Matrix: Rajat/rajat30

Description: Rajat/rajat30 circuit simulation matrix

Rajat/rajat30 graph Rajat/rajat30 graph
(bipartite graph drawing) (graph drawing of A+A')

Rajat/rajat30 dmperm of Rajat/rajat30
scc of Rajat/rajat30

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 18 MB. Use UFget(1397) or UFget('Rajat/rajat30') in MATLAB.
  • download in Matrix Market format, file size: 34 MB.
  • download in Rutherford/Boeing format, file size: 23 MB.

    Matrix properties
    number of rows643,994
    number of columns643,994
    nonzeros6,175,244
    structural full rank?yes
    structural rank643,994
    # of blocks from dmperm11,756
    # strongly connected comp.1,434
    explicit zero entries133
    nonzero pattern symmetry 99%
    numeric value symmetry 1%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorRajat
    editorT. Davis
    date2006
    kindcircuit simulation problem
    2D/3D problem?no

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD10,173,716
    Cholesky flop count2.8e+09
    nnz(L+U), no partial pivoting, with AMD19,703,438
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD73,070,111,399
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD182,389,295,619

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 133 explicit zero entries.

    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.