From 4c72af95462a5a1dc8af35f7a5a81706ed570059 Mon Sep 17 00:00:00 2001
From: Markus Blatt <markus@dr-blatt.de>
Date: Tue, 12 May 2020 18:06:20 +0200
Subject: [PATCH] Make only rank zero honor verbosity in flexible solvers.

Previously all the ranks print linear solver statistics in verbose
mode which cluttered the output in parallel runs. Now only rank 0
will print like it should be.
---
 opm/simulators/linalg/FlexibleSolver.hpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/opm/simulators/linalg/FlexibleSolver.hpp b/opm/simulators/linalg/FlexibleSolver.hpp
index 2d8bda743..f18039e98 100644
--- a/opm/simulators/linalg/FlexibleSolver.hpp
+++ b/opm/simulators/linalg/FlexibleSolver.hpp
@@ -143,11 +143,11 @@ private:
         scalarproduct_ = std::make_shared<Dune::SeqScalarProduct<VectorType>>();
     }
 
-    void initSolver(const boost::property_tree::ptree& prm)
+    void initSolver(const boost::property_tree::ptree& prm, bool isMaster)
     {
         const double tol = prm.get<double>("tol", 1e-2);
         const int maxiter = prm.get<int>("maxiter", 200);
-        const int verbosity = prm.get<int>("verbosity", 0);
+        const int verbosity = isMaster? prm.get<int>("verbosity", 0) : 0;
         const std::string solver_type = prm.get<std::string>("solver", "bicgstab");
         if (solver_type == "bicgstab") {
             linsolver_.reset(new Dune::BiCGSTABSolver<VectorType>(*linearoperator_,
@@ -190,7 +190,7 @@ private:
               const std::function<VectorTypeT()> weightsCalculator, const Comm& comm)
     {
         initOpPrecSp(matrix, prm, weightsCalculator, comm);
-        initSolver(prm);
+        initSolver(prm, comm.communicator().rank()==0);
     }
 
     std::shared_ptr<AbstractOperatorType> linearoperator_;