Matrix properties
number of rows	3,008
number of columns	3,008
nonzeros	20,715
structural full rank?	yes
structural rank	3,008
# of blocks from dmperm	1,273
# strongly connected comp.	1
entries not in dmperm blocks	2,080
explicit zero entries	6,861
nonzero pattern symmetry	1%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	Bayer
editor	F. Grund
date	1997
kind	chemical process simulation problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	608,569	476,495	73,674
Cholesky flop count	3.8e+08	1.8e+08	6.8e+06
nnz(L+U), no partial pivoting	1,214,130	949,982	146,420
nnz(V) for QR, upper bound nnz(L) for LU	109,690	104,154	67,253
nnz(R) for QR, upper bound nnz(U) for LU	193,621	205,458	136,424

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 6861 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.