• UF Sparse Matrix Collection
  • Matrix group: MathWorks
  • Click here for a description of the MathWorks group.
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  • Matrix: MathWorks/Pd_rhs
  • Description: Matrix problem X=A\B with many sparse right-hand-sides
  • download as a MATLAB mat-file, file size: 25 KB. Use UFget(1171) or UFget('MathWorks/Pd_rhs') in MATLAB.
  • download in Matrix Market format
  • download in Rutherford/Boeing format

    MathWorks/Pd_rhs

    dmperm of MathWorks/Pd_rhs

    scc of MathWorks/Pd_rhs

    Matrix properties
    number of rows8,081
    number of columns12,406
    nonzeros6,323
    structural full rank?no
    structural rank4,368
    # of blocks from dmperm2,872
    # strongly connected comp.14,549
    explicit zero entries0
    nonzero pattern symmetry 0%
    numeric value symmetry 0%
    typereal
    structurerectangular
    Cholesky candidate?no
    positive definite?no

    authorP. Anderson
    editorT. Davis
    date2002
    kindcounter-example problem
    2D/3D problem?no

    Ordering statistics:AMD METIS
    nnz(V) for QR, upper bound nnz(L) for LU9,829 10,114
    nnz(R) for QR, upper bound nnz(U) for LU8,788 8,788

    Maintained by Tim Davis, last updated 05-Mar-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.