Matrix: Rajat/rajat24

Description: Rajat/rajat24 circuit simulation matrix

Rajat/rajat24 graph Rajat/rajat24 graph
(bipartite graph drawing) (graph drawing of A+A')

Rajat/rajat24 dmperm of Rajat/rajat24
scc of Rajat/rajat24

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 9 MB. Use UFget(1373) or UFget('Rajat/rajat24') in MATLAB.
  • download in Matrix Market format, file size: 14 MB.
  • download in Rutherford/Boeing format, file size: 11 MB.

    Matrix properties
    number of rows358,172
    number of columns358,172
    nonzeros1,946,979
    structural full rank?yes
    structural rank358,172
    # of blocks from dmperm3,497
    # strongly connected comp.1,178
    explicit zero entries1,256
    nonzero pattern symmetry 100%
    numeric value symmetry 27%
    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 AMD2,161,997
    Cholesky flop count2.9e+08
    nnz(L+U), no partial pivoting, with AMD3,965,822
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD11,344,815,716
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD23,128,102,261

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 1256 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.