Matrix: Schmid/thermal2
Description: unstructured FEM, steady state thermal problem. Dani Schmid, Univ. Oslo
(undirected graph drawing) |
Matrix properties | |
number of rows | 1,228,045 |
number of columns | 1,228,045 |
nonzeros | 8,580,313 |
structural full rank? | yes |
structural rank | 1,228,045 |
# of blocks from dmperm | 959 |
# strongly connected comp. | 959 |
explicit zero entries | 0 |
nonzero pattern symmetry | symmetric |
numeric value symmetry | symmetric |
type | real |
structure | symmetric |
Cholesky candidate? | yes |
positive definite? | yes |
author | D. Schmid |
editor | T. Davis |
date | 2006 |
kind | thermal problem |
2D/3D problem? | yes |
Additional fields | size and type |
b | full 1228045-by-1 |
Ordering statistics: | result |
nnz(chol(P*(A+A'+s*I)*P')) with AMD | 64,896,306 |
Cholesky flop count | 2.8e+10 |
nnz(L+U), no partial pivoting, with AMD | 128,564,567 |
nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD | 135,142,876 |
nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD | 250,322,077 |
For a description of the statistics displayed above, click here.
Maintained by Tim Davis, last updated 12-Mar-2014.
Matrix pictures by cspy, a MATLAB function in the CSparse package.
Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.