Efficient exascale discretizations: High-order finite element methods

T Kolev, P Fischer, M Min, J Dongarra… - … Journal of High …, 2021 - journals.sagepub.com
Efficient exploitation of exascale architectures requires rethinking of the numerical
algorithms used in many large-scale applications. These architectures favor algorithms that …

Low-order preconditioning for the high-order finite element de Rham complex

W Pazner, T Kolev, CR Dohrmann - SIAM Journal on Scientific Computing, 2023 - SIAM
In this paper we present a unified framework for constructing spectrally equivalent low-order-
refined discretizations for the high-order finite element de Rham complex. This theory covers …

Efficient low-order refined preconditioners for high-order matrix-free continuous and discontinuous Galerkin methods

W Pazner - SIAM Journal on Scientific Computing, 2020 - SIAM
In this paper, we design preconditioners for the matrix-free solution of high-order continuous
and discontinuous Galerkin discretizations of elliptic problems based on finite element …

Preconditioned nonsymmetric/symmetric discontinuous Galerkin method for elliptic problem with reconstructed discontinuous approximation

R Li, Q Liu, F Yang - Journal of Scientific Computing, 2024 - Springer
In this paper, we propose and analyze an efficient preconditioning method for the elliptic
problem based on the reconstructed discontinuous approximation method. This method is …

Matrix‐free preconditioning for high‐order H(curl) discretizations

AT Barker, T Kolev - Numerical Linear Algebra with Applications, 2021 - Wiley Online Library
The greater arithmetic intensity of high‐order finite element discretizations makes them
attractive for implementation on next‐generation hardware, but assembly of high‐order finite …

A Preconditioned Discontinuous Galerkin Method for Biharmonic Equation with -Reconstructed Approximation

R Li, Q Liu, F Yang - arXiv preprint arXiv:2407.03793, 2024 - arxiv.org
In this paper, we present a high-order finite element method based on a reconstructed
approximation to the biharmonic equation. In our construction, the space is reconstructed …

Efficient Residual and Matrix-Free Jacobian Evaluation for Three-Dimensional Hexahedral Finite Elements with Nearly-Incompressible Neo-Hookean Hyperelasticity …

A Mehraban - 2021 - search.proquest.com
We examine a residual and matrix-free Jacobian formulation of compressible and nearly
incompressible (ν→ 0.5) displacement-only linear isotropic elasticity with high-order …

[PDF][PDF] A low-order preconditioner for high-order element-wise divergence con-stant finite element spaces

JWD Fernandes, N Shauer… - XLIII Ibero-Latin …, 2022 - publicacoes.softaliza.com.br
A low-order preconditioner for high-order element-wise divergence con- stant finite element
spaces Page 1 A low-order preconditioner for high-order element-wise divergence constant …