Matrix properties
number of rows	55,476
number of columns	55,476
nonzeros	759,952
structural full rank?	yes
structural rank	55,476
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	no
positive definite?	no

author	G. Kumfert, A. Pothen
editor	N. Gould, Y. Hu, J. Scott
date	2004
kind	computational fluid dynamics problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	13,936,659	9,608,509
Cholesky flop count	1.2e+10	5.6e+09
nnz(L+U), no partial pivoting	27,817,842	19,161,542
nnz(V) for QR, upper bound nnz(L) for LU	32,503,916	23,582,518
nnz(R) for QR, upper bound nnz(U) for LU	64,894,256	47,014,136

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.