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
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/cavity13 first: DRIVCAV/cavity10
pattern is the same as 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	143,332
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	463,082

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

SVD-based statistics:
norm(A)	18.9064
min(svd(A))	4.39723e-06
cond(A)	4.29962e+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.