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Low-Power High-Efficiency Video Decoding using General-Purpose Processors

2015; Association for Computing Machinery; Volume: 11; Issue: 4 Linguagem: Inglês

10.1145/2685551

ISSN

1544-3973

Autores

Chi Bun Ching, Mauricio Álvarez-Mesa, Ben Juurlink,

Tópico(s)

Embedded Systems Design Techniques

Resumo

In this article, we investigate how code optimization techniques and low-power states of general-purpose processors improve the power efficiency of HEVC decoding. The power and performance efficiency of the use of SIMD instructions, multicore architectures, and low-power active and idle states are analyzed in detail for offline video decoding. In addition, the power efficiency of techniques such as “race to idle” and “exploiting slack” with DVFS are evaluated for real-time video decoding. Results show that “exploiting slack” is more power efficient than “race to idle” for all evaluated platforms representing smartphone, tablet, laptop, and desktop computing systems.

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