Matrix properties
number of rows	7,740
number of columns	7,740
nonzeros	456,188
structural full rank?	yes
structural rank	7,740
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	1,824
nonzero pattern symmetry	symmetric
numeric value symmetry	77%
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
nnz(chol(P*(A+A'+s*I)*P'))	1,612,967	1,249,869
Cholesky flop count	5.8e+08	3.2e+08
nnz(L+U), no partial pivoting	3,218,194	2,491,998
nnz(V) for QR, upper bound nnz(L) for LU	1,408,294	2,129,618
nnz(R) for QR, upper bound nnz(U) for LU	3,107,372	4,556,554

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1824 explicit zero entries.

Maintained by Tim Davis, last updated 04-May-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.