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Power Minimisation for Real-Time Dataflow Applications

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Executive Summary

Energy efficient execution of applications is important for many reasons, e.g. time between battery charges, device temperature. Voltage and Frequency Scaling (VFS) enables applications to be run at lower frequencies on hardware resources thereby consuming less power. Real-time applications have deadlines that must be met otherwise their output is devalued. Dataflow modelling of real-time applications enables off-line verification of the application's temporal requirements. In this paper, the authors describe a method to reduce the combined static and dynamic energy consumption using a Dynamic VFS (DVFS) technique for dataflow modelled real-time applications that may be mapped onto multiple hardware resources.

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