Matrix: Ronis/xenon2

Description: Complex zeolite,sodalite crystals. D Ronis ronis@onsager.chem.mcgill.ca

Ronis/xenon2 graph
(undirected graph drawing)

Ronis/xenon2 dmperm of Ronis/xenon2

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  • Matrix group: Ronis
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  • download as a MATLAB mat-file, file size: 17 MB. Use UFget(802) or UFget('Ronis/xenon2') in MATLAB.
  • download in Matrix Market format, file size: 30 MB.
  • download in Rutherford/Boeing format, file size: 23 MB.

    Matrix properties
    number of rows157,464
    number of columns157,464
    nonzeros3,866,688
    structural full rank?yes
    structural rank157,464
    # of blocks from dmperm55
    # strongly connected comp.55
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 78%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorD. Ronis
    editorT. Davis
    date2001
    kindmaterials problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD63,194,853
    Cholesky flop count8.5e+10
    nnz(L+U), no partial pivoting, with AMD126,232,242
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD184,112,505
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD339,714,276

    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.