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SoNICS: design and workflow of a new CFD software
[SoNICS : conception et flux opérationnel d’un logiciel de CFD]
Comptes Rendus. Mécanique, Volume 353 (2025), pp. 1261-1287

Cet article fait partie du numéro thématique Les environnements de simulation multiphysiques coordonné par Nicolas Bertier et al..

SoNICS is a new CFD software which builds upon the experience acquired in the years developing and extending the elsA CFD tool implemented at ONERA and used in industry. This article presents an overview of the SoNICS design and workflow, the motivation for this new tool, its structure and how it manages the user configuration (including the input mesh) to produce in the end a graph of tasks to schedule. In particular, we will discuss how well-studied concepts like variability, task graphs and compilations passes are cornerstones of the SoNICS workflow and allow for: a relatively easy evolution and maintenance of the code-base; a relatively straightforward user experience; and good performances.

SoNICS est un nouveau logiciel CFD qui s’appuie sur l’expérience acquise durant les années de développement et d’extension de l’outil CFD elsA, implanté à l’ONERA et utilisé dans l’industrie. Cet article présente une vue d’ensemble de la conception de SoNICS et de son flux opérationnel, la motivation derrière ce nouvel outil, sa structure et la manière dont il gère la configuration utilisateur (y compris le maillage d’entrée) pour produire au final un graphe de tâches à exécuter. Nous aborderons en particulier la manière dont des concepts bien étudiés tels que la variabilité, les graphes de tâches et les passes de compilation constituent les pierres angulaires du flux opérationnel de SoNICS et permettent : une évolution et une maintenance relativement faciles de la base de code ; une expérience utilisateur relativement simple ; et de bonnes performances.

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DOI : 10.5802/crmeca.334
Keywords: Computational fluid dynamics, variability, code assembly, compilation passes
Mots-clés : Mécanique des fluides numérique, variabilité, assemblage de code, passes de compilation

Michael Lienhardt  1   ; Bertrand Michel  2

1 DTIS, ONERA, Université Paris-Saclay, 91120 Palaiseau, France
2 DAAA, ONERA, 92320 Châtillon, France
Licence : CC-BY 4.0
Droits d'auteur : Les auteurs conservent leurs droits
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Michael Lienhardt; Bertrand Michel. SoNICS: design and workflow of a new CFD software. Comptes Rendus. Mécanique, Volume 353 (2025), pp. 1261-1287. doi: 10.5802/crmeca.334

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