Algebraic multigrid methods

J Xu, L Zikatanov - Acta Numerica, 2017 - cambridge.org
This paper provides an overview of AMG methods for solving large-scale systems of
equations, such as those from discretizations of partial differential equations. AMG is often …

Compatible relaxation and coarsening in algebraic multigrid

JJ Brannick, RD Falgout - SIAM Journal on Scientific Computing, 2010 - SIAM
We introduce a coarsening algorithm for algebraic multigrid (AMG) based on the concept of
compatible relaxation (CR). The algorithm is significantly different from standard methods …

A root-node--based algebraic multigrid method

TA Manteuffel, LN Olson, JB Schroder… - SIAM Journal on …, 2017 - SIAM
This paper provides a unified and detailed presentation of root-node--style algebraic
multigrid (AMG). AMG is a popular and effective iterative method for solving large, sparse …

Engineering fast multilevel support vector machines

E Sadrfaridpour, T Razzaghi, I Safro - Machine Learning, 2019 - Springer
The computational complexity of solving nonlinear support vector machine (SVM) is
prohibitive on large-scale data. In particular, this issue becomes very sensitive when the …

Optimization of Sparse Matrix Computation for Algebraic Multigrid on GPUs

Y Wang, F Chang, B Wei, J Gao, W Ji - ACM Transactions on Architecture …, 2024 - dl.acm.org
AMG is one of the most efficient and widely used methods for solving sparse linear systems.
The computational process of AMG mainly consists of a series of iterative calculations of …

Coarse-grid selection using simulated annealing

TU Zaman, SP MacLachlan, LN Olson… - Journal of Computational …, 2023 - Elsevier
Multilevel techniques are efficient approaches for solving the large linear systems that arise
from discretized partial differential equations and other problems. While geometric multigrid …

Accelerating algebraic multigrid methods via artificial neural networks

PF Antonietti, M Caldana, L Dede' - Vietnam Journal of Mathematics, 2023 - Springer
We present a novel deep learning-based algorithm to accelerate—through the use of
Artificial Neural Networks (ANNs)—the convergence of Algebraic Multigrid (AMG) methods …

A new smoothed aggregation multigrid method for anisotropic problems

MW Gee, JJ Hu, RS Tuminaro - Numerical Linear Algebra with …, 2009 - Wiley Online Library
A new prolongator is proposed for smoothed aggregation (SA) multigrid. The proposed
prolongator addresses a limitation of standard SA when it is applied to anisotropic problems …

A matrix dependent/algebraic multigrid approach for extruded meshes with applications to ice sheet modeling

R Tuminaro, M Perego, I Tezaur, A Salinger… - SIAM Journal on Scientific …, 2016 - SIAM
A multigrid method is proposed that combines ideas from matrix dependent multigrid for
structured grids and algebraic multigrid for unstructured grids. It targets problems where a …

Algebraic multigrid solvers for complex-valued matrices

SP MacLachlan, CW Oosterlee - SIAM Journal on scientific computing, 2008 - SIAM
In the mathematical modeling of real-life applications, systems of equations with complex
coefficients often arise. While many techniques of numerical linear algebra, eg, Krylov …