Matrix: Sandia/ASIC_100k

Description: Sandia, Xyce circuit simulation matrix (stripped)

Sandia/ASIC_100k graph
(undirected graph drawing)

Sandia/ASIC_100k dmperm of Sandia/ASIC_100k

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  • Matrix group: Sandia
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  • download as a MATLAB mat-file, file size: 2 MB. Use UFget(1415) or UFget('Sandia/ASIC_100k') in MATLAB.
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    Matrix properties
    number of rows99,340
    number of columns99,340
    nonzeros940,621
    structural full rank?yes
    structural rank99,340
    # of blocks from dmperm399
    # strongly connected comp.1
    explicit zero entries13,542
    nonzero pattern symmetrysymmetric
    numeric value symmetry 0%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorR. Hoekstra
    editorT. Davis
    date2006
    kindcircuit simulation problem
    2D/3D problem?no

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD2,027,263
    Cholesky flop count6.2e+08
    nnz(L+U), no partial pivoting, with AMD3,955,186
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD2,024,613,530
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD4,926,992,050

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 13542 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.