Matrix: Hollinger/mark3jac100

Description: Jacobian from MULTIMOD Mark3, oldstack 100

Hollinger/mark3jac100 graph Hollinger/mark3jac100 graph
(bipartite graph drawing) (graph drawing of A+A')

Hollinger/mark3jac100 dmperm of Hollinger/mark3jac100
scc of Hollinger/mark3jac100

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  • Matrix group: Hollinger
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  • download as a MATLAB mat-file, file size: 2 MB. Use UFget(588) or UFget('Hollinger/mark3jac100') in MATLAB.
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    Matrix properties
    number of rows45,769
    number of columns45,769
    nonzeros268,563
    structural full rank?yes
    structural rank45,769
    # of blocks from dmperm1,601
    # strongly connected comp.1,601
    explicit zero entries16,652
    nonzero pattern symmetry 7%
    numeric value symmetry 1%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorP. Hollinger
    editorT. Davis
    date2001
    kindeconomic problem
    2D/3D problem?no

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD9,319,029
    Cholesky flop count8.2e+09
    nnz(L+U), no partial pivoting, with AMD18,592,289
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD16,036,748
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD29,914,593

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 16652 explicit zero entries.

    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.