Matrix: Rajat/rajat18

Description: Rajat/rajat18 circuit simulation matrix

Rajat/rajat18 graph Rajat/rajat18 graph
(bipartite graph drawing) (graph drawing of A+A')

Rajat/rajat18 dmperm of Rajat/rajat18
scc of Rajat/rajat18

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 2 MB. Use UFget(1345) or UFget('Rajat/rajat18') in MATLAB.
  • download in Matrix Market format, file size: 3 MB.
  • download in Rutherford/Boeing format, file size: 2 MB.

    Matrix properties
    number of rows94,294
    number of columns94,294
    nonzeros479,151
    structural full rank?yes
    structural rank94,294
    # of blocks from dmperm8,549
    # strongly connected comp.5,232
    explicit zero entries5,992
    nonzero pattern symmetry 63%
    numeric value symmetry 28%
    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 AMD1,171,678
    Cholesky flop count3.2e+08
    nnz(L+U), no partial pivoting, with AMD2,249,062
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD181,212,515
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD732,940,235

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 5992 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.