Matrix properties
number of rows	17,222
number of columns	17,222
nonzeros	211,064
structural full rank?	yes
structural rank	17,222
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	G. Kumfert, A. Pothen
editor	N. Gould, Y. Hu, J. Scott
date	2004
kind	computational fluid dynamics problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	2,337,186	1,859,792
Cholesky flop count	1.1e+09	7.2e+08
nnz(L+U), no partial pivoting	4,657,150	3,702,362
nnz(V) for QR, upper bound nnz(L) for LU	5,886,754	5,358,733
nnz(R) for QR, upper bound nnz(U) for LU	14,232,397	10,357,569

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.