http://dx.doi.org/10.1109/SC.2012.99">
 

Document Type

Conference Paper

Department/Unit

Department of Computer Science

Title

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

Language

English

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. © 2012 IEEE.

Publication Date

2012

Source Publication Title

2012 International Conference for High Performance Computing, Networking, Storage and Analysis (SC).

Start Page

1

End Page

11

Conference Location

Salt Lake City, Utah

Publisher

IEEE

ISBN (print)

9781467308052

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