Matrix properties
number of rows	2,597
number of columns	2,597
nonzeros	71,601
structural full rank?	yes
structural rank	2,597
# of blocks from dmperm	242
# strongly connected comp.	242
explicit zero entries	4,766
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/cavity14 first: DRIVCAV/cavity10          
pattern is the same as the transpose of DRIVCAV/cavity10

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	74,053
Cholesky flop count	3.5e+06
nnz(L+U), no partial pivoting, with AMD	145,509
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	129,681
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	408,442

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 4766 explicit zero entries.

SVD-based statistics:
norm(A)	25.0993
min(svd(A))	3.7195e-06
cond(A)	6.74803e+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.