A control-theoretic approach for energy efficient CPU-GPU subsystem in mobile platforms

Autor:	David Kadjo, Michael Kishinevsky, Paul V. Gratz, Raid Ayoub
Rok vydání:	2015
Předmět:	Computer Science::Performance Power management Queue management system business.industry Computer science Embedded system CPU time Central processing unit Energy consumption CPU shielding business Computer Science::Operating Systems Efficient energy use
Zdroj:	DAC
DOI:	10.1145/2744769.2744773
Popis:	This paper presents a control-theoretic approach to optimize the energy consumption of integrated CPU and GPU subsystems for graphic applications. It achieves this via a dynamic management of the CPU and GPU frequencies. To this end, we first model the interaction between the GPU and CPU as a queuing system. Second, we formulate a Multi-Input-Multi-Output state-space closed loop control to ensure robustness and stability. We evaluated this control on an Intel Baytrail-based Android platform. Experimental evaluations show energy savings of 17.4% in the CPU-GPU subsystem with a low performance impact of 0.9%.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7003960bda4a41c127900dbbc001569a https://doi.org/10.1145/2744769.2744773 Zobrazit plný text záznamu