Matrix properties
number of rows	10,672
number of columns	10,672
nonzeros	228,395
structural full rank?	yes
structural rank	10,672
# of blocks from dmperm	912
# strongly connected comp.	31
entries not in dmperm blocks	13,880
explicit zero entries	4,238
nonzero pattern symmetry	1%
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 10672-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	12,704,951	9,306,642	522,186
Cholesky flop count	3.9e+10	1.6e+10	4.1e+07
nnz(L+U), no partial pivoting	25,399,230	18,602,612	1,047,580
nnz(V) for QR, upper bound nnz(L) for LU	352,322	522,097	325,409
nnz(R) for QR, upper bound nnz(U) for LU	853,038	1,120,444	732,497

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 4238 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.