Matrix properties
number of rows	100,196
number of columns	100,196
nonzeros	544,688
structural full rank?	yes
structural rank	100,196
# 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	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	2,378,217	2,446,644
Cholesky flop count	2.9e+08	2.6e+08
nnz(L+U), no partial pivoting	4,656,238	4,793,092
nnz(V) for QR, upper bound nnz(L) for LU	6,147,771	4,919,265
nnz(R) for QR, upper bound nnz(U) for LU	11,610,612	9,227,969

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.