Matrix properties
number of rows	52,804
number of columns	52,804
nonzeros	10,614,210
structural full rank?	yes
structural rank	52,804
# 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	S. Mayer
editor	J. Koster
date	2004
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	38,952,604
Cholesky flop count	4.7e+10
nnz(L+U), no partial pivoting, with AMD	77,852,404
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	72,849,964
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	197,345,017

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.