Matrix: Schenk_AFE/af_1_k101

Description: AutoForm Eng, Zurich. pos. def. sheet metal forming

Schenk_AFE/af_1_k101 graph
(undirected graph drawing)


Schenk_AFE/af_1_k101

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  • Matrix group: Schenk_AFE
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  • download as a MATLAB mat-file, file size: 117 MB. Use UFget(1581) or UFget('Schenk_AFE/af_1_k101') in MATLAB.
  • download in Matrix Market format, file size: 110 MB.
  • download in Rutherford/Boeing format, file size: 97 MB.

    Matrix properties
    number of rows503,625
    number of columns503,625
    nonzeros17,550,675
    structural full rank?yes
    structural rank503,625
    # 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

    authorAutoForm Eng.
    editorO. Schenk
    date2006
    kindstructural problem
    2D/3D problem?yes

    Additional fieldssize and type
    bfull 503625-by-1

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD121,260,075
    Cholesky flop count1.1e+11
    nnz(L+U), no partial pivoting, with AMD242,016,525
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD223,585,850
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD435,336,425

    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.