Matrix properties
number of rows	2,597
number of columns	2,597
nonzeros	76,171
structural full rank?	yes
structural rank	2,597
# of blocks from dmperm	242
# strongly connected comp.	242
explicit zero entries	196
nonzero pattern symmetry	94%
numeric value symmetry	64%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

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

Additional fields	size and type
b	full 2597-by-1
x	full 2597-by-1

Notes:

next: DRIVCAV/cavity11 first: DRIVCAV/cavity10

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	90,335
Cholesky flop count	4.9e+06
nnz(L+U), no partial pivoting, with AMD	178,073
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	142,400
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	463,077

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 196 explicit zero entries.

SVD-based statistics:
norm(A)	13.0527
min(svd(A))	4.41707e-06
cond(A)	2.95507e+06
rank(A)	2,597
sprank(A)-rank(A)	0
null space dimension	0
full numerical rank?	yes

singular values (MAT file):	click here
SVD method used:	s = svd (full (A)) ;
status:	ok

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.