diff --git a/smp/src/island.cpp b/smp/src/island.cpp
index 1d9cb8a52..92880f6a9 100644
--- a/smp/src/island.cpp
+++ b/smp/src/island.cpp
@@ -55,11 +55,10 @@ void paradiseo::smp::Island<EOAlgo,EOT>::operator()()
 {
     stopped = false;
     algo(pop);
+    stopped = true;
     // Let's wait the end of communications with the island model
     for(auto& message : sentMessages)
         message.join();
-    stopped = true;
-    //std::cout << "Fin de l'île " << this << std::endl;
 }
 
 template<template <class> class EOAlgo, class EOT>
@@ -77,15 +76,12 @@ eoPop<EOT>& paradiseo::smp::Island<EOAlgo,EOT>::getPop()
 template<template <class> class EOAlgo, class EOT>
 void paradiseo::smp::Island<EOAlgo,EOT>::check()
 {
-    // std::cout << "On check" << std::endl;
+    // Sending
     for(PolicyElement<EOT>& elem : migPolicy)
-    {
         if(!elem(pop))
-        {
-            // std::cout << "On lance l'emmigration" << std::endl;
             send(elem.getSelect());
-        }
-    }
+    
+    // Receiving
     receive();    
 }
 
@@ -98,13 +94,12 @@ bool paradiseo::smp::Island<EOAlgo,EOT>::isStopped(void) const
 template<template <class> class EOAlgo, class EOT>
 void paradiseo::smp::Island<EOAlgo,EOT>::send(eoSelect<EOT>& _select)
 {
+    // Allow island to work alone
     if(model != nullptr)
     {
-        //std::cout << "Ile lance la migration" << std::endl;
         eoPop<EOT> migPop;
         _select(pop, migPop);
-        //std::cout << "   La population migrante est :" << std::endl << migPop << std::endl;
-        
+       
         // Delete delivered messages
         for(auto it = sentMessages.begin(); it != sentMessages.end(); it++)
             if(!it->joinable())
@@ -119,19 +114,12 @@ void paradiseo::smp::Island<EOAlgo,EOT>::receive(void)
 {
     std::lock_guard<std::mutex> lock(this->m);
     while (!listImigrants.empty())
-    {
-        
+    { 
         eoPop<EOT> offspring = listImigrants.front();
         
         // Evaluate objects to integrate
-        //std::cout << "Evaluation des individus : " << std::endl;
         for(auto& indi : offspring)
-        {
             eval(indi);
-            //std::cout << indi << std::endl;
-        }
-        //std::cout << "Ile " << this << " recoit : " << std::endl;
-        //std::cout << offspring << std::endl;
         
         intPolicy(pop, offspring);
         listImigrants.pop();
diff --git a/smp/src/islandModel.cpp b/smp/src/islandModel.cpp
index 69d01a0eb..6d1f390f4 100644
--- a/smp/src/islandModel.cpp
+++ b/smp/src/islandModel.cpp
@@ -50,7 +50,7 @@ void paradiseo::smp::IslandModel<EOT>::operator()()
     // Create table
     table = createTable(topo, islands);
     
-    // Lauching threads
+    // Launching threads
     unsigned i = 0;
     for(auto it : islands)
     {
@@ -72,7 +72,7 @@ void paradiseo::smp::IslandModel<EOT>::operator()()
                 topo.isolateNode(table.getLeft()[it]);
             }
         }        
-        // Check reception
+        // Check sending
         send();
         
         std::this_thread::sleep_for(std::chrono::nanoseconds(10));
@@ -89,27 +89,30 @@ template<class EOT>
 void paradiseo::smp::IslandModel<EOT>::update(eoPop<EOT> _data, AIsland<EOT>* _island)
 {
     std::lock_guard<std::mutex> lock(m);
-    //std::cout << "Pop reçue par le médiateur depuis " << _island << std::endl;
-    //std::cout << _data << std::endl;
     listEmigrants.push(std::pair<eoPop<EOT>,AIsland<EOT>*>(_data, _island));
 }
 
+template<class EOT>  
+void paradiseo::smp::IslandModel<EOT>::setTopology(AbstractTopology& _topo)
+{
+    topo = _topo;
+}
+
 template<class EOT>      
 void paradiseo::smp::IslandModel<EOT>::send(void)
 {
     std::lock_guard<std::mutex> lock(m);
     while (!listEmigrants.empty())
     {
-        //std::cout << "Le mediateur va envoyer de " << listEmigrants.front().second  << " qui est " << table.getLeft()[listEmigrants.front().second] << std::endl;
-
-        unsigned id = table.getLeft()[listEmigrants.front().second];
-        std::vector<unsigned> neighbors = topo.getIdNeighbors(id);
+        // Get the neighbors
+        unsigned idFrom = table.getLeft()[listEmigrants.front().second];
+        std::vector<unsigned> neighbors = topo.getIdNeighbors(idFrom);
+        
+        // Send elements to neighbors
         eoPop<EOT> migPop = listEmigrants.front().first;
-        for (unsigned neighbor : neighbors)
-        {
-            //std::cout << "On envoie à " << neighbor << std::endl;
-            sentMessages.push_back(std::thread(&AIsland<EOT>::update, table.getRight()[neighbor], migPop));
-		}    
+        for (unsigned idTo : neighbors)
+            sentMessages.push_back(std::thread(&AIsland<EOT>::update, table.getRight()[idTo], migPop)); 
+             
         listEmigrants.pop();
     }
 }
diff --git a/smp/src/islandModel.h b/smp/src/islandModel.h
index ad40306dc..8aaaa9c40 100644
--- a/smp/src/islandModel.h
+++ b/smp/src/islandModel.h
@@ -74,6 +74,12 @@ public:
      */
     void update(eoPop<EOT> _data, AIsland<EOT>* _island);
     
+    /**
+     * Change topology
+     * @param _topo New topology.
+     */
+    void setTopology(AbstractTopology& _topo);
+    
 protected:
     
     /**
diff --git a/smp/test/t-smpIsland.cpp b/smp/test/t-smpIsland.cpp
index 60ea34f8c..de88c71a1 100644
--- a/smp/test/t-smpIsland.cpp
+++ b/smp/test/t-smpIsland.cpp
@@ -87,9 +87,8 @@ int main(void)
         model.add(test);
         model.add(test2);
         
-        //model();
-        test();
-        test2();
+        model();
+
         cout << test.getPop() << endl;
         cout << test2.getPop() << endl;
     }