Matrix: Rajat/rajat23

Description: Rajat/rajat23 circuit simulation matrix

Rajat/rajat23 graph Rajat/rajat23 graph
(bipartite graph drawing) (graph drawing of A+A')

Rajat/rajat23 dmperm of Rajat/rajat23
scc of Rajat/rajat23

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 3 MB. Use UFget(1372) or UFget('Rajat/rajat23') in MATLAB.
  • download in Matrix Market format, file size: 4 MB.
  • download in Rutherford/Boeing format, file size: 4 MB.

    Matrix properties
    number of rows110,355
    number of columns110,355
    nonzeros555,441
    structural full rank?yes
    structural rank110,355
    # of blocks from dmperm6,052
    # strongly connected comp.1,410
    explicit zero entries1,497
    nonzero pattern symmetry 99%
    numeric value symmetry 33%
    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 AMD455,569
    Cholesky flop count2.8e+06
    nnz(L+U), no partial pivoting, with AMD800,783
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD18,813,404
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD57,663,673

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1497 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.