Matrix: Freescale/circuit5M

Description: Large circuit from K. Gullapalli, Freescale Semiconductor

Freescale/circuit5M graph Freescale/circuit5M graph
(bipartite graph drawing) (graph drawing of A+A')

Freescale/circuit5M dmperm of Freescale/circuit5M
scc of Freescale/circuit5M

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: Freescale
  • Click here for a description of the Freescale group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups
  • download as a MATLAB mat-file, file size: 69 MB. Use UFget(2276) or UFget('Freescale/circuit5M') in MATLAB.
  • download in Matrix Market format, file size: 175 MB.
  • download in Rutherford/Boeing format, file size: 98 MB.

    Matrix properties
    number of rows5,558,326
    number of columns5,558,326
    nonzeros59,524,291
    structural full rank?yes
    structural rank5,558,326
    # of blocks from dmperm1,094
    # strongly connected comp.647
    explicit zero entries0
    nonzero pattern symmetry 100%
    numeric value symmetry 42%
    typereal
    structureunsymmetric
    Cholesky candidate?no
    positive definite?no

    authorK. Gullapalli
    editorT. Davis
    date2010
    kindcircuit simulation problem
    2D/3D problem?no

    Notes:

    Large circuit from Kiran Gullapalli, Freescale Semiconductor
Little fill-in during factorization, if ordered properly..

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD33,792,679
    Cholesky flop count5.8e+08
    nnz(L+U), no partial pivoting, with AMD62,027,032
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD859,101,281,625
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD15249699097204

    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.