| Matrix properties | |
| number of rows | 10,964 |
| number of columns | 10,964 |
| nonzeros | 233,741 |
| structural full rank? | yes |
| structural rank | 10,964 |
| # of blocks from dmperm | 1,192 |
| # strongly connected comp. | 31 |
| entries not in dmperm blocks | 14,908 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | 1% |
| numeric value symmetry | 0% |
| type | real |
| structure | unsymmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | J. Mallya |
| editor | T. Davis |
| date | 1997 |
| kind | chemical process simulation problem |
| 2D/3D problem? | no |
| Ordering statistics: | AMD | METIS | DMPERM+ |
| nnz(chol(P*(A+A'+s*I)*P')) | 12,494,355 | 8,866,194 | 490,524 |
| Cholesky flop count | 3.7e+10 | 1.5e+10 | 3.6e+07 |
| nnz(L+U), no partial pivoting | 24,977,746 | 17,721,424 | 984,992 |
| nnz(V) for QR, upper bound nnz(L) for LU | 425,483 | 576,861 | 322,597 |
| nnz(R) for QR, upper bound nnz(U) for LU | 963,815 | 1,220,080 | 731,275 |
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.