Matrix properties
number of rows	4,562
number of columns	4,562
nonzeros	131,735
structural full rank?	yes
structural rank	4,562
# of blocks from dmperm	322
# strongly connected comp.	322
entries not in dmperm blocks	0
explicit zero entries	6,452
nonzero pattern symmetry	95%
numeric value symmetry	0%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	A. Chapman
editor	A. Baggag, Y. Saad
date	1996
kind	subsequent computational fluid dynamics problem
2D/3D problem?	yes

Additional fields	size and type
b	full 4562-by-1
x	full 4562-by-1

Notes:

next: DRIVCAV/cavity24 first: DRIVCAV/cavity16          
pattern is the same as the transpose of DRIVCAV/cavity16

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	153,446	159,392	348,174
Cholesky flop count	9.1e+06	9.2e+06	4.6e+07
nnz(L+U), no partial pivoting	302,330	314,222	691,786
nnz(V) for QR, upper bound nnz(L) for LU	291,165	338,638	343,917
nnz(R) for QR, upper bound nnz(U) for LU	943,772	1,037,756	1,023,201

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 6452 explicit zero entries.

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.