Matrix: Schenk_ISEI/barrier2-11

Description: Olaf Schenk, Univ. Basel: Integrated Systems Eng., San Jose, semiconductor device

Schenk_ISEI/barrier2-11 graph
(undirected graph drawing)

Schenk_ISEI/barrier2-11 dmperm of Schenk_ISEI/barrier2-11
scc of Schenk_ISEI/barrier2-11

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  • Matrix group: Schenk_ISEI
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  • download as a MATLAB mat-file, file size: 20 MB. Use UFget(962) or UFget('Schenk_ISEI/barrier2-11') in MATLAB.
  • download in Matrix Market format, file size: 23 MB.
  • download in Rutherford/Boeing format, file size: 20 MB.

    Matrix properties
    number of rows115,625
    number of columns115,625
    structural full rank?yes
    structural rank115,625
    # of blocks from dmperm436
    # strongly connected comp.436
    explicit zero entries1,738,798
    nonzero pattern symmetrysymmetric
    numeric value symmetry 20%
    Cholesky candidate?no
    positive definite?no

    authorIntegrated Sys. Eng.
    editorO. Schenk
    kindsubsequent semiconductor device problem
    2D/3D problem?yes

    Additional fieldssize and type
    bfull 115625-by-1


    next: Schenk_ISEI/barrier2-12 first: Schenk_ISEI/barrier2-9

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD138,558,741
    Cholesky flop count5.2e+11
    nnz(L+U), no partial pivoting, with AMD277,001,857
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD768,642,652
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD1,174,525,388

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1738798 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.