Matrix: Rajat/rajat29

Description: Rajat/rajat29 circuit simulation matrix

Rajat/rajat29 graph Rajat/rajat29 graph
(bipartite graph drawing) (graph drawing of A+A')

Rajat/rajat29 dmperm of Rajat/rajat29
scc of Rajat/rajat29

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 10 MB. Use UFget(1396) or UFget('Rajat/rajat29') in MATLAB.
  • download in Matrix Market format, file size: 20 MB.
  • download in Rutherford/Boeing format, file size: 14 MB.

    Matrix properties
    number of rows643,994
    number of columns643,994
    nonzeros3,760,246
    structural full rank?yes
    structural rank643,994
    # of blocks from dmperm14,307
    # strongly connected comp.4,512
    explicit zero entries1,106,024
    nonzero pattern symmetry 69%
    numeric value symmetry 69%
    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 AMD2,675,763
    Cholesky flop count2.8e+07
    nnz(L+U), no partial pivoting, with AMD4,707,532
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD3,522,509,259
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD176,376,715,299

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1106024 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.