Matrix: FIDAP/ex10hs

Description: TEST MATRIX FROM FIDAP: EX10hs.MAT

FIDAP/ex10hs graph
(undirected graph drawing)


FIDAP/ex10hs dmperm of FIDAP/ex10hs

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  • Matrix group: FIDAP
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  • download as a MATLAB mat-file, file size: 325 KB. Use UFget(408) or UFget('FIDAP/ex10hs') in MATLAB.
  • download in Matrix Market format, file size: 285 KB.
  • download in Rutherford/Boeing format, file size: 241 KB.

    Matrix properties
    number of rows2,548
    number of columns2,548
    nonzeros57,308
    structural full rank?yes
    structural rank2,548
    # of blocks from dmperm2
    # strongly connected comp.2
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typereal
    structuresymmetric
    Cholesky candidate?yes
    positive definite?yes

    authorA. Baggag, Y. Saad
    editorA. Baggag, Y. Saad
    date1994
    kindcomputational fluid dynamics problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD53,998
    Cholesky flop count1.4e+06
    nnz(L+U), no partial pivoting, with AMD105,448
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD67,519
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD181,795

    SVD-based statistics:
    norm(A)5.26792e+07
    min(svd(A))9.60545e-05
    cond(A)5.4843e+11
    rank(A)2,548
    sprank(A)-rank(A)0
    null space dimension0
    full numerical rank?yes

    singular values (MAT file):click here
    SVD method used:s = svd (full (A)) ;
    status:ok

    FIDAP/ex10hs svd

    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.