IEEE Transactions on Computers

IEEE Transactions on Computers (TC) is a monthly publication that publishes research in such areas as computer organizations and architectures, digital devices, operating systems, and new and important applications and trends.
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From the July 2012 Issue

Variability-Aware Task Allocation for Energy-Efficient Quality of Service Provisioning in Embedded Streaming Multimedia Applications

By Francesco Paterna, Andrea Acquaviva, Alberto Caprara, Francesco Papariello, Giuseppe Desoli, & Luca Benini

Featured article thumbnail imageMultimedia streaming applications running on next-generation parallel multiprocessor arrays in sub-45 nm technology face new challenges related to device and process variability, leading to performance and power variations across the cores. In this context, Quality of Service (QoS), as well as energy efficiency, could be severely impacted by variability. In this work, we propose a runtime variability-aware workload distribution technique for enhancing real-time predictability and energy efficiency based on an innovative Linear-Programming + Bin-Packing formulation which can be solved in linear time. We demonstrate our approach on the virtual prototype of a next-generation industrial multicore platform running representative multimedia applications.

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