Matrix properties
number of rows	17,576
number of columns	17,576
nonzeros	379,761
structural full rank?	yes
structural rank	17,576
# of blocks from dmperm	1,807
# strongly connected comp.	31
entries not in dmperm blocks	24,089
explicit zero entries	2,214
nonzero pattern symmetry	0%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	J. Mallya
editor	T. Davis
date	1994
kind	chemical process simulation problem
2D/3D problem?	no

Additional fields	size and type
b	full 17576-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	33,691,522	22,133,929	793,285
Cholesky flop count	1.7e+11	5.9e+10	6.2e+07
nnz(L+U), no partial pivoting	67,365,468	44,250,282	1,593,083
nnz(V) for QR, upper bound nnz(L) for LU	812,224	941,169	529,527
nnz(R) for QR, upper bound nnz(U) for LU	1,670,800	2,031,768	1,195,300

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 2214 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.