Matrix properties
number of rows	525,825
number of columns	525,825
nonzeros	3,674,625
structural full rank?	yes
structural rank	525,825
# of blocks from dmperm	1
# strongly connected comp.	1
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	P. Wissgott
editor	T. Davis
date	2007
kind	computational fluid dynamics problem
2D/3D problem?	yes

Additional fields	size and type
b	full 525825-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	36,132,647
Cholesky flop count	1.7e+10
nnz(L+U), no partial pivoting, with AMD	71,739,469
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	59,085,761
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	108,497,358

Maintained by Tim Davis, last updated 01-Apr-2011.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.