2D Poisson problem, meshless local Petrov-Galerkin 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
Authors: Carlo Janna, Massimiliano Ferronato, Giorgio Pini       
Matrix type: Unsymmetric                                         
# equations:       377,002                                       
# non-zeroes:   27,689,972                                       
Problem description: Poisson problem                             
The matrix ML_Laplace has been obtained by discretizing a 2D     
Poisson equation with a Meshless Local Petrov-Galerkin 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. 43-64.                                 
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.