Matrix properties
number of rows	54,019
number of columns	54,019
nonzeros	486,129
structural full rank?	yes
structural rank	54,019
# of blocks from dmperm	7,157
# strongly connected comp.	7,157
entries not in dmperm blocks	1,042
explicit zero entries	510,285
nonzero pattern symmetry	100%
numeric value symmetry	19%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	IBM
editor	O. Schenk
date	2003
kind	semiconductor device problem
2D/3D problem?	yes

Additional fields	size and type
b	full 54019-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	4,228,992	3,077,518	3,104,269
Cholesky flop count	9.9e+08	5.1e+08	5.1e+08
nnz(L+U), no partial pivoting	8,403,965	6,101,017	6,155,561
nnz(V) for QR, upper bound nnz(L) for LU	5,284,916	4,944,538	5,059,364
nnz(R) for QR, upper bound nnz(U) for LU	9,900,924	9,422,584	9,612,365

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 510285 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.