istl-2.2.1.patch

Index: dune/istl/paamg/amg.hh
===================================================================
--- dune/istl/paamg/amg.hh	(revision 1705)
+++ dune/istl/paamg/amg.hh	(working copy)
@@ -504,13 +504,13 @@
 		  // We are still participating on this level
 		  solver_ = new BiCGSTABSolver<X>(const_cast<M&>(matrices_->matrices().coarsest().getRedistributed()), 
 						  *scalarProduct_, 
-						  *coarseSmoother_, 1E-2, 10000, 0);
+						  *coarseSmoother_, 1E-12, 10000, 0);
 		else
 		  solver_ = 0;
 	      }else
 	      solver_ = new BiCGSTABSolver<X>(const_cast<M&>(*matrices_->matrices().coarsest()), 
 					      *scalarProduct_, 
-					      *coarseSmoother_, 1E-2, 1000, 0);
+					      *coarseSmoother_, 1E-12, 1000, 0);
 	  }
       }
     }