• UF Sparse Matrix Collection
  • Matrix group: Boeing
  • Click here for a description of the Boeing group.
  • Click here for a list of all matrices
  • Click here for a list of all matrix groups

  • Matrix: Boeing/bcsstm39
  • Description: SHUTTLE SOLID ROCKET BOOSTER, MASS MATRIX , E. PRAMONO, NASA AMES
  • download as a MATLAB mat-file, file size: 143 KB. Use UFget(349) or UFget('Boeing/bcsstm39') in MATLAB.
  • download in Matrix Market format
  • download in Rutherford/Boeing format

    Boeing/bcsstm39

    dmperm of Boeing/bcsstm39

    Boeing/bcsstm39 graph

    Matrix properties
    number of rows46,772
    number of columns46,772
    nonzeros46,772
    structural full rank?yes
    structural rank46,772
    # of blocks from dmperm46,772
    # strongly connected comp.46,772
    entries not in dmperm blocks0
    explicit zero entries0
    nonzero pattern symmetrysymmetric
    numeric value symmetrysymmetric
    typereal
    structuresymmetric
    Cholesky candidate?yes
    positive definite?yes

    authorR. Grimes
    editorT. Davis
    date1995
    kindstructural problem
    2D/3D problem?yes

    Ordering statistics:AMD METIS DMPERM+
    nnz(chol(P*(A+A'+s*I)*P'))46,772 46,772 46,772
    Cholesky flop count4.7e+04 4.7e+04 4.7e+04
    nnz(L+U), no partial pivoting46,772 46,772 46,772
    nnz(V) for QR, upper bound nnz(L) for LU46,772 46,772 46,772
    nnz(R) for QR, upper bound nnz(U) for LU46,772 46,772 46,772

    Maintained by Tim Davis, last updated 04-May-2008.
    Matrix pictures by cspy, a MATLAB function in the CSparse package.
    Matrix graphs by Yifan Hu, AT&T Labs Visualization Group.