Matrix properties
number of rows	224,617
number of columns	224,617
nonzeros	12,387,821
structural full rank?	yes
structural rank	224,617
# 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	binary
structure	symmetric
Cholesky candidate?	yes
positive definite?	no

author	C. Damhaug
editor	N. Gould, Y. Hu, J. Scott
date	2004
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	62,591,821	67,771,604
Cholesky flop count	8.3e+10	7.7e+10
nnz(L+U), no partial pivoting	124,959,025	135,318,591
nnz(V) for QR, upper bound nnz(L) for LU	205,534,366	135,328,255
nnz(R) for QR, upper bound nnz(U) for LU	395,948,581	255,874,658

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.