| Matrix properties | |
| number of rows | 10,605 |
| number of columns | 10,605 |
| nonzeros | 424,587 |
| structural full rank? | yes |
| structural rank | 10,605 |
| # of blocks from dmperm | 4,244 |
| # strongly connected comp. | 1 |
| entries not in dmperm blocks | 186,468 |
| explicit zero entries | 0 |
| nonzero pattern symmetry | 57% |
| numeric value symmetry | 11% |
| type | real |
| 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 | DMPERM+ |
| nnz(chol(P*(A+A'+s*I)*P')) | 510,205 | 697,902 | 137,734 |
| Cholesky flop count | 2.6e+07 | 5.3e+07 | 3.1e+06 |
| nnz(L+U), no partial pivoting | 1,009,805 | 1,385,199 | 451,331 |
| nnz(V) for QR, upper bound nnz(L) for LU | 4,343,971 | 630,554 | 178,704 |
| nnz(R) for QR, upper bound nnz(U) for LU | 5,651,891 | 2,828,952 | 598,509 |
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.