Chen/pkustk07 graph

Matrix: Chen/pkustk07

Description: PKU SYMMETRIC STIFFNESS, 10*10*10 MESH (21 NODES ELEMENTS)

  • UF Sparse Matrix Collection
  • Matrix group: Chen
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  • download as a MATLAB mat-file, file size: 1 MB. Use UFget(853) or UFget('Chen/pkustk07') in MATLAB.
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    Chen/pkustk07

    Matrix properties
    number of rows16,860
    number of columns16,860
    nonzeros2,418,804
    structural full rank?yes
    structural rank16,860
    # 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'))9,848,031 7,619,883
    Cholesky flop count1.1e+10 5.6e+09
    nnz(L+U), no partial pivoting19,679,202 15,222,906
    nnz(V) for QR, upper bound nnz(L) for LU16,994,709 13,291,494
    nnz(R) for QR, upper bound nnz(U) for LU43,803,294 31,458,372

    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.