Maybe I managed to find out the number of iters of the field split by adding: fieldsplit_u_ksp_converged_reason.
This gets printed 268 times: Linear UPeqn_fieldsplit_u_ solve converged due to CONVERGED_ITS iterations 1 1. You are using A11 as the preconditioning matrix for the Schur complement. Do you expect this to be a good idea? Good question, I have also tried self and selfp but not much difference! Any suggestions? 2. You are using BJacobi/ILU(0) for A00. Is this a good idea? I have tried other options like hypre and ML but this one looks the best for now, do you have other suggestions?
