Matrix properties
number of rows	317
number of columns	317
nonzeros	7,311
structural full rank?	yes
structural rank	317
# of blocks from dmperm	82
# strongly connected comp.	82
explicit zero entries	16
nonzero pattern symmetry	80%
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 317-by-1
x	full 317-by-1

Notes:

next: DRIVCAV/cavity04 first: DRIVCAV/cavity01
pattern is the same as DRIVCAV/cavity01       

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	6,120
Cholesky flop count	1.3e+05
nnz(L+U), no partial pivoting, with AMD	11,923
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	6,413
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	16,042

Note that all matrix statistics (except nonzero pattern symmetry) exclude the 16 explicit zero entries.

SVD-based statistics:
norm(A)	47.1332
min(svd(A))	8.05781e-05
cond(A)	584938
rank(A)	317
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.