Power-Aware Core Management Scheme for Heterogeneous Many-Core Architecture

OF THE THESIS Power-Aware Core Management Scheme for Heterogeneous Many-Core Architecture By Myoung-Seo Kim Master of Science in Computer Engineering University of California, Irvine, 2015 Professor Jean-Luc Gaudiot, Chair The main challenge in designing the future heterogeneous many-core architecture on the same chip is to provide a solution that has low power consumption, in addition to trade off a small decrease in performance and throughput. Our design incorporates heterogeneous cores representing different points in the power-performance design space during an applications execution. Under this circumstance, system software dynamically chooses the most appropriate core to meet specific performance and power requirements. In this paper, the authors present a power-aware core management scheme based on efficient control of the core resources on heterogeneous many-core architecture as a mechanism to reduce a huge latency and a power dissipation for powering the core up from powered down. Operation is based on distinct scenarios by 3-bit core power control scheme through 5 statuses switching such as active, hot core, cold core, idle, and powered down. In addition, for more elaborated control to be power-performance efficient, this kind of status switching is exactly triggered by power-aware thread placement through heuristic thread consolidation approach. To achieve this objective, we have tried to deal with this scheme in terms of calculating peak and typical power consumption and managing core resources efficiently. Index Terms Power Management, Heterogeneous Many-Core Architecture, 3-bit Core Power Control Scheme, Power-Aware Thread Placement, Heuristic Thread Consolidation.