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Exploiting Program Execution Phases to Trade Power and Performance for Media Workload

Banerjee, Subhasis and Surendra, G and Nandy, SK (2004) Exploiting Program Execution Phases to Trade Power and Performance for Media Workload. In: the ASP-DAC 2004. Asia and South Pacific Design Automation Conference, 2004, 27-30 January, Yokohama,Japan, pp. 387-389.


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Processing streaming media comprises several program phases (often distinct) that are periodic and independent of application data. Here we characterize execution of such programs into execution phases based on their dynamic IPC (instruction per cycle) profile. We show that program execution of selected phases can be dynamically boosted by activating additional standby functional units which are otherwise powered down for saving energy. Through simulation we show that speedup ranging from 1.1 to 1.25 can be achieved while reducing the energy-delay product (EDP) for most of the media benchmarks evaluated. Additionally we show that artificially introduced stalls during phases of processor underutilization reduces power by around 2 to 4%.

Item Type: Conference Paper
Publisher: IEEE
Additional Information: �©1990 IEEE. 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 to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Department/Centre: Division of Interdisciplinary Sciences > Supercomputer Education & Research Centre
Date Deposited: 21 Dec 2005
Last Modified: 19 Sep 2010 04:22
URI: http://eprints.iisc.ac.in/id/eprint/4693

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