t8code - modular adaptive mesh refinement in the exascale era

The Journal of Open Source Software, vol. 10, pp. 6887

Abstract

In this paper, we present our scalable dynamic adaptive mesh refinement (AMR) library t8code, which was officially released in 2022 (Holke et al., 2022).t8code is written in C/C++, open source, and readily available at dlr-amr.github.io/t8code.It is developed and maintained at the Institute of Software Technology of the German Aerospace Center (DLR).AMR is a widely used method of locally adapting the mesh resolution according to an adequate error indicator in grid-based applications, especially in the context of computational fluid dynamics.Our software library provides fast and memory efficient parallel algorithms for dynamic AMR to handle tasks such as mesh adaptation, load-balancing, ghost computation, feature search and more.t8code can manage meshes with over one trillion mesh elements (Holke et al., 2021) and scales up to one million parallel processes (Holke, 2018).It is intended to be used as a mesh management backend in scientific and engineering simulation codes, paving the way towards high-performance applications in the upcoming exascale era.

Authors 24

1. Johannes Holke

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

2. Johannes Markert

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

3. David Knapp

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

4. Sandro Elsweijer

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

5. Niklas Böing

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

6. Ioannis Lilikakis

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

7. Jakob Fußbroich

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

8. Tabea Leistikow

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

9. Florian Becker

   Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

   Affiliation as printed

   German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

10. Veli Uenlue

    Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

    Affiliation as printed

    German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

11. Carsten Burstedde

    University of Bonn · Hausdorff Center for Mathematics

    Affiliation as printed

    Rheinische Friedrich-Wilhelms-Universität Bonn, Institute for Numerical Simulations and Hausdorff Center for Mathematics, Germany

12. Achim Basermann

    Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

    Affiliation as printed

    German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

13. Chiara Hergl

    Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

    Affiliation as printed

    German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

14. Weber Julia

    Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

    Affiliation as printed

    German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

15. Kathrin Schoenlein

    Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)

    Affiliation as printed

    German Aerospace Center (DLR), Institute of Software Technology, Department High-Performance Computing, Cologne, Germany

16. Jonas Ackerschott
    Affiliation as printed

    unaffiliated

17. Andreev Evgenii
    Affiliation as printed

    unaffiliated

18. Zoltán Csáti

    Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique

    Affiliation as printed

    CERFACS, France

19. Alexandra Dutka

    Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique

    Affiliation as printed

    CERFACS, France

20. Benedict Geihe

    University of Cologne

    Affiliation as printed

    University of Cologne, Germany

21. Pierre Kestener

    Commissariat à l'Énergie Atomique et aux Énergies Alternatives

    Affiliation as printed

    CEA, France

22. Andrew C. Kirby

    University of Wyoming

    Affiliation as printed

    University of Wyoming, USA

23. Hendrik Ranocha

    Universität Hamburg

    Affiliation as printed

    University of Hamburg, Germany

24. Michael Schlottke‐Lakemper Aachen

    RWTH Aachen University

    Affiliation as printed

    RWTH Aachen, Germany