Hi to all! I would try the Teko-ML smoothers so I enabled the option Teko_ENABLE_ML_SMOOTHERS but I found that aren't these two headers in the latest Trilinos version (10.12.2) that I am using: #include "Teko_SmootherPreconditionerFactory.hpp" #include "Teko_MLPreconditionerFactory.hpp" May you add them? Thanks! Cheers, Nur A. Fadel