Matrix properties
number of rows	11,341
number of columns	11,341
nonzeros	97,193
structural full rank?	yes
structural rank	11,341
# of blocks from dmperm	49
# strongly connected comp.	1
entries not in dmperm blocks	5,316
explicit zero entries	1,330
nonzero pattern symmetry	symmetric
numeric value symmetry	78%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	E. Acar
editor	T. Davis
date	2004
kind	circuit simulation problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	191,898	225,661	183,777
Cholesky flop count	1.3e+07	1.7e+07	1.2e+07
nnz(L+U), no partial pivoting	372,455	439,981	361,529
nnz(V) for QR, upper bound nnz(L) for LU	3,381,380	3,030,822	660,273
nnz(R) for QR, upper bound nnz(U) for LU	6,307,918	6,997,891	1,242,750

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1330 explicit zero entries.

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.