Matrix: Chen/pkustk14

Description: PKU SYMMETRIC STIFFNESS, TALL BUILDING

Chen/pkustk14 graph
(undirected graph drawing)

Chen/pkustk14

  • Home page of the UF Sparse Matrix Collection
  • Matrix group: Chen
  • Click here for a description of the Chen 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: 6 MB. Use UFget(860) or UFget('Chen/pkustk14') in MATLAB.
  • download in Matrix Market format, file size: 16 MB.
  • download in Rutherford/Boeing format, file size: 5 MB.

    Matrix properties
    number of rows151,926
    number of columns151,926
    nonzeros14,836,504
    structural full rank?yes
    structural rank151,926
    # of blocks from dmperm1
    # strongly connected comp.1
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typebinary
    structuresymmetric
    Cholesky candidate?yes
    positive definite?no

    authorP. Chen
    editorT. Davis
    date2002
    kindstructural problem
    2D/3D problem?yes

    Ordering statistics:result
    nnz(chol(P*(A+A'+s*I)*P')) with AMD116,385,678
    Cholesky flop count1.6e+11
    nnz(L+U), no partial pivoting, with AMD232,619,430
    nnz(V) for QR, upper bound nnz(L) for LU, with COLAMD261,946,841
    nnz(R) for QR, upper bound nnz(U) for LU, with COLAMD528,246,439

    Maintained by Tim Davis, last updated 01-Apr-2011.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.