Matrix: Sandia/fpga_trans_01

Description: Sandia/fpga_trans_01 circuit simulation matrix. Sandia National Lab.

Sandia/fpga_trans_01 graph
(undirected graph drawing)


Sandia/fpga_trans_01 dmperm of Sandia/fpga_trans_01

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  • Matrix group: Sandia
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  • download as a MATLAB mat-file, file size: 36 KB. Use UFget(1106) or UFget('Sandia/fpga_trans_01') in MATLAB.
  • download in Matrix Market format, file size: 55 KB.
  • download in Rutherford/Boeing format, file size: 39 KB.

    Matrix properties
    number of rows1,220
    number of columns1,220
    nonzeros7,382
    structural full rank?yes
    structural rank1,220
    # of blocks from dmperm133
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetry 21%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorR. Hoekstra
    editorT. Davis
    date2003
    kindcircuit simulation problem sequence
    2D/3D problem?no

    Additional fieldssize and type
    bfull 1220-by-1

    Notes:

    next: Sandia/fpga_trans_02 first: Sandia/fpga_trans_01
    

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD5,541
    Cholesky flop count2.8e+04
    nnz(L+U), no partial pivoting, with AMD9,862
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD14,484
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD39,947

    SVD-based statistics:
    norm(A)2.8877
    min(svd(A))0.000236421
    cond(A)12214.3
    rank(A)1,220
    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

    Sandia/fpga_trans_01 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.