DocumentCode :
3476730
Title :
Scheduling Aperiodic Tasks in Next Generation Embedded Real-Time Systems
Author :
Ahmed, Rizwan ; Ramanathan, Parmesh ; Saluja, Krishan Kumar ; Chunhua Yao
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Wisconsin Madison, Madison, WI, USA
fYear :
2013
fDate :
5-10 Jan. 2013
Firstpage :
25
Lastpage :
30
Abstract :
In this paper we investigate a method of scheduling aperiodic tasks with a given periodic schedule, in a thermally constrained embedded real-time system. Considering thermal constraints is important for current and future processing systems because of the rapid rise in the power densities of processors, especially in multicore environments. Therefore, if thermal constraints are not considered, processor temperatures may increase to levels at which the reliability of the underlying semiconductor devices is compromised. As part of the proposed approach, an accurate and non-extensive temperature estimation scheme is presented. Based on the temperature estimation scheme, a scheduling scheme for aperiodic tasks in the presence of periodic tasks is proposed. The primary advantage of the proposed scheme is that it can account for temporal variations in task power consumption. The results show that our approach can provide significant improvements in aperiodic task response times, over schemes that do not allow tasks to have temporal variations in power consumption.
Keywords :
embedded systems; power aware computing; power consumption; scheduling; temperature; aperiodic task scheduling; periodic task; processor power density; semiconductor device; task power consumption; temperature estimation scheme; thermally constrained embedded realtime system; Mathematical model; Multicore processing; Power demand; Processor scheduling; Program processors; Schedules; Temperature sensors; aperiodic tasks; real-time systems; thermal-aware scheduling;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
VLSI Design and 2013 12th International Conference on Embedded Systems (VLSID), 2013 26th International Conference on
Conference_Location :
Pune
ISSN :
1063-9667
Print_ISBN :
978-1-4673-4639-9
Type :
conf
DOI :
10.1109/VLSID.2013.157
Filename :
6472608
Link To Document :
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