Matrix: Wang/wang4

Description: MOSFET, doping 1.0e19 n-region, 1.0e15 p-region, uniform 30-30-30 mesh

Wang/wang4 graph
(undirected graph drawing)


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  • Matrix group: Wang
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  • download as a MATLAB mat-file, file size: 1 MB. Use UFget(833) or UFget('Wang/wang4') in MATLAB.
  • download in Matrix Market format, file size: 961 KB.
  • download in Rutherford/Boeing format, file size: 849 KB.

    Matrix properties
    number of rows26,068
    number of columns26,068
    structural full rank?yes
    structural rank26,068
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 5%
    Cholesky candidate?no
    positive definite?no

    authorS. Wang
    editorT. Davis
    kindsemiconductor device problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD5,281,946
    Cholesky flop count4.5e+09
    nnz(L+U), no partial pivoting, with AMD10,537,824
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD13,386,292
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD22,732,723

    SVD-based statistics:
    null space dimension0
    full numerical rank?yes

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

    Wang/wang4 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.