MPEG-2解码的动态热管理

ISLPED'06 Proceedings of the 2006 International Symposium on Low Power Electronics and Design Pub Date : 2006-10-04 DOI:10.1145/1165573.1165647

Wonbok Lee, Kimish Patel, Massoud Pedram

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引用次数: 28

摘要

在本文中，我们提出了一种有效的动态热管理(DTM)方案，该方案允许一定程度的时空质量退化。给定目标MPEG-2解码时间，我们动态选择帧内空间退化或帧间时间退化策略，以确保微处理器芯片继续保持在热安全运行状态，尽管有一定数量的图像/视频质量损失。在实验中，我们使用mediabbench的MPEG-2解码器程序，修改/组合watch和HotSpot分别进行了功耗和热模拟和测量。实验结果表明，在空间质量下降0.12均方根误差(RMSE)和平均帧丢帧率为12.5%的情况下，我们实现了热安全状态

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Dynamic Thermal Management for MPEG-2 Decoding

In this paper, we propose an effective dynamic thermal management (DTM) scheme for MPEG-2 decoding by allowing some degree of spatiotemporal quality degradation. Given a target MPEG-2 decoding time, we dynamically select either an intra-frame spatial degradation or an inter-frame temporal degradation strategy in order to make sure that the microprocessor chip continues to stay in a thermally safe state of operation, albeit with certain amount of image/video quality loss. For our experiments, we use the MPEG-2 decoder program of MediaBench and modify/combine Wattch and HotSpot for the power and thermal simulations and measurements, respectively. Our experimental results show that we achieve thermally safe state with spatial quality degradation of 0.12 root mean square error (RMSE) and with frame drop rate of 12.5% on average

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ISLPED'06 Proceedings of the 2006 International Symposium on Low Power Electronics and Design

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