Evaluation of the Performance-Energy Overhead in DSP Video Decoding and its ImplicationsReport as inadecuate




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1 Lab-STICC UBO CACS MOCS Lab-STICC - Laboratoire des sciences et techniques de l-information, de la communication et de la connaissance, UBO - Université de Brest 2 Lab-STICC UBS CACS MOCS Lab-STICC - Laboratoire des sciences et techniques de l-information, de la communication et de la connaissance 3 MSS - Laboratoire de Mécanique des Solides et Système Algerie

Abstract : Video decoding is considered as one of the most compute and energy intensive application in energy constrained mobile devices. Some specific processing units, such as DSPs, are added to those devices in order to optimize the performance and the energy consumption. However, in DSP video decoding, the inter-processor communication overhead may have a considerable impact on the performance and the energy consumption. In this paper, we propose to evaluate this overhead and analyse its impact on the performance and the energy consumption as compared to the GPP decoding. Our work revealed that the GPP can be the best choice in many cases due to the a significant overhead in DSP decoding which may represents 30% of the total decoding energy.

keyword : Video decoding Performance Energy GPP DSP H264-AVC OMAP GStreamer





Author: Yahia Benmoussa - Jalil Boukhobza - Eric Senn - Djamel Benazzouz -

Source: https://hal.archives-ouvertes.fr/



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