Multiphysics simulations: Challenges and opportunities

DE Keyes, LC McInnes, C Woodward… - … Journal of High …, 2013 - journals.sagepub.com
We consider multiphysics applications from algorithmic and architectural perspectives,
where “algorithmic” includes both mathematical analysis and computational complexity, and …

Parallel geometric-algebraic multigrid on unstructured forests of octrees

H Sundar, G Biros, C Burstedde, J Rudi… - SC'12: Proceedings …, 2012 - ieeexplore.ieee.org
We present a parallel multigrid method for solving variable-coefficient elliptic partial
differential equations on arbitrary geometries using highly adapted meshes. Our method is …

A massively parallel geometric multigrid solver on hierarchically distributed grids

S Reiter, A Vogel, I Heppner, M Rupp… - … and Visualization in …, 2013 - Springer
A parallel geometric multigrid solver on hierarchically distributed grids is presented. Using a
tree-structure for grid distribution onto the processing entities, the multigrid cycle is …

Parallel multigrid on hierarchical hybrid grids: a performance study on current high performance computing clusters

B Gmeiner, H Köstler, M Stürmer… - … Practice and Experience, 2014 - Wiley Online Library
This article studies the performance and scalability of a geometric multigrid solver
implemented within the hierarchical hybrid grids (HHG) software package on current high …

[HTML][HTML] Optimization of the multigrid-convergence rate on semi-structured meshes by local Fourier analysis

B Gmeiner, T Gradl, F Gaspar, U Rüde - Computers & Mathematics with …, 2013 - Elsevier
In this paper a local Fourier analysis for multigrid methods on tetrahedral grids is presented.
Different smoothers for the discretization of the Laplace operator by linear finite elements on …

Parallel 3d shape optimization for cellular composites on large distributed-memory clusters

J Pinzon, M Siebenborn, A Vogel - Journal of Advanced Simulation …, 2020 - jstage.jst.go.jp
Skin modeling is an ongoing research area that highly benefits from modern parallel
algorithms. This article aims at applying shape optimization to compute cell size and …

Multigrid methods on semi-structured grids

C Rodrigo, FJ Gaspar, FJ Lisbona - Archives of Computational Methods in …, 2012 - Springer
In this work, efficient block-wise multigrid solvers on semi-structured triangular grids are
presented for two-dimensional problems. They take advantage of the flexibility of triangular …

Stencil computations for PDE‐based applications with examples from DUNE and hypre

C Engwer, RD Falgout, UM Yang - … and Computation: Practice …, 2017 - Wiley Online Library
Stencils are commonly used to implement efficient on‐the‐fly computations of linear
operators arising from partial differential equations. At the same time the term “stencil” is not …

Code generation approaches for parallel geometric multigrid solvers

H Köstler, M Heisig, N Kohl, S Kuckuk… - Analele ştiinţifice ale …, 2020 - sciendo.com
Software development for applications in computational science and engineering has
become complex in recent years. This is mainly due to the increasing parallelism and …

A generic prototype to benchmark algorithms and data structures for hierarchical hybrid grids

S Kuckuk, B Gmeiner, H Köstler… - … Science and Engineering …, 2014 - ebooks.iospress.nl
Many problems in computational science and engineering require the numerical solution of
partial differential equations and thus the solution of large, sparse linear systems of …