Matrix properties
number of rows	85,623
number of columns	85,623
nonzeros	2,374,949
structural full rank?	yes
structural rank	85,623
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	COMSOL
editor	T. Davis
date	2003
kind	computational fluid dynamics problem
2D/3D problem?	yes

Additional fields	size and type
b	full 85623-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	57,304,935
Cholesky flop count	1.3e+11
nnz(L+U), no partial pivoting, with AMD	114,524,247
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	112,727,554
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	270,263,178

For a description of the statistics displayed above, click here.

Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.