Matrix properties
number of rows	82,654
number of columns	82,654
nonzeros	574,458
structural full rank?	yes
structural rank	82,654
# of blocks from dmperm	249
# strongly connected comp.	249
explicit zero entries	0
nonzero pattern symmetry	symmetric
numeric value symmetry	symmetric
type	real
structure	symmetric
Cholesky candidate?	yes
positive definite?	yes

author	D. Schmid
editor	T. Davis
date	2006
kind	thermal problem
2D/3D problem?	yes

Additional fields	size and type
b	full 82654-by-1

Ordering statistics:	result
nnz(chol(P*(A+A'+s*I)*P')) with AMD	2,659,592
Cholesky flop count	2.9e+08
nnz(L+U), no partial pivoting, with AMD	5,236,530
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD	5,071,586
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD	9,519,210

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.