Bindel/ted_AB sparse matrix

Matrix: Bindel/ted_AB

Description: FEM, coupled linear thermoeslasticity eqns on a bar. D Bindel, UC Berkeley

download as a MATLAB mat-file, file size: 2 MB. Use UFget(1407) or UFget('Bindel/ted_AB') in MATLAB.

Bindel/ted_AB

Matrix properties

number of rows 10,605

number of columns 10,605

nonzeros 522,387

structural full rank? yes

structural rank 10,605

# of blocks from dmperm 1

# strongly connected comp. 1

entries not in dmperm blocks 0

explicit zero entries 0

nonzero pattern symmetry 64%

numeric value symmetry 0%

type complex

structure unsymmetric

Cholesky candidate? no

positive definite? no

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

Additional fields size and type

w0 full 1-by-1

Ordering statistics: AMD METIS

nnz(chol(P*(A+A'+s*I)*P')) 510,205 761,596

Cholesky flop count 2.6e+07 6.6e+07

nnz(L+U), no partial pivoting 1,009,805 1,512,587

nnz(V) for QR, upper bound nnz(L) for LU 588,841 765,466

nnz(R) for QR, upper bound nnz(U) for LU 2,028,390 2,998,590

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.

Matrix properties
number of rows	10,605
number of columns	10,605
nonzeros	522,387
structural full rank?	yes
structural rank	10,605
# of blocks from dmperm	1
# strongly connected comp.	1
entries not in dmperm blocks	0
explicit zero entries	0
nonzero pattern symmetry	64%
numeric value symmetry	0%
type	complex
structure	unsymmetric
Cholesky candidate?	no
positive definite?	no

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

Ordering statistics:	AMD	METIS
nnz(chol(P(A+A'+sI)*P'))	510,205	761,596
Cholesky flop count	2.6e+07	6.6e+07
nnz(L+U), no partial pivoting	1,009,805	1,512,587
nnz(V) for QR, upper bound nnz(L) for LU	588,841	765,466
nnz(R) for QR, upper bound nnz(U) for LU	2,028,390	2,998,590