Chen/pkustk14 graph

Matrix: Chen/pkustk14

Description: PKU SYMMETRIC STIFFNESS, TALL BUILDING

  • UF Sparse Matrix Collection
  • Matrix group: Chen
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  • download as a MATLAB mat-file, file size: 6 MB. Use UFget(860) or UFget('Chen/pkustk14') in MATLAB.
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    Chen/pkustk14

    Matrix properties
    number of rows151,926
    number of columns151,926
    nonzeros14,836,504
    structural full rank?yes
    structural rank151,926
    # of blocks from dmperm1
    # strongly connected comp.1
    entries not in dmperm blocks0
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typebinary
    structuresymmetric
    Cholesky candidate?yes
    positive definite?no

    authorP. Chen
    editorT. Davis
    date2002
    kindstructural problem
    2D/3D problem?yes

    Ordering statistics:AMD METIS
    nnz(chol(P*(A+A'+s*I)*P'))116,385,678 106,383,326
    Cholesky flop count1.6e+11 1.5e+11
    nnz(L+U), no partial pivoting232,619,430 212,614,726
    nnz(V) for QR, upper bound nnz(L) for LU261,946,841 184,995,530
    nnz(R) for QR, upper bound nnz(U) for LU528,246,439 372,286,574

    Maintained by Tim Davis, last updated 30-Sep-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.