Matrix properties
number of rows	659,033
number of columns	659,033
nonzeros	5,834,044
structural full rank?	yes
structural rank	659,033
# of blocks from dmperm	29,282
# strongly connected comp.	391
entries not in dmperm blocks	47,054
explicit zero entries	125,238
nonzero pattern symmetry	33%
numeric value symmetry	7%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	R. Melville, D. Long
editor	T. Davis
date	2001
kind	frequency-domain circuit simulation problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	166,850,203	131,066,807	65,323,029
Cholesky flop count	3.4e+11	1.5e+11	1.2e+11
nnz(L+U), no partial pivoting	333,041,373	261,474,581	130,034,079
nnz(V) for QR, upper bound nnz(L) for LU	280,230,008	-	287,475,475
nnz(R) for QR, upper bound nnz(U) for LU	624,841,823	-	648,722,166

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 125238 explicit zero entries.

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.