Matrix properties
number of rows	30,412
number of columns	30,412
nonzeros	1,793,881
structural full rank?	yes
structural rank	30,412
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	97%
numeric value symmetry	72%
type	real
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

author	J. Marchal
editor	J. Koster
date	2005
kind	computational fluid dynamics problem
2D/3D problem?	yes

Additional fields	size and type
b	full 30412-by-1

Notes:

from Parasol, http://www.parallab.uib.no/projects/parasol/data

Ordering statistics:	AMD	METIS
nnz(chol(P*(A+A'+s*I)*P'))	14,654,006	7,723,577
Cholesky flop count	1.7e+10	3.9e+09
nnz(L+U), no partial pivoting	29,277,600	15,416,742
nnz(V) for QR, upper bound nnz(L) for LU	28,409,578	14,597,147
nnz(R) for QR, upper bound nnz(U) for LU	55,548,781	33,120,515

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.