Matrix: DNVS/m_t1

Description: DNV-Ex 1 : Tubular joint-1999-01-17

DNVS/m_t1 graph
(undirected graph drawing)

DNVS/m_t1

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  • Matrix group: DNVS
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  • download as a MATLAB mat-file, file size: 72 MB. Use UFget(1269) or UFget('DNVS/m_t1') in MATLAB.
  • download in Matrix Market format, file size: 57 MB.
  • download in Rutherford/Boeing format, file size: 47 MB.

    Matrix properties
    number of rows97,578
    number of columns97,578
    nonzeros9,753,570
    structural full rank?yes
    structural rank97,578
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typereal
    structuresymmetric
    Cholesky candidate?yes
    positive definite?yes

    authorC. Damhaug
    editorJ. Koster
    date1999
    kindstructural problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD32,991,606
    Cholesky flop count2.4e+10
    nnz(L+U), no partial pivoting, with AMD65,885,634
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD70,020,585
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD172,049,508

    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.