Step 2 -- Performance Evaluation

The evaluation parameter is the criterion you will use to evaluate different solvers. You can select a linear combination of the following:

  1. the CPU time required to build the preconditioner;
  2. the CPU time required to solve the linear system;
  3. the iterations to converge;
  4. the condition number of the preconditioned system. This latter option requires either CG with condnum or GMRES with condnum.