Matrix: Rajat/rajat17

Description: Rajat/rajat17 circuit simulation matrix

Rajat/rajat17 graph Rajat/rajat17 graph
(bipartite graph drawing) (graph drawing of A+A')

Rajat/rajat17 dmperm of Rajat/rajat17
scc of Rajat/rajat17

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 3 MB. Use UFget(1344) or UFget('Rajat/rajat17') in MATLAB.
  • download in Matrix Market format, file size: 4 MB.
  • download in Rutherford/Boeing format, file size: 4 MB.

    Matrix properties
    number of rows94,294
    number of columns94,294
    nonzeros479,246
    structural full rank?yes
    structural rank94,294
    # of blocks from dmperm8,546
    # strongly connected comp.5,229
    explicit zero entries161,913
    nonzero pattern symmetry 99%
    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 AMD1,171,770
    Cholesky flop count3.2e+08
    nnz(L+U), no partial pivoting, with AMD2,249,246
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD181,030,601
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD732,672,007

    Note that all matrix statistics (except nonzero pattern symmetry) exclude the 161913 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.