Matrix: vanHeukelum/cage14
Description: DNA electrophoresis, 14 monomers in polymer. A. van Heukelum, Utrecht U
| Matrix properties | |
| number of rows | 1,505,785 |
| number of columns | 1,505,785 |
| nonzeros | 27,130,349 |
| structural full rank? | yes |
| structural rank | 1,505,785 |
| # of blocks from dmperm | 1 |
| # strongly connected comp. | 1 |
| entries not in dmperm blocks | 0 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | symmetric |
| numeric value symmetry | 21% |
| type | real |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | A. van Heukelum |
| editor | T. Davis |
| date | 2003 |
| kind | directed weighted graph |
| 2D/3D problem? | no |
| Ordering statistics: | AMD | METIS |
| nnz(chol(P*(A+A'+s*I)*P')) | 2.725464e+11 | 2.611159e+10 |
| Cholesky flop count | 1.1e+17 | 1.9e+15 |
| nnz(L+U), no partial pivoting | 5.450913e+11 | 5.222167e+10 |
| nnz(V) for QR, upper bound nnz(L) for LU | 2.954303e+11 | - |
| nnz(R) for QR, upper bound nnz(U) for LU | 4.616157e+11 | - |
Maintained by Tim Davis, last updated 30-Sep-2008.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.