with cycle-accurate simulation. Experiments with benchmark workloads show that RAMZzz achieves significant improvement on energy-delay and energy consumption over other power saving techniques.

Original languageEnglish
Title of host publication2012 International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2012
DOIs
Publication statusPublished - 2012
Event2012 24th International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2012 - Salt Lake City, UT, United States
Duration: 10 Nov 201216 Nov 2012

Publication series

NameInternational Conference for High Performance Computing, Networking, Storage and Analysis, SC
ISSN (Print)2167-4329
ISSN (Electronic)2167-4337

Conference

Conference2012 24th International Conference for High Performance Computing, Networking, Storage and Analysis, SC 2012
Country/TerritoryUnited States
CitySalt Lake City, UT
Period10/11/1216/11/12

Scopus Subject Areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Hardware and Architecture
  • Software

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