| Matrix properties | |
| number of rows | 68,902 |
| number of columns | 68,902 |
| nonzeros | 375,558 |
| structural full rank? | yes |
| structural rank | 68,902 |
| # 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 | 91% |
| type | real |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | S. Hamm |
| editor | T. Davis |
| date | 2001 |
| kind | circuit simulation problem |
| 2D/3D problem? | no |
| Additional fields | size and type |
| b | full 68902-by-1 |
| Ordering statistics: | AMD | METIS |
| nnz(chol(P*(A+A'+s*I)*P')) | 516,620 | 607,950 |
| Cholesky flop count | 6.4e+06 | 1.0e+07 |
| nnz(L+U), no partial pivoting | 964,338 | 1,146,998 |
| nnz(V) for QR, upper bound nnz(L) for LU | 1,002,765 | 1,117,897 |
| nnz(R) for QR, upper bound nnz(U) for LU | 2,027,090 | 2,183,731 |
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.