Matrix properties
number of rows	80,209
number of columns	80,209
nonzeros	307,604
structural full rank?	yes
structural rank	80,209
# of blocks from dmperm	28,005
# strongly connected comp.	27,923
entries not in dmperm blocks	23,846
explicit zero entries	0
nonzero pattern symmetry	83%
numeric value symmetry	36%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	W. Bomhof
editor	T. Davis
date	2000
kind	circuit simulation problem
2D/3D problem?	no

Additional fields	size and type
b	full 80209-by-1
x	full 80209-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	261,650	314,827	271,163
Cholesky flop count	2.8e+06	8.9e+06	2.6e+06
nnz(L+U), no partial pivoting	443,091	549,445	485,963
nnz(V) for QR, upper bound nnz(L) for LU	102,852,606	-	67,172,127
nnz(R) for QR, upper bound nnz(U) for LU	194,371,104	-	132,315,575

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.