TRANSFERRING PERFORMANCE GAIN FROM SOFTWARE PREFETCHING TO ENERGY REDUCTION

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dc.contributor.authorAgarwal, Deepak N.
dc.contributor.authorPamnani, Sumitkumar N.
dc.contributor.authorQu, Gang
dc.contributor.authorYeung, Donald
dc.date.accessioned2009-05-06T14:56:51Z
dc.date.available2009-05-06T14:56:51Z
dc.date.issued2004-05
dc.description.abstractPerformance-enhancement techniques improve CPU speed, but at higher cost to other valuable system resources such as power and energy. We study this trade-off using software prefetching as the system performance-enhancement technique. We first demonstrate software prefetching provides an average 36% performance boost with 8% more energy consumption and 69% higher power on six memory-intensive benchmarks. However, when we combine prefetching with a (unrealistic) static voltage scaling technique, the performance gain afforded by prefetching can be traded off for savings in power/energy consumption. In particular, we observe a 48% energy saving when we slow down the system with prefetching so as to match the performance of the system without prefetching. This suggests a promising approach to build low power systems by transforming traditional performance-enhancement techniques into low power methods. We thus propose a real time dynamic voltage scaling (DVS) algorithm that monitors a system’s performance and adapts the voltage level accordingly while maintaining the observed system performance. Our dynamic DVS algorithm achieves a 38% energy saving without any performance loss on our benchmark suite.en
dc.format.extent285341 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.citationD. Agarwal, S. Pamnani, G. Qu, and D. Yeung. "Transferring Performance Gain from Software Prefetching to Energy Reduction," IEEE International Symposium on Circuits and Systems, Vol. 2, pp. 241-244, May 2004.en
dc.identifier.urihttp://hdl.handle.net/1903/9061
dc.language.isoen_USen
dc.publisherIEEEen
dc.relation.isAvailableAtA. James Clark School of Engineeringen_us
dc.relation.isAvailableAtElectrical & Computer Engineeringen_us
dc.relation.isAvailableAtDigital Repository at the University of Marylanden_us
dc.relation.isAvailableAtUniversity of Maryland (College Park, MD)en_us
dc.rights.licenseCopyright © 2004 IEEE. Reprinted from IEEE International Symposium on Circuits and Systems. This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Maryland's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to pubs-permissions@ieee.org. By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
dc.subjectCPUen
dc.subjectenergy useen
dc.subjectprefetchingen
dc.titleTRANSFERRING PERFORMANCE GAIN FROM SOFTWARE PREFETCHING TO ENERGY REDUCTIONen
dc.typeArticleen

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