petsc-3.3-p7 2013-05-11

matrix-free methods

  • ex38.c u`` + u^{2} = f. Different matrices for the Jacobian and the preconditioner.
    Demonstrates the use of matrix-free Newton-Krylov methods in conjunction
    with a user-provided preconditioner. Input arguments are:
    -snes_mf : Use matrix-free Newton methods
    -user_precond : Employ a user-defined preconditioner. Used only with
    matrix-free methods in this example.
  • ex44.c u`` + u^{2} = f.
    Demonstrates the use of matrix-free Newton-Krylov methods in conjunction
    with a user-provided preconditioner. Simplified from ex6.c
    Input arguments are:
    -snes_mf : Use matrix-free Newton methods
    -user_precond : Employ a user-defined preconditioner. Used only with
    matrix-free methods in this example.
  • ex6.c u`` + u^{2} = f. Different matrices for the Jacobian and the preconditioner.
    Demonstrates the use of matrix-free Newton-Krylov methods in conjunction
    with a user-provided preconditioner. Input arguments are:
    -snes_mf : Use matrix-free Newton methods
    -user_precond : Employ a user-defined preconditioner. Used only with
    matrix-free methods in this example.