Improving disk reuse for reducing power consumption

Mahmut Kandemir, Seung Woo Son, Mustafa Karakoy

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

Power consumption of disk systems is an important issue in scientific computing where data-intensive applications exercise disk storage extensively. While one can spin down idle disks when idleness is detected, spinning up them takes many cycles and consumes extra power. Therefore, it can be very useful in practice to improve disk reuse, that is, using the same set of disks as much as possible. If this can be achieved, unused disks can be held in the so called spin-down mode for longer durations of time, and this helps increase power savings. This paper proposes an approach for reducing disk power consumption by increasing disk reuse. The proposed approach restructures a given application code considering the disk layouts of the datasets it manipulates. We implemented this disk layout-conscious approach within a publicly-available compilation framework and compared it against a conventional data reuse optimization approach (which is also implemented using the same compiler) using six scientific applications that perform disk I/O. The results collected so far indicate that our layout-conscious approach and the conventional data reuse optimization approach reduce the disk energy consumption by 25.3% and 10.3%, respectively, on average, over the case where no disk power optimization is applied. The corresponding savings in total energy consumption (including CPU, memory and network energies) are 6.5% for the conventional approach and 16.5% for our disk layout-conscious approach. Our experimental evaluation also shows that the savings obtained are consistent with varying number of disks and alternate disk layouts.

Original languageEnglish (US)
Title of host publicationISLPED'07
Subtitle of host publicationProceedings of the 2007 International Symposium on Low Power Electronics and Design
Pages129-134
Number of pages6
DOIs
StatePublished - Dec 17 2007
EventISLPED'07: 2007 International Symposium on Low Power Electronics and Design - Portland, OR, United States
Duration: Aug 27 2007Aug 29 2007

Publication series

NameProceedings of the International Symposium on Low Power Electronics and Design
ISSN (Print)1533-4678

Other

OtherISLPED'07: 2007 International Symposium on Low Power Electronics and Design
CountryUnited States
CityPortland, OR
Period8/27/078/29/07

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Kandemir, M., Son, S. W., & Karakoy, M. (2007). Improving disk reuse for reducing power consumption. In ISLPED'07: Proceedings of the 2007 International Symposium on Low Power Electronics and Design (pp. 129-134). (Proceedings of the International Symposium on Low Power Electronics and Design). https://doi.org/10.1145/1283780.1283809