Matrix properties
number of rows	36,000
number of columns	36,000
nonzeros	14,220,946
structural full rank?	yes
structural rank	36,000
# 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?	yes

author	author unknown
editor	T. Davis
date	2003
kind	2D/3D problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	160,627,641	114,645,701
Cholesky flop count	1.0e+12	4.9e+11
nnz(L+U), no partial pivoting	321,219,282	229,255,402
nnz(V) for QR, upper bound nnz(L) for LU	156,052,130	-
nnz(R) for QR, upper bound nnz(U) for LU	315,748,711	-

Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.