Matrix properties
number of rows	35,152
number of columns	35,152
nonzeros	746,972
structural full rank?	yes
structural rank	35,152
# of blocks from dmperm	7,985
# strongly connected comp.	61
entries not in dmperm blocks	379,337
explicit zero entries	17,042
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 35152-by-1

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	72,406,448	44,958,881	946,954
Cholesky flop count	3.8e+11	1.2e+11	6.7e+07
nnz(L+U), no partial pivoting	144,777,744	89,882,610	2,238,093
nnz(V) for QR, upper bound nnz(L) for LU	1,523,434	1,891,068	650,530
nnz(R) for QR, upper bound nnz(U) for LU	3,411,710	4,249,299	1,773,033

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 17042 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.