The certification objectives for airborne electronic hardware defined in AMC20-152A [EASA, 2021] and in AMC20-193 [EASA, 2020] capture some of the activities required for an applicant to embed a hardware platform in a safety-critical avionic system. For COTS (Commercially available Off-The-Shelf) platforms in particular, these objectives require applicants to identify functions, configuration settings, and resources present on the platform, and assess their use by the system. AMC20-152A however recognizes that documentation regarding the behavior of a COTS may be incomplete. There is thus a strong push for applicants to the certification of a COTS to demonstrate their mastery of the platform, to highlight relevant factors (functions, settings, resources, etc.), and their use in their system. We outline in the following a standard approach to the exploration of unchecked factors of a platform, considering existing approaches in the literature, to build such a mastery. Our approach incrementally incorporates and validates knowledge of various factors by including them in micro-simulations compared to experimental ground truth.
@InProceedings{cazanove_et_al:OASIcs.WCET.2024.3, author = {Cazanove, C\'{e}dric and Lesage, Benjamin and Boniol, Fr\'{e}d\'{e}ric and Ermont, J\'{e}r\^{o}me}, title = {{Invited Paper: Assessing Unchecked Factors for Certification: An Experimental Approach for GPU Cache Parameters}}, booktitle = {22nd International Workshop on Worst-Case Execution Time Analysis (WCET 2024)}, pages = {3:1--3:12}, series = {Open Access Series in Informatics (OASIcs)}, ISBN = {978-3-95977-346-1}, ISSN = {2190-6807}, year = {2024}, volume = {121}, editor = {Carle, Thomas}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/OASIcs.WCET.2024.3}, URN = {urn:nbn:de:0030-drops-204719}, doi = {10.4230/OASIcs.WCET.2024.3}, annote = {Keywords: GPU, benchmarks, simulation, certification} }
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