Matrix properties
number of rows	148,770
number of columns	148,770
nonzeros	10,641,602
structural full rank?	yes
structural rank	148,770
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	2,400
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

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'))	90,924,001	70,277,933
Cholesky flop count	1.1e+11	6.2e+10
nnz(L+U), no partial pivoting	181,699,232	140,407,096
nnz(V) for QR, upper bound nnz(L) for LU	158,509,398	130,232,145
nnz(R) for QR, upper bound nnz(U) for LU	308,970,286	251,448,750

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 2400 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.