Workload-Aware Voltage Regulator Optimization for Power Efficient Multi-Core Processors

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Provided by: European Design and Automation Association
Topic: Hardware
Format: PDF
Many leading CPU manufacturers today sell multi-core processors which leverage technology scaling to pack multiple processing units or cores in a single die. Modern multi-core processors use power management techniques such as Dynamic Voltage and Frequency Scaling (DVFS) and Clock Gating (CG) which cause the processor to operate in various performance and power states depending on runtime workload characteristics. A Voltage Regulator (VR), which is designed to provide power to the processor at its highest performance level, can significantly degrade in efficiency when the processor operates in the deep power saving states.
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