System-Wide Energy Optimization for Multiple DVS Components and Real-Time Tasks

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Provided by: University of Illinois at Urbana Champaign
Topic: Hardware
Format: PDF
Most Dynamic Voltage and frequency Scaling (DVS) techniques adjust only CPU parameters; however, recent embedded systems provide multiple adjustable clocks which can be independently tuned. When considering multiple components, energy optimal frequencies depend on task set characteristics such as the number of CPU and memory access cycles. In this paper, the authors propose a realistic energy model considering multiple components with individually adjustable frequencies such as CPU, system bus and memory, and related task set characteristics.
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