Matrix properties
number of rows	28,984
number of columns	28,984
nonzeros	285,092
structural full rank?	yes
structural rank	28,984
# of blocks from dmperm	5,439
# strongly connected comp.	5,439
entries not in dmperm blocks	1,548
explicit zero entries	314,078
nonzero pattern symmetry	99%
numeric value symmetry	36%
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 28984-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	6,646,202	4,238,617	4,170,207
Cholesky flop count	4.0e+09	1.9e+09	1.9e+09
nnz(L+U), no partial pivoting	13,263,420	8,448,250	8,312,978
nnz(V) for QR, upper bound nnz(L) for LU	8,104,405	7,323,775	7,195,078
nnz(R) for QR, upper bound nnz(U) for LU	15,049,119	13,655,010	13,430,146

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 314078 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.