Matrix properties
number of rows	3,079
number of columns	3,079
nonzeros	53,099
structural full rank?	yes
structural rank	3,079
# of blocks from dmperm	3
# strongly connected comp.	3
entries not in dmperm blocks	240
explicit zero entries	744
nonzero pattern symmetry	symmetric
numeric value symmetry	100%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	A. Baggag, Y. Saad
editor	A. Baggag, Y. Saad
date	1994
kind	computational fluid dynamics problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	63,978	75,620	139,021
Cholesky flop count	1.8e+06	2.6e+06	8.4e+06
nnz(L+U), no partial pivoting	124,877	148,161	275,203
nnz(V) for QR, upper bound nnz(L) for LU	127,553	150,096	126,001
nnz(R) for QR, upper bound nnz(U) for LU	358,873	392,502	308,438

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 744 explicit zero entries.

Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.