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Use:

  1. Set convergence criteria. Convergence can be controlled by the number of iterations, as well as various tolerances such as relative residual, preconditioned residual, etc. Like all parameters, reasonable defaults are used. Users are free to change these, though care must be taken. For example, if an iterative method is used as a preconditioner for a Krylov method, a constant number of iterations is usually required.

  2. Solve the system. This is just the Solve() routine.


next up previous contents index
Next: 7.1 SMG Up: 7. Solvers and Preconditioners Previous: Setup:   Contents   Index
Tom Treadway 2003-10-22