Matrix properties
number of rows	113,076
number of columns	113,076
nonzeros	2,129,496
structural full rank?	yes
structural rank	113,076
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	1,675,572
nonzero pattern symmetry	symmetric
numeric value symmetry	20%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	Integrated Sys. Eng.
editor	O. Schenk
date	2003
kind	semiconductor device problem sequence
2D/3D problem?	yes

Additional fields	size and type
b	full 113076-by-1

Notes:

next: Schenk_ISEI/barrier2-2 first: Schenk_ISEI/barrier2-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	131,339,665
Cholesky flop count	4.6e+11
nnz(L+U), no partial pivoting, with AMD	262,566,254
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	763,064,356
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	1,134,738,682

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1675572 explicit zero entries.

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.