Matrix properties
number of rows	17,576
number of columns	17,576
nonzeros	381,975
structural full rank?	yes
structural rank	17,576
# of blocks from dmperm	1,798
# strongly connected comp.	31
entries not in dmperm blocks	24,020
explicit zero entries	0
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	1997
kind	chemical process simulation problem
2D/3D problem?	no

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	33,835,914	23,409,455	810,026
Cholesky flop count	1.7e+11	6.7e+10	6.2e+07
nnz(L+U), no partial pivoting	67,654,252	46,801,334	1,626,496
nnz(V) for QR, upper bound nnz(L) for LU	802,005	983,731	529,452
nnz(R) for QR, upper bound nnz(U) for LU	1,644,883	2,079,684	1,194,776

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.