Matrix properties
number of rows	153,746
number of columns	153,746
nonzeros	9,080,404
structural full rank?	yes
structural rank	153,746
# of blocks from dmperm	6
# strongly connected comp.	6
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	E. Rothberg
editor	T. Davis
date	1997
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	48,554,746	36,098,724	37,501,718
Cholesky flop count	4.7e+10	1.9e+10	2.2e+10
nnz(L+U), no partial pivoting	96,955,746	72,043,702	74,849,690
nnz(V) for QR, upper bound nnz(L) for LU	123,789,043	57,916,993	61,651,868
nnz(R) for QR, upper bound nnz(U) for LU	244,956,446	109,775,724	113,997,306

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.