Matrix: INPRO/msdoor

Description: medium size door

INPRO/msdoor graph
(undirected graph drawing)

INPRO/msdoor dmperm of INPRO/msdoor

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  • Matrix group: INPRO
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  • download as a MATLAB mat-file, file size: 139 MB. Use UFget(1644) or UFget('INPRO/msdoor') in MATLAB.
  • download in Matrix Market format, file size: 107 MB.
  • download in Rutherford/Boeing format, file size: 86 MB.

    Matrix properties
    number of rows415,863
    number of columns415,863
    nonzeros19,173,163
    structural full rank?yes
    structural rank415,863
    # of blocks from dmperm11,079
    # strongly connected comp.11,079
    explicit zero entries1,067,772
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typereal
    structuresymmetric
    Cholesky candidate?yes
    positive definite?yes

    authorJ. Weiher
    editorJ. Koster
    date2005
    kindstructural problem
    2D/3D problem?yes

    Notes:

    from Parasol, http://www.parallab.uib.no/projects/parasol/data

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD49,171,026
    Cholesky flop count1.9e+10
    nnz(L+U), no partial pivoting, with AMD97,926,189
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD180,499,633
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD375,295,286

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1067772 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.