Matrix properties
number of rows	2,603
number of columns	2,603
nonzeros	77,031
structural full rank?	yes
structural rank	2,603
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	750
nonzero pattern symmetry	symmetric
numeric value symmetry	99%
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'))	67,366	77,632
Cholesky flop count	2.2e+06	3.2e+06
nnz(L+U), no partial pivoting	132,129	152,661
nnz(V) for QR, upper bound nnz(L) for LU	118,830	158,401
nnz(R) for QR, upper bound nnz(U) for LU	388,507	477,729

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 750 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.