Matrix properties
number of rows	70,656
number of columns	70,656
nonzeros	1,825,580
structural full rank?	yes
structural rank	70,656
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	2,784
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	E. Rothberg
editor	T. Davis
date	1997
kind	computational fluid dynamics problem
2D/3D problem?	yes

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	35,877,440	19,831,820
Cholesky flop count	4.1e+10	1.2e+10
nnz(L+U), no partial pivoting	71,684,224	39,592,984
nnz(V) for QR, upper bound nnz(L) for LU	57,045,725	33,992,507
nnz(R) for QR, upper bound nnz(U) for LU	103,569,465	65,218,867

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 2784 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.