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
entries not in dmperm blocks	0
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:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	48,416,528	36,927,928	37,036,958
Cholesky flop count	9.3e+10	4.5e+10	4.5e+10
nnz(L+U), no partial pivoting	96,718,137	73,740,937	73,958,997
nnz(V) for QR, upper bound nnz(L) for LU	124,693,327	76,954,198	76,899,183
nnz(R) for QR, upper bound nnz(U) for LU	235,112,223	143,903,201	143,754,590

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

Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.