Matrix properties
number of rows	227,362
number of columns	227,362
nonzeros	11,288,630
structural full rank?	yes
structural rank	227,362
# 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?	no

author	S. Mayer
editor	J. Koster
date	2004
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	50,710,917	45,967,441
Cholesky flop count	4.7e+10	2.8e+10
nnz(L+U), no partial pivoting	101,194,472	91,707,520
nnz(V) for QR, upper bound nnz(L) for LU	140,879,463	85,695,741
nnz(R) for QR, upper bound nnz(U) for LU	271,743,447	163,032,017

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.