Matrix properties
number of rows	9,000
number of columns	9,000
nonzeros	3,279,690
structural full rank?	yes
structural rank	9,000
# 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	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	author unknown
editor	T. Davis
date	2003
kind	2D/3D problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	15,894,180	12,723,003
Cholesky flop count	3.7e+10	2.2e+10
nnz(L+U), no partial pivoting	31,779,360	25,437,006
nnz(V) for QR, upper bound nnz(L) for LU	13,949,445	16,902,066
nnz(R) for QR, upper bound nnz(U) for LU	27,269,737	27,746,794

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.