Matrix properties
number of rows	2,597
number of columns	2,597
nonzeros	76,258
structural full rank?	yes
structural rank	2,597
# of blocks from dmperm	242
# strongly connected comp.	242
entries not in dmperm blocks	4,657
explicit zero entries	109
nonzero pattern symmetry	94%
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 2597-by-1
x	full 2597-by-1

Notes:

next: DRIVCAV/cavity15 first: DRIVCAV/cavity10
pattern is the same as DRIVCAV/cavity10       

Ordering statistics:	AMD	METIS	DMPERM+
nnz(chol(P*(A+A'+s*I)*P'))	90,335	93,935	159,696
Cholesky flop count	4.9e+06	4.8e+06	1.6e+07
nnz(L+U), no partial pivoting	178,073	185,273	321,452
nnz(V) for QR, upper bound nnz(L) for LU	143,332	154,498	147,550
nnz(R) for QR, upper bound nnz(U) for LU	463,082	463,145	450,519

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 109 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.