Dynamic Voltage Scaling for Portable Systems

Dynamic Voltage Scaling for Portable Systems
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便携式系统的动态电压调节

DOI：
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发表时间：
2007
期刊：
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通讯作者：
G. Micheli
G. Micheli
中科院分区：
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文献类型：
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作者：
Tajana Simunic;L. Benini;A. Acquaviva;Peter Glynny;G. Micheli

文献摘要

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便携式系统需要长电池寿命，同时仍能提供高性能。动态电压缩放（DVS）算法通过在运行时根据应用程序运行的需要改变处理器速度和电压来降低能耗。动态电源管理策略通过有选择地将组件置于低功耗状态来权衡性能和功耗。在这项工作中，我们扩展了在[2，3]中提出的DVS算法，从而实现更大的节能模型。我们在SmartBadge便携式设备上运行的MPEG视频和MP3音频算法上测试我们的方法[1]。我们的研究结果表明，节省了三个因素的能源消耗相结合的DVS和EQUIPMENT的方法。
ABSTRACT Portable systems require long battery lifetime while still delivering high performance. Dynamic voltage scaling (DVS) algorithms reduce energy consumption by changing processor speed and voltage at run-time depending on the needs of the applications running. Dynamic power management (DPM) policies trade o the performance for the power consumption by selectively placing components into low-power states. In this work we extend the DPM model presented in [2, 3] with a DVS algorithm, thus enabling larger power savings. We test our approach on MPEG video and MP3 audio algorithms running on the SmartBadge portable device [1]. Our results show savings of a factor of three in energy consumption for combined DVS and DPM approaches.