Randomized Caches Can Be Pretty Useful to Hard Real-Time Systems

Mezzetti, Enrico; Ziccardi, Marco; Vardanega, Tullio; Abella, Jaume; Quiñones, Eduardo; Cazorla, Francisco J.

doi:10.4230/lites-v002-i001-a001

Cited by 5 publications

References 19 publications

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Methodologies for the WCET Analysis of Parallel Applications on Many-Core Architectures

Nélis

Yomsi

Pinho

2015

2015 Euromicro Conference on Digital System Design

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There is an increasing eagerness to deploy and execute parallel applications on many-core infrastructures, preserving the time-predictability of the execution as required by real-time practices to upper-bound the response time of the embedded application. In this context, the paper discusses the application of the currently-available WCET analysis techniques and tools on such platforms and with highly parallel activities. After discussing the pros and cons of all different methodologies for WCET analysis, we introduce a new approach that is developed within the P-SOCRATES project. Abstract-There is an increasing eagerness to deploy and execute parallel applications on many-core infrastructures, preserving the time-predictability of the execution as required by real-time practices to upper-bound the response time of the embedded application. In this context, the paper discusses the application of the currently-available WCET analysis techniques and tools on such platforms and with highly parallel activities. After discussing the pros and cons of all different methodologies for WCET analysis, we introduce a new approach that is developed within the P-SOCRATES project.

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Methodologies for the WCET Analysis of Parallel Applications on Many-Core Architectures

Nélis

Yomsi

Pinho

2015

2015 Euromicro Conference on Digital System Design

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EPC Enacted: Integration in an Industrial Toolbox and Use against a Railway Application

Mezzetti

Fernandez

Bardizbanyan³

et al. 2017

2017 IEEE Real-Time and Embedded Technology and Applications Symposium (RTAS)

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Abstract-Measurement-based timing analysis approaches are increasingly making their way into several industrial domains on account of their good cost-benefit ratio. The trustworthiness of those methods, however, suffers from the limitation that their results are only valid for the particular paths and execution conditions that the user is able to explore with the available input vectors. It is generally not possible to guarantee that the collected measurements are fully representative of the worst-case timing behaviour.In the context of measurement-based probabilistic timing analysis, the Extended Path Coverage (EPC) approach has been recently proposed as a means to extend the representativeness of measurement observations, to obtain the same effect of full path coverage. At the time of its first publication, EPC had not reached an implementation maturity that could be trialled industrially. In this work we analyze the practical implications of using EPC with real-world applications, and discuss the challenges in integrating it in an industrial-quality toolchain. We show that we were able to meet EPC requirements and successfully evaluate the technique on a real Railway application, on top of a commercial toolchain and full execution stack.

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Increasing the Reliability of Software Timing Analysis for Cache-Based Processors

Milutinović

Mezzetti

Abella

et al. 2019

IEEE Trans. Comput.

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Randomized Caches Can Be Pretty Useful to Hard Real-Time Systems

Cited by 5 publications

References 19 publications

Methodologies for the WCET Analysis of Parallel Applications on Many-Core Architectures

Methodologies for the WCET Analysis of Parallel Applications on Many-Core Architectures

EPC Enacted: Integration in an Industrial Toolbox and Use against a Railway Application

Increasing the Reliability of Software Timing Analysis for Cache-Based Processors

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