Year: 2024
Type: conference-paper
Abstract: Reliability metrics for hardware faults in safety-/mission-critical systems have been historically based solely on hardware failure rates, quantitatively ignoring any effect of the software. Software reliability is usually considered only in terms of bugs/defects, which is a quantity hard to estimate analytically. In this article, we explore the problem of quantifying the impact of software in reliability against Single Event Upsets, highlighting the limits of the current standards that restrict the use of Commercial-Off-The-Shelf components for critical scenarios. We show how to obtain valid software reliability metrics and how this methodology significantly improves reliability estimation compared to hardware-only estimation. The reliability gain is further improved when considering real-time metrics. This analysis is the first step towards a reconciliation between software and hardware reliability and enables the quantification of reliability introduced by Software-Implemented Hardware Fault Tolerance approaches.
Authors: Federico Reghenzani, William Fornaciari
Institution: Politecnico di Milano
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4404953481