Matrix properties
number of rows	51,448
number of columns	51,448
nonzeros	537,038
structural full rank?	yes
structural rank	51,448
# of blocks from dmperm	6,627
# strongly connected comp.	6,627
entries not in dmperm blocks	9,252
explicit zero entries	519,572
nonzero pattern symmetry	99%
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 51448-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	18,440,767	13,269,125	13,072,887
Cholesky flop count	2.1e+10	1.2e+10	1.2e+10
nnz(L+U), no partial pivoting	36,830,086	26,486,802	26,103,578
nnz(V) for QR, upper bound nnz(L) for LU	39,167,389	25,242,708	23,835,150
nnz(R) for QR, upper bound nnz(U) for LU	75,227,823	46,541,580	43,995,345

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 519572 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.