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Test en ligne pour la détection des fautes intermittentes dans les architectures multiprocesseurs embarquées

Abstract : Nowadays embedded systems are everywhere and require always more computing power. But the evolution of technologies has a negative impact on reliability. In particular, it is expected an increase in the number of intermittent faults in future technologies. However, we do not have the benefit of detailed experimental study for this type of fault. But, to try to prevent these errors, it is important to understand their behavior and their impact on the system and applications. For this, we define an experimental platform able to observe intermittent errors. We confirm that intermittent errors can be observed very early before the wear-out period of the circuit. Moreover, these errors appear in bursts until the processor does not stop. Therefore, we confirm that it is necessary to develop online methods for the detection of intermittent errors in deep submicron integrated circuits. However, no proposed solution in the literature is appropriate for both intermittent errors and multiprocessor architectures. Thus, we developed a method of periodic testing to meet these constraints. In particular, we show that the test should not necessarily have priority to applications. This allowed us to conclude that a scheduling policy of pseudo-periodic tests, taking into account the idle processors and prioritizes tasks, provide the best compromise between performance and detection probability.
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https://tel.archives-ouvertes.fr/tel-00640599
Contributor : Julien Guilhemsang <>
Submitted on : Sunday, November 13, 2011 - 8:29:07 PM
Last modification on : Wednesday, October 14, 2020 - 4:24:11 AM
Long-term archiving on: : Friday, November 16, 2012 - 10:45:10 AM

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Julien Guilhemsang. Test en ligne pour la détection des fautes intermittentes dans les architectures multiprocesseurs embarquées. Systèmes embarqués. Université Nice Sophia Antipolis, 2011. Français. ⟨tel-00640599⟩

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