Matrix: Sandia/oscil_dcop_23

Description: Sandia/oscil_dcop_23 circuit simulation matrix. Sandia National Lab.

Sandia/oscil_dcop_23 graph Sandia/oscil_dcop_23 graph
(bipartite graph drawing) (graph drawing of A+A')

Sandia/oscil_dcop_23 dmperm of Sandia/oscil_dcop_23
scc of Sandia/oscil_dcop_23

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  • download as a MATLAB mat-file, file size: 11 KB. Use UFget(1134) or UFget('Sandia/oscil_dcop_23') in MATLAB.
  • download in Matrix Market format, file size: 15 KB.
  • download in Rutherford/Boeing format, file size: 14 KB.

    Matrix properties
    number of rows430
    number of columns430
    structural full rank?yes
    structural rank430
    # of blocks from dmperm31
    # strongly connected comp.9
    explicit zero entries0
    nonzero pattern symmetry 98%
    numeric value symmetry 70%
    Cholesky candidate?no
    positive definite?no

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

    Additional fieldssize and type
    bfull 430-by-1


    next: Sandia/oscil_dcop_24 first: Sandia/oscil_dcop_01

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD1,439
    Cholesky flop count5.2e+03
    nnz(L+U), no partial pivoting, with AMD2,448
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD1,830
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD3,504

    SVD-based statistics:
    null space dimension4
    full numerical rank?no
    singular value gap1.73613

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

    Sandia/oscil_dcop_23 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.