Matrix: Rajat/rajat15

Description: Rajat/rajat15 circuit simulation matrix

Rajat/rajat15 graph
(undirected graph drawing)


Rajat/rajat15 dmperm of Rajat/rajat15

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  • Matrix group: Rajat
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  • download as a MATLAB mat-file, file size: 3 MB. Use UFget(1316) or UFget('Rajat/rajat15') in MATLAB.
  • download in Matrix Market format, file size: 3 MB.
  • download in Rutherford/Boeing format, file size: 2 MB.

    Matrix properties
    number of rows37,261
    number of columns37,261
    nonzeros443,573
    structural full rank?yes
    structural rank37,261
    # of blocks from dmperm19
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 94%
    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 AMD809,507
    Cholesky flop count6.6e+07
    nnz(L+U), no partial pivoting, with AMD1,581,753
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD52,562,877
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD85,820,610

    SVD-based statistics:
    norm(A)326847
    min(svd(A))0.000710359
    cond(A)4.60115e+08
    rank(A)37,261
    sprank(A)-rank(A)0
    null space dimension0
    full numerical rank?yes

    singular values (MAT file):click here
    SVD method used:s = svd (full (A))
    status:ok

    Rajat/rajat15 svd

    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.