Matrix: Wissgott/parabolic_fem

Description: Parabolic FEM, diffusion-convection reaction, constant homogenous diffusion

Wissgott/parabolic_fem graph
(undirected graph drawing)


Wissgott/parabolic_fem

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  • Matrix group: Wissgott
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  • download as a MATLAB mat-file, file size: 13 MB. Use UFget(1853) or UFget('Wissgott/parabolic_fem') in MATLAB.
  • download in Matrix Market format, file size: 13 MB.
  • download in Rutherford/Boeing format, file size: 11 MB.

    Matrix properties
    number of rows525,825
    number of columns525,825
    nonzeros3,674,625
    structural full rank?yes
    structural rank525,825
    # 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

    authorP. Wissgott
    editorT. Davis
    date2007
    kindcomputational fluid dynamics problem
    2D/3D problem?yes

    Additional fieldssize and type
    bfull 525825-by-1

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD36,132,647
    Cholesky flop count1.7e+10
    nnz(L+U), no partial pivoting, with AMD71,739,469
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD59,085,761
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD108,497,358

    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.