Janna/ML_Laplace
2D Poisson problem, meshless local PetrovGalerkin method
Name 
ML_Laplace 
Group 
Janna 
Matrix ID 
2648 
Num Rows

377,002 
Num Cols

377,002 
Nonzeros

27,582,698 
Pattern Entries

27,689,972 
Kind

Structural Problem 
Symmetric

No 
Date

2012 
Author

C. Janna, M. Ferronato, G. Pini 
Editor

T. Davis 
Structural Rank 
377,002 
Structural Rank Full 
true 
Num Dmperm Blocks

2,503 
Strongly Connect Components

2,503 
Num Explicit Zeros

107,274 
Pattern Symmetry

100% 
Numeric Symmetry

0% 
Cholesky Candidate

no 
Positive Definite

no 
Type

real 
Download 
MATLAB
Rutherford Boeing
Matrix Market

Notes 
Authors: Carlo Janna, Massimiliano Ferronato, Giorgio Pini
Matrix type: Unsymmetric
# equations: 377,002
# nonzeroes: 27,689,972
Problem description: Poisson problem
The matrix ML_Laplace has been obtained by discretizing a 2D
Poisson equation with a Meshless Local PetrovGalerkin method.
Further information can be found in the following papers:
1) G. Pini, A. Mazzia, and F. Sartoretto. Accurate MLPG solution
of 3D potential problems. CMES  Computer Modeling in Engineering
& Sciences 36 (2008), pp. 4364.
2) M. Ferronato, C. Janna and G. Pini. A generalized Block FSAI
preconditioner for unsymmetric indefinite matrices. Journal of
Computational and Applied Mathematics (2012), submitted.
