Matrix: Sandia/mult_dcop_03

Description: Sandia/mult_dcop_03 circuit simulation matrix. Sandia National Lab.

Sandia/mult_dcop_03 graph Sandia/mult_dcop_03 graph
(bipartite graph drawing) (graph drawing of A+A')

Sandia/mult_dcop_03 dmperm of Sandia/mult_dcop_03
scc of Sandia/mult_dcop_03

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  • download as a MATLAB mat-file, file size: 1 MB. Use UFget(1111) or UFget('Sandia/mult_dcop_03') in MATLAB.
  • download in Matrix Market format, file size: 2 MB.
  • download in Rutherford/Boeing format, file size: 1 MB.

    Matrix properties
    number of rows25,187
    number of columns25,187
    structural full rank?yes
    structural rank25,187
    # of blocks from dmperm7,447
    # strongly connected comp.107
    explicit zero entries0
    nonzero pattern symmetry 61%
    numeric value symmetry 1%
    Cholesky candidate?no
    positive definite?no

    authorR. Hoekstra
    editorT. Davis
    kindsubsequent circuit simulation problem
    2D/3D problem?no

    Additional fieldssize and type
    bfull 25187-by-1


    next: - first: Sandia/mult_dcop_01

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD605,623
    Cholesky flop count1.1e+08
    nnz(L+U), no partial pivoting, with AMD1,186,059
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD48,704,190
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD283,235,909

    SVD-based statistics:
    null space dimension6,916
    full numerical rank?no
    singular value gap5.51581

    singular values (MAT file):click here
    SVD method used:s = svd (full (A))

    Sandia/mult_dcop_03 svd

    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.