Matrix properties
number of rows	2,548
number of columns	2,548
nonzeros	57,308
structural full rank?	yes
structural rank	2,548
# of blocks from dmperm	2
# strongly connected comp.	2
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

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'))	53,998	67,199	53,998
Cholesky flop count	1.4e+06	2.4e+06	1.4e+06
nnz(L+U), no partial pivoting	105,448	131,850	105,448
nnz(V) for QR, upper bound nnz(L) for LU	67,519	99,024	80,758
nnz(R) for QR, upper bound nnz(U) for LU	181,795	241,717	203,570

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.