Foundations and Trends® in Electronic Design Automation > Vol 8 > Issue 3-4

Time-Predictable Embedded Software on Multi-Core Platforms: Analysis and Optimization

Sudipta Chattopadhyay, Linköping University, Sweden, sudipta.chattopadhyay@liu.se Abhik Roychoudhury, National University of Singapore, Singapore, abhik@comp.nus.edu.sg Jakob Rosén, Linköping University, Sweden, jakob.rosen@gmail.com Petru Eles, Linköping University, Sweden, petru.eles@liu.se Zebo Peng, Linköping University, Sweden, zebo.peng@liu.se
 
Suggested Citation
Sudipta Chattopadhyay, Abhik Roychoudhury, Jakob Rosén, Petru Eles and Zebo Peng (2014), "Time-Predictable Embedded Software on Multi-Core Platforms: Analysis and Optimization", Foundations and Trends® in Electronic Design Automation: Vol. 8: No. 3-4, pp 199-356. http://dx.doi.org/10.1561/1000000037

Published: 24 Jul 2014
© 2014 S. Chattopadhyay, A. Roychoudhury, J. Rosén, P. Eles, and Z. Peng
 
Subjects
Verification,  Modeling and Analysis
 

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In this article:
1. Introduction
2. WCET analysis and challenges with multi-core architecture
3. WCET analysis for multi-core platforms
4. WCET optimization for multi-core platforms
5. Time-predictable multi-core architecture for WCET analysis
6. Discussion and future work
7. Conclusions
Acknowledgements
References

Abstract

Multi-core architectures have recently gained popularity due to their high-performance and low-power characteristics. Most of the modern desktop systems are now equipped with multi-core processors. Despite the wide-spread adaptation of multi-core processors in desktop systems, using such processors in embedded systems still poses several challenges. Embedded systems are often constrained by several extra-functional aspects, such as time. Therefore, providing guarantees for time-predictable execution is one of the key requirements for embedded system designers. Multi-core processors adversely affect the time-predictability due to the presence of shared resources, such as shared caches and shared buses. In this contribution, we shall first discuss the challenges imposed by multi-core architectures in designing time-predictable embedded systems. Subsequently, we shall describe, in details, a comprehensive solution to guarantee time-predictable execution on multi-core platforms. Besides, we shall also perform a discussion of different techniques to provide an overview of the state-of-the-art solutions in this topic. Through this work, we aim to provide a solid background on recent trends of research towards achieving time-predictability on multi-cores. Besides, we also highlight the limitations of the state-of-the-art and discuss future research opportunities and challenges to accomplish time-predictable execution on multi-core platforms.

DOI:10.1561/1000000037
ISBN: 978-1-60198-794-5
174 pp. $99.00
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ISBN: 978-1-60198-795-2
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Table of contents:
1. Introduction
2. WCET analysis and challenges with multi-core architecture
3. WCET analysis for multi-core platforms
4. WCET optimization for multi-core platforms
5. Time-predictable multi-core architecture for WCET analysis
6. Discussion and future work
7. Conclusions
6. Discussion and future work
7. Conclusions
Acknowledgements
References

Time-Predictable Embedded Software on Multi-Core Platforms

Multi-core architectures have recently gained in popularity due to their high-performance and low-power characteristics. Most modern desktop systems are now equipped with multi-core processors. Despite the wide-spread adaptation of multi-core processors in desktop systems, using such processors in embedded systems still poses several challenges. Real-time, embedded systems often need to satisfy several extra-functional constraints, such as timing. In particular, for hard real-time systems, such timing constraints are strictly enforced. Violation of these timing constraints may have serious consequences, potentially costing human lives. Therefore, static timing-analysis of hard real-time systems has emerged as a critical problem to solve.

This monograph first discusses the challenges imposed by multi-core architectures in designing time-predictable embedded systems. It goes on to describe, in detail, a comprehensive solution to guarantee time-predictable execution on multi-core platforms. It also discusses various techniques and surveys the state-of-the-art in terms of available solutions. Throughout the text, the aim is to provide a solid background on recent trends in research towards achieving time-predictability on multi-cores. It also highlights the limitations of the state-of-the-art and discusses future research opportunities and challenges to accomplish time-predictable execution on multi-core platforms.

The monograph is an ideal reference for embedded systems designers and researchers interested in having a foundation for building time-predictable software on multi-core platforms. It will also help the research community to address the existing challenges in this area.

 
EDA-037