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Scalable algorithms for adaptive mesh refinement with arbitrary element types

Holke, Johannes and Burstedde, Carsten (2018) Scalable algorithms for adaptive mesh refinement with arbitrary element types. Scalable algorithms for adaptive mesh refinement with arbitrary element types, 30 Nov 2018, Toulouse, France.

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Abstract

Managing adaptive meshes in parallel is a major challenge, especially when the meshes are refined and coarsened frequently during a single simulation. Important factors for scalability are for example an efficient encoding of the mesh, mesh adaptation, load-balancing and the creation of a layer of ghost(halo) elements. In the past decades the forest-of-trees approach using space-filling curves has been established as a fast and reliable method that offers both geometric flexibility and excellent parallel scalability. However, it was mostly limited to hexahedral meshes. Our work that we present in this talk is an extension of this approach to meshes with arbitrary element types with particular focus on tetrahedral and hybrid meshes. For this kind of meshes, the forest-of-trees approach is an alternative to using unstructured techniques, decreasing the overall memory footprint while improving the parallel scalability. We present our algorithms and their implementation in the t8code library and demonstrate strong and weak scalability to several hundred thousand MPI ranks.

Item URL in elib:https://elib.dlr.de/124383/
Document Type:Conference or Workshop Item (Lecture)
Title:Scalable algorithms for adaptive mesh refinement with arbitrary element types
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Holke, JohannesJohannes.Holke (at) dlr.deUNSPECIFIED
Burstedde, CarstenUniversity of BonnUNSPECIFIED
Date:30 November 2018
Refereed publication:No
Open Access:Yes
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:Adaptive mesh refinement space-filling curves hybrid tetrahedra prism
Event Title:Scalable algorithms for adaptive mesh refinement with arbitrary element types
Event Location:Toulouse, France
Event Type:Other
Event Dates:30 Nov 2018
Organizer:Gabriel Staffelbach
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Space Technology
DLR - Research area:Raumfahrt
DLR - Program:R SY - Technik für Raumfahrtsysteme
DLR - Research theme (Project):R - Vorhaben SISTEC
Location: Köln-Porz
Institutes and Institutions:Institut of Simulation and Software Technology > High Performance Computing
Deposited By: Holke, Johannes
Deposited On:05 Dec 2018 15:29
Last Modified:06 Nov 2019 10:58

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