Energy-Efficient Real-Time Task Scheduling for a DVS System with a Non-DVS Processing Element
Resource
IEEE 27th Real-Time Systems Symposium
Journal
IEEE 27th Real-Time Systems Symposium
Pages
303-312
Date Issued
2006
Date
2006
Author(s)
Abstract
Multiple processing elements are often adopted in the current designs of embedded systems. Such configurations impose challenges on hardware/software co-designs with energy-efficient considerations. This paper targets energy-efficient real-time task scheduling of such popular configurations, in which systems are equipped with a DVS processor and a non-DVS processing element (PE). We consider task scheduling under different power consumption models of the non-DVS PE. When the power consumption of the non-DVS PE is independent on the assigned workload, a fully polynomial-time approximation scheme is developed for energy-efficient scheduling. When the energy consumption of the non-DVS PE depends on the assigned workload, a 0.5-approximation algorithm is developed to maximize the energy saving, compared to the execution of tasks on a DVS processor. Extensive simulations were performed to evaluate the capability of our proposed algorithms. The results show that our algorithms are very effective in energy-efficiency. © 2006 IEEE.
SDGs
Other Subjects
Approximation algorithms; Computer simulation; Energy efficiency; Mathematical models; Polynomial approximation; Scheduling; Software design; DVS scheduling; Heterogeneous multiprocessor scheduling; Polynomial-time approximation; Real time systems
Type
conference paper
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