Matrix: PARSEC/Ga3As3H12

Description: Real-space pseudopotential method. Zhou, Saad, Tiago, Chelikowsky, Univ MN

PARSEC/Ga3As3H12 graph
(undirected graph drawing)

PARSEC/Ga3As3H12

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  • Matrix group: PARSEC
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  • download as a MATLAB mat-file, file size: 36 MB. Use UFget(1352) or UFget('PARSEC/Ga3As3H12') in MATLAB.
  • download in Matrix Market format, file size: 29 MB.
  • download in Rutherford/Boeing format, file size: 22 MB.

    Matrix properties
    number of rows61,349
    number of columns61,349
    nonzeros5,970,947
    structural full rank?yes
    structural rank61,349
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typereal
    structuresymmetric
    Cholesky candidate?yes
    positive definite?no

    authorY. Zhou, Y. Saad, M. Tiago, J. Chelikowsky
    editorT. Davis
    date2005
    kindtheoretical/quantum chemistry problem
    2D/3D problem?no

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD596,645,077
    Cholesky flop count9.2e+12
    nnz(L+U), no partial pivoting, with AMD1,193,228,805
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD592,407,788
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD966,731,804

    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.