Matrix properties
number of rows	114,919
number of columns	114,919
nonzeros	3,303,553
structural full rank?	yes
structural rank	114,919
# of blocks from dmperm	49
# strongly connected comp.	49
explicit zero entries	3,349,846
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	C. Damhaug
editor	J. Koster
date	1999
kind	structural problem
2D/3D problem?	yes

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	48,416,528
Cholesky flop count	9.3e+10
nnz(L+U), no partial pivoting, with AMD	96,718,137
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	124,693,327
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	235,112,223

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 3349846 explicit zero entries.

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.