An Approximate Minimum Degree Ordering Algorithm
SIAM Journal on Matrix Analysis and Applications
Improving the Run Time and Quality of Nested Dissection Ordering
SIAM Journal on Scientific Computing
The Multifrontal Solution of Indefinite Sparse Symmetric Linear
ACM Transactions on Mathematical Software (TOMS)
Unified Analysis of Discontinuous Galerkin Methods for Elliptic Problems
SIAM Journal on Numerical Analysis
Iterative Methods for Sparse Linear Systems
Iterative Methods for Sparse Linear Systems
Task Scheduling in an Asynchronous Distributed Memory Multifrontal Solver
SIAM Journal on Matrix Analysis and Applications
A fast direct solver for boundary integral equations in two dimensions
Journal of Computational Physics
Direct Methods for Sparse Linear Systems (Fundamentals of Algorithms 2)
Direct Methods for Sparse Linear Systems (Fundamentals of Algorithms 2)
Parallel black box $$\mathcal {H}$$-LU preconditioning for elliptic boundary value problems
Computing and Visualization in Science
A Fast Direct Solver for a Class of Elliptic Partial Differential Equations
Journal of Scientific Computing
Computing with Hp-Adaptive Finite Elements, Vol. 2: Frontiers Three Dimensional Elliptic and Maxwell Problems with Applications
Superfast Multifrontal Method for Large Structured Linear Systems of Equations
SIAM Journal on Matrix Analysis and Applications
Computers & Mathematics with Applications
Journal of Computational Physics
Geodesics in heat: A new approach to computing distance based on heat flow
ACM Transactions on Graphics (TOG)
Journal of Scientific Computing
A fast nested dissection solver for Cartesian 3D elliptic problems using hierarchical matrices
Journal of Computational Physics
Hi-index | 31.46 |
We present a fast direct algorithm for solutions to linear systems arising from 2D elliptic equations. We follow the approach in Xia et al. (2009) on combining the multifrontal method with hierarchical matrices. We present a variant of that approach with additional hierarchical structure, extend it to quasi-uniform meshes, and detail an adaptive decomposition procedure for general meshes. Linear time complexity is shown for a quasi-regular grid and demonstrated via numerical results for the adaptive algorithm.