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| Authors: | Pratyush Kumar, Lothar Thiele |
| Group: | Computer Engineering |
| Type: | Inproceedings |
| Title: | Timing Analysis on a Processor with Temperature-Controlled Speed Scaling |
| Year: | 2012 |
| Month: | April |
| Pub-Key: | KT12a |
| Book Titel: | In Proceedings of the 18th IEEE Real-Time and Embedded Technology and Applications Symposium |
| Pages: | 77-87 |
| Keywords: | MPA, RTC, Thermal, Feedback control |
| Publisher: | IEEE |
| Abstract: | Several recent works consider the problem of temperature-constrained scheduling of jobs. In such attempts, speed of the processor and the execution of jobs is software- controlled such that temperature and performance constraints are met. An alternative approach is to use measurements from temperature sensors to actuate the speed of the processor as a feedback control loop. Though such a solution explicitly and independently meets the thermal constraints, the analysis of the real-time properties of tasks served by such a processor is not straightforward. In this paper, we study this problem for a variable stream of jobs characterized by an input arrival rate. We show that an intuitive notion of monotonicity extends to such a processor. Using this property, we present an analytical technique to determine the worst-case delay suffered by jobs. The presented technique efficiently and tightly determines the delay as a function of the initial temperature. The simplicity of this analysis motivates further analysis and mainstream use of such systems. |
| Location: | Beijing, China |
| Resources: | [BibTeX] [Paper as PDF] |
