| Matrix properties | |
| number of rows | 5,962 |
| number of columns | 5,962 |
| nonzeros | 142,190 |
| structural full rank? | yes |
| structural rank | 5,962 |
| # 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 | 5% |
| type | complex |
| structure | symmetric |
| Cholesky candidate? | no |
| positive definite? | no |
| author | A. Cote |
| editor | T. Davis |
| date | 1997 |
| kind | acoustics problem |
| 2D/3D problem? | yes |
| Ordering statistics: | AMD | METIS |
| nnz(chol(P*(A+A'+s*I)*P')) | 2,017,574 | 1,385,576 |
| Cholesky flop count | 1.3e+09 | 5.6e+08 |
| nnz(L+U), no partial pivoting | 4,029,186 | 2,765,190 |
| nnz(V) for QR, upper bound nnz(L) for LU | 2,739,174 | 2,180,754 |
| nnz(R) for QR, upper bound nnz(U) for LU | 4,640,941 | 3,959,630 |
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.