GHS_indef/bloweybl
MATRIX FOR WHICH EARLY VERSION OF MA57 FAILS
| Name |
bloweybl |
| Group |
GHS_indef |
| Matrix ID |
1424 |
|
Num Rows
|
30,003 |
|
Num Cols
|
30,003 |
|
Nonzeros
|
109,999 |
|
Pattern Entries
|
120,000 |
|
Kind
|
Materials Problem |
|
Symmetric
|
Yes |
|
Date
|
1992 |
|
Author
|
J. Blowey |
|
Editor
|
N. Gould |
| Structural Rank |
30,002 |
| Structural Rank Full |
false |
|
Num Dmperm Blocks
|
20,003 |
|
Strongly Connect Components
|
2 |
|
Num Explicit Zeros
|
10,001 |
|
Pattern Symmetry
|
100% |
|
Numeric Symmetry
|
100% |
|
Cholesky Candidate
|
no |
|
Positive Definite
|
no |
|
Type
|
real |
| SVD Statistics |
| Matrix Norm |
1.000075e+02 |
| Minimum Singular Value |
4.331520e-19 |
| Condition Number |
2.308832e+20
|
| Rank |
20,028 |
| sprank(A)-rank(A) |
9,974 |
| Null Space Dimension |
9,975 |
| Full Numerical Rank? |
no |
| Download Singular Values |
MATLAB
|
