Matrix properties
number of rows	7,500
number of columns	7,500
nonzeros	28,462
structural full rank?	yes
structural rank	7,500
# of blocks from dmperm	713
# strongly connected comp.	1
entries not in dmperm blocks	1,247
explicit zero entries	0
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	M. Hohn
editor	T. Davis
date	2003
kind	materials problem
2D/3D problem?	yes

Additional fields	size and type
b	full 7500-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	1,821,871	2,709,299	225,592
Cholesky flop count	1.5e+09	2.5e+09	1.7e+07
nnz(L+U), no partial pivoting	3,636,242	5,411,098	444,931
nnz(V) for QR, upper bound nnz(L) for LU	228,914	239,805	212,576
nnz(R) for QR, upper bound nnz(U) for LU	443,492	472,905	428,842

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.