Matrix properties
number of rows	24,696
number of columns	24,696
nonzeros	1,751,178
structural full rank?	yes
structural rank	24,696
# 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	R. Grimes
editor	T. Davis
date	1995
kind	materials problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	12,803,170	9,513,378
Cholesky flop count	1.2e+10	5.6e+09
nnz(L+U), no partial pivoting	25,581,644	19,002,060
nnz(V) for QR, upper bound nnz(L) for LU	11,745,450	13,658,247
nnz(R) for QR, upper bound nnz(U) for LU	23,259,357	26,036,775

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.