Matrix: Hamm/bcircuit

Description: Steve Hamm, Motorola. Circuit w/parasitics (Steve.Hamm@motorola.com)

Hamm/bcircuit graph
(undirected graph drawing)

Hamm/bcircuit

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  • Matrix group: Hamm
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  • download as a MATLAB mat-file, file size: 3 MB. Use UFget(541) or UFget('Hamm/bcircuit') in MATLAB.
  • download in Matrix Market format, file size: 3 MB.
  • download in Rutherford/Boeing format, file size: 3 MB.

    Matrix properties
    number of rows68,902
    number of columns68,902
    nonzeros375,558
    structural full rank?yes
    structural rank68,902
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 91%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorS. Hamm
    editorT. Davis
    date2001
    kindcircuit simulation problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 68902-by-1

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD516,620
    Cholesky flop count6.4e+06
    nnz(L+U), no partial pivoting, with AMD964,338
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD1,002,765
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD2,027,090

    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.