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Tuesday, October 14 • 3:30pm - 4:20pm
Cut Power Consumption by 5x Without Losing Performance: a Big.LITTLE Software Strategy - Klaas van Gend, Vector Fabrics

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Multicore silicon architectures are everywhere. Until recently, these architectures where homogeneous. Recent big.LITTLE silicon aims to trade-off power consumption against computational throughput.
Typically, the big cores are used for high performance tasks like web browsing, games and image processing. Unfortunately, the usage of big cores comes with high power consumption levels - resulting in a disappointing battery life.
The little cores have a much lower power consumption level, but typically used in ‘idle mode’.

In this presentation we show how we reworked Chromium to use all available ‘little’ CPUs in a parallel fashion to achieve a highly responsive browser without incurring the power penalty of using the big cores. Experiments with real websites show that this results in a 5x power consumption reduction - at the same performance.

avatar for Klaas van Gend, Vector Fabrics

Klaas van Gend, Vector Fabrics

Vector Fabrics
Klaas van Gend is one of the experts for Vector Fabrics, a company specializing in multi-core and many-core programming. Vector Fabrics’ expertise and tools are used by companies around the globe to improve existing code for parallel operation. Visionaries in processor design and... Read More →

Tuesday October 14, 2014 3:30pm - 4:20pm CEST
Room 8

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