Exploiting performance, dynamic power and energy scaling in full‐system simulators
Liana Dessandre Duenha, Guilherme Madalozzo, Fernando Gehm Moraes, Rodolfo Azevedo · Concurrency and Computation Practice and Experience · 2016
Summary Energy consumption constraints have become a critical issue in Multiprocessor Systems on Chip (MPSoC) designs. Whereas processor performance comes with a high power cost, there is an increasing interest in exploring the trade‐off between power and performance, taking into account the target application domain. Dynamic Voltage and Frequency Scaling (DVFS) techniques adaptively scale frequency or voltage level of CPU allowing it to reach just enough performance to process the system workload while meeting throughput constraints, and thereby, reducing the energy consumption. To explore this wide design space for energy efficiency and performance, hardware and software components, a system‐level simulation infrastructure must provide features to evaluate power savings mechanisms in early stages of the design. This paper presents an extension work of a framework for MPSoCs designs to support DVFS in MPSoCs simulators and evaluates three DVFS mechanisms. Our experiments show that applying DVFS in the system can save power and energy consumption, with negligible loss of performance. Copyright © 2016 John Wiley & Sons, Ltd.