diff --git a/smp/src/abstractIsland.h b/smp/src/abstractIsland.h
index cab0c85c7..5ffb7927b 100644
--- a/smp/src/abstractIsland.h
+++ b/smp/src/abstractIsland.h
@@ -79,12 +79,19 @@ public:
      */
     virtual void check(void) = 0;
     
+    /**
+     * Update the island  by adding population to send in the imigrants list.
+     */
+    virtual void update(eoPop<EOT> _data) = 0;
+    
     /**
      * Check if the algorithm is stopped.
      * @return true if stopped
      */
-    virtual bool isStopped(void) = 0;
-    
+    virtual bool isStopped(void) const = 0;
+
+protected:
+    std::mutex m;    
 };
 
 }
diff --git a/smp/src/bimap.h b/smp/src/bimap.h
index 3ab21ec37..4b1adfed6 100644
--- a/smp/src/bimap.h
+++ b/smp/src/bimap.h
@@ -40,7 +40,7 @@ namespace smp
 /** Bimap
 
 Bidirectional map in order to create a bijection between islands and vertices.
-A and B objects are stocked in two std::set, then if you would avoid instances duplications,
+A and B objects are stocked in two std::map, then if you would like to avoid instances duplications,
 template A and B with pointers.
 
 **/
@@ -50,43 +50,45 @@ class Bimap
 public:
     /**
      * Add a relation 
-     * @param workersNb the number of workers
-     * @param args... list of parameters according to the constructor of your algorithm
+     * @param A right key
+     * @param B left key
      */
-    void add(A a, B b)
+    void add(A& a, B& b)
     {
-        ASet.insert(a);
-        BSet.insert(b);
-        rightAssociation[&a] = &b;
-        leftAssociation[&b] = &a;
+        rightAssociation[a] = b;
+        leftAssociation[b] = a;
+        
+        std::cout << "DUMP" << std::endl;
+        for(auto i : rightAssociation)
+            std::cout << i.first << "------" << i.second << std::endl;
+        for(auto i : leftAssociation)
+            std::cout << i.first << "------" << i.second << std::endl;
+        std::cout << "END DUMP" << std::endl;
     }
     
-    
-    B& getRight(A const a)
+    std::map<A,B> getRight() const
     {
-        return *rightAssociation[&a];
+        return rightAssociation;
     }
     
-    A& getLeft(B const b)
+    std::map<B,A> getLeft() const
     {
-        return *leftAssociation[&b];
+        return leftAssociation;
     }
     
-    unsigned size()
+    unsigned size() const
     {
-        return ASet.size();
+        return leftAssociation.size();
     }
     
-    bool empty()
+    bool empty() const
     {
-        return ASet.empty();
+        return leftAssociation.empty();
     }
 
 protected:
-    std::set<A> ASet;
-    std::set<B> BSet;
-    std::map<A*,B*> rightAssociation;
-    std::map<B*,A*> leftAssociation;
+    std::map<A,B> rightAssociation;
+    std::map<B,A> leftAssociation;
 };
 
 }
diff --git a/smp/src/island.cpp b/smp/src/island.cpp
index 14b154e74..52b9b74af 100644
--- a/smp/src/island.cpp
+++ b/smp/src/island.cpp
@@ -66,12 +66,6 @@ void paradiseo::smp::Island<EOAlgo,EOT>::setModel(IslandModel<EOT>* _model)
     model = _model;
 }
 
-template<template <class> class EOAlgo, class EOT>
-void paradiseo::smp::Island<EOAlgo,EOT>::update(eoPop<EOT>& _data)
-{
-    listImigrants.push_back(&_data);
-}
-
 template<template <class> class EOAlgo, class EOT>
 eoPop<EOT>& paradiseo::smp::Island<EOAlgo,EOT>::getPop()
 {
@@ -94,7 +88,7 @@ void paradiseo::smp::Island<EOAlgo,EOT>::check()
 }
 
 template<template <class> class EOAlgo, class EOT>
-bool paradiseo::smp::Island<EOAlgo,EOT>::isStopped(void)
+bool paradiseo::smp::Island<EOAlgo,EOT>::isStopped(void) const
 {
     return (bool)stopped;
 }
@@ -119,16 +113,39 @@ void paradiseo::smp::Island<EOAlgo,EOT>::send(eoSelect<EOT>& _select)
 template<template <class> class EOAlgo, class EOT>
 void paradiseo::smp::Island<EOAlgo,EOT>::receive(void)
 {
+    std::lock_guard<std::mutex> lock(this->m);
+    if(!listImigrants.empty()) {
+    std::cout << "______________________________________________" << std::endl;
+    std::cout << "Ile : " << this << std::endl;
+    std::cout << "Pop avant : " << std::endl << pop << std::endl;
     while (!listImigrants.empty())
     {
-        eoPop<EOT> offspring = *(listImigrants.front());
+        
+        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();
-        
+
     }
+    std::cout << "Pop après : " << std::endl << pop << std::endl;
+        std::cout << "______________________________________________" << std::endl;
+    }    
 }
+
+template<template <class> class EOAlgo, class EOT>
+void paradiseo::smp::Island<EOAlgo,EOT>::update(eoPop<EOT> _data)
+{
+    std::lock_guard<std::mutex> lock(this->m);
+    listImigrants.push(_data);
+}
+
diff --git a/smp/src/island.h b/smp/src/island.h
index 7b9fbf656..a638407a8 100644
--- a/smp/src/island.h
+++ b/smp/src/island.h
@@ -81,12 +81,6 @@ public:
      */
     virtual void setModel(IslandModel<EOT>* _model);
     
-    /**
-     * Update the list of imigrants.
-     * @param _data Elements to integrate in the main population.
-     */
-    void update(eoPop<EOT>& _data);
-    
     /**
      * Return a reference to the island population.
      * @return Reference to the island population
@@ -98,11 +92,17 @@ public:
      */
     virtual void check(void);
     
+    /**
+     * Update the list of imigrants.
+     * @param _data Elements to integrate in the main population.
+     */
+    void update(eoPop<EOT> _data);
+    
     /**
      * Check if the algorithm is stopped.
      * @return true if stopped
      */
-    virtual bool isStopped(void); 
+    virtual bool isStopped(void) const; 
     
 protected:
 
@@ -121,7 +121,7 @@ protected:
     eoEvalFunc<EOT>& eval;               
     eoPop<EOT> pop;
     EOAlgo<EOT> algo;
-    std::queue<eoPop<EOT>*> listImigrants;
+    std::queue<eoPop<EOT>> listImigrants;
     IntPolicy<EOT>& intPolicy;
     MigPolicy<EOT>& migPolicy;
     std::atomic<bool> stopped;
diff --git a/smp/src/islandModel.cpp b/smp/src/islandModel.cpp
index b478c7d48..f73253731 100644
--- a/smp/src/islandModel.cpp
+++ b/smp/src/islandModel.cpp
@@ -27,51 +27,99 @@ ParadisEO WebSite : http://paradiseo.gforge.inria.fr
 Contact: paradiseo-help@lists.gforge.inria.fr
 */
 
+template<class EOT>
+paradiseo::smp::IslandModel<EOT>::IslandModel(AbstractTopology& _topo) :
+    topo(_topo)
+{ }
+
 template<class EOT>
 void paradiseo::smp::IslandModel<EOT>::add(AIsland<EOT>& _island)
 {
-    static unsigned i = 0;
-    islands[i] = &_island;
-    islands[i]->setModel(this);
-    i++;
+    islands.push_back(&_island);
+    islands.back()->setModel(this);
 }
 
 template<class EOT>
 void paradiseo::smp::IslandModel<EOT>::operator()()
 {
-    std::vector<Thread> threads(islands.size());
-
+    std::vector<std::thread> threads(islands.size());
+    
+    // Construct topology according to the number of islands
+    topo.construct(islands.size());
+    
+    // Create table
+    table = createTable(topo, islands);
+    
+    // Lauching threads
     unsigned i = 0;
     for(auto it : islands)
     {
-        threads[i].start(&AIsland<EOT>::operator(), it.second);
+        threads[i] = std::thread(&AIsland<EOT>::operator(), it);
         i++;
     }
 
     unsigned workingThread = islands.size();
     while(workingThread > 0)
     {
+        // Count working islands
         workingThread = islands.size();
         for(auto& it : islands)
-            if(it.second->isStopped())
+            if(it->isStopped())
                 workingThread--;
+                
+        // Check reception
+        send();
+        
         std::this_thread::sleep_for(std::chrono::nanoseconds(10));
     }
         
     for(auto& thread : threads)
         thread.join();
-        
+    
+    for(auto& message : sentMessages)
+        message.join();   
 }
 
 template<class EOT>  
 void paradiseo::smp::IslandModel<EOT>::update(eoPop<EOT> _data, AIsland<EOT>* _island)
 {
-    std::cout << "Pop reçue par le médiateur" << std::endl;
-    std::lock_guard<std::mutex> lock(this->m);
-
-    std::cout << _data << std::endl;
+    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>::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);
+        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));
+		}    
+        listEmigrants.pop();
+    }
+}
+
+template<class EOT>     
+Bimap<unsigned, AIsland<EOT>*> paradiseo::smp::IslandModel<EOT>::createTable(AbstractTopology& _topo, std::vector<AIsland<EOT>*>& _islands)
+{
+    Bimap<unsigned, AIsland<EOT>*> table;
+    unsigned islandId = 0;
+    for(auto it : islands)
+    {
+        table.add(islandId, it);
+        islandId++;
+    }
     
-
+    return table;
+}
 
diff --git a/smp/src/islandModel.h b/smp/src/islandModel.h
index 5ba24f9bf..ad40306dc 100644
--- a/smp/src/islandModel.h
+++ b/smp/src/islandModel.h
@@ -37,6 +37,7 @@ Contact: paradiseo-help@lists.gforge.inria.fr
 #include <thread>
 #include <bimap.h>
 #include <abstractIsland.h>
+#include <topology/topology.h>
 
 namespace paradiseo
 {
@@ -55,6 +56,8 @@ template<class EOT>
 class IslandModel
 {
 public:
+    IslandModel(AbstractTopology& topo);
+
     /**
      * Add an island to the model.
      * @param _island Island to add.
@@ -72,9 +75,19 @@ public:
     void update(eoPop<EOT> _data, AIsland<EOT>* _island);
     
 protected:
+    
+    /**
+     * Send population to islands
+     */
+    void send(void);
+    
+    Bimap<unsigned, AIsland<EOT>*> createTable(AbstractTopology& _topo, std::vector<AIsland<EOT>*>& _islands);
+
     std::queue<std::pair<eoPop<EOT>,AIsland<EOT>*>> listEmigrants;
-    Bimap<unsigned, unsigned> table;
-    std::map<unsigned, AIsland<EOT>*> islands;
+    Bimap<unsigned, AIsland<EOT>*> table;
+    std::vector<AIsland<EOT>*> islands;
+    AbstractTopology& topo;
+    std::vector<std::thread> sentMessages;
     std::mutex m;
 };
 
diff --git a/smp/src/smp.h b/smp/src/smp.h
index 05b22b199..29ebfff45 100644
--- a/smp/src/smp.h
+++ b/smp/src/smp.h
@@ -40,4 +40,10 @@ Contact: paradiseo-help@lists.gforge.inria.fr
 #include <policyElement.h>
 #include <islandNotifier.h>
 
+// Topologies
+#include <topology/topology.h>
+#include <topology/complete.h>
+#include <topology/ring.h>
+#include <topology/star.h>
+
 #endif
diff --git a/smp/src/topology/abstractTopology.h b/smp/src/topology/abstractTopology.h
index 0573097f5..a60f944fe 100644
--- a/smp/src/topology/abstractTopology.h
+++ b/smp/src/topology/abstractTopology.h
@@ -52,13 +52,13 @@ public :
     * Return a vector containing the index of nearby nodes according to the topology
     * @param idIsland index of the node of which you want the neighbors.
     */
-	virtual std::vector<unsigned> getIdNeighbors(unsigned idIsland) const =0;
+	virtual std::vector<unsigned> getIdNeighbors(unsigned idIsland) const = 0;
 	
 	/**
 	* Construct or re-construct a topology with the given number of nodes.
 	* @param nbIsland number of nodes for the topology 
 	*/
-	virtual void construct(unsigned nbIsland) =0;
+	virtual void construct(unsigned nbIsland) = 0;
 };
 
 }
diff --git a/smp/src/topology/topology.h b/smp/src/topology/topology.h
index d159a9309..2527103b4 100644
--- a/smp/src/topology/topology.h
+++ b/smp/src/topology/topology.h
@@ -27,6 +27,9 @@ ParadisEO WebSite : http://paradiseo.gforge.inria.fr
 Contact: paradiseo-help@lists.gforge.inria.fr
 */
 
+#ifndef TOPOLOGY_H_
+#define TOPOLOGY_H_
+
 #include <vector>
 #include <topology/abstractTopology.h>
 
@@ -76,3 +79,5 @@ private :
 }
 
 }
+
+#endif
diff --git a/smp/test/t-smpIsland.cpp b/smp/test/t-smpIsland.cpp
index 82f92825a..4468831e7 100644
--- a/smp/test/t-smpIsland.cpp
+++ b/smp/test/t-smpIsland.cpp
@@ -9,11 +9,11 @@ using namespace std;
 int main(void)
 {
     typedef struct {
-        unsigned popSize = 100;
+        unsigned popSize = 3;
         unsigned tSize = 2;
         double pCross = 0.8;
         double pMut = 0.7;
-        unsigned maxGen = 10000;
+        unsigned maxGen = 10;
     } Param; 
 
     Param param;
@@ -77,12 +77,13 @@ int main(void)
         
         // // Integration policy
         eoPlusReplacement<Indi> intPolicy_2;
-        
+  
         Island<eoEasyEA,Indi> test2(param.popSize, chromInit, intPolicy_2, migPolicy_2, genCont_2, plainEval, select, transform, replace);
         
-        //test();
+        // Topology
+        Topology<Complete> topo;
         
-        IslandModel<Indi> model;
+        IslandModel<Indi> model(topo);
         model.add(test);
         model.add(test2);