Set one more parameter in AMG preconditioner setup.

git-svn-id: https://svn.dealii.org/trunk@19334 0785d39b-7218-0410-832d-ea1e28bc413d

diff --git a/deal.II/lac/source/trilinos_precondition.cc b/deal.II/lac/source/trilinos_precondition.cc
index 646cb9f5da614c427811d5a31d4eb6dd97afb792..1ecdbead3ee9df2a3927934063eb738b56908185 100755 (executable)
--- a/deal.II/lac/source/trilinos_precondition.cc
+++ b/deal.II/lac/source/trilinos_precondition.cc
@@ -558,6 +558,7 @@ namespace TrilinosWrappers
   
     parameter_list.set("smoother: sweeps", 
                       static_cast<int>(additional_data.smoother_sweeps));
+    parameter_list.set("smoother: Chebyshev alpha",10.);
     parameter_list.set("smoother: ifpack overlap", 
                       static_cast<int>(additional_data.smoother_overlap));
     parameter_list.set("aggregation: threshold",