Hierarchical Power Management for Asymmetric Multi-Core in Dark Silicon Era

Provided by: Association for Computing Machinery
Topic: Hardware
Format: PDF
Asymmetric multi-core architectures integrating cores with diverse power-performance characteristics is emerging as a promising alternative in the dark silicon era where only a fraction of the cores on chip can be powered on due to thermal limits. The authors introduce a hierarchical power management framework for asymmetric multi-cores that builds on control theory and coordinates multiple controllers in a synergistic manner to achieve optimal power-performance efficiency while respecting the thermal design power budget. They integrate their framework within Linux and implement/evaluate it on real ARM big.LITTLE asymmetric multi-core platform.

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