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

    Maintained by Tim Davis, last updated 01-Apr-2011.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.