diff --git a/trunk/paradiseo-peo/src/core/communicable.cpp b/trunk/paradiseo-peo/src/core/communicable.cpp
index 6ca4fa80f..3caf6ee77 100644
--- a/trunk/paradiseo-peo/src/core/communicable.cpp
+++ b/trunk/paradiseo-peo/src/core/communicable.cpp
@@ -93,5 +93,9 @@ void Communicable :: resume () {
   sem_post (& sem_stop);
 }
 
+void initCommunicableEnv () {
 
-
+  key_to_comm.resize (1);
+  comm_to_key.clear ();
+  Communicable :: num_comm = 0;
+}
diff --git a/trunk/paradiseo-peo/src/core/communicable.h b/trunk/paradiseo-peo/src/core/communicable.h
index 11348707e..7ec179d1a 100644
--- a/trunk/paradiseo-peo/src/core/communicable.h
+++ b/trunk/paradiseo-peo/src/core/communicable.h
@@ -39,6 +39,7 @@
 
 #include <semaphore.h>
 
+
 typedef unsigned COMM_ID;
 
 class Communicable {
@@ -56,7 +57,11 @@ public :
 
   void stop (); /* It suspends the current process */
   void resume (); /* It resumes ___________ */
-  
+
+public :
+
+  static unsigned num_comm;
+
 protected :
 
   COMM_ID key;
@@ -64,10 +69,10 @@ protected :
   sem_t sem_lock;
   
   sem_t sem_stop;
-
-  static unsigned num_comm;
 };
 
+extern void initCommunicableEnv ();
+
 extern Communicable * getCommunicable (COMM_ID __key); 
 
 //extern COMM_ID getKey (const Communicable * __comm);
diff --git a/trunk/paradiseo-peo/src/core/eoPop_mesg.h b/trunk/paradiseo-peo/src/core/eoPop_mesg.h
index c0b6cc009..948e17ae2 100644
--- a/trunk/paradiseo-peo/src/core/eoPop_mesg.h
+++ b/trunk/paradiseo-peo/src/core/eoPop_mesg.h
@@ -41,6 +41,7 @@
 
 #include "messaging.h"
 
+
 template <class EOT> void pack (const eoPop <EOT> & __pop) {
 
   pack ((unsigned) __pop.size ());
@@ -57,4 +58,5 @@ template <class EOT> void unpack (eoPop <EOT> & __pop) {
   for (unsigned i = 0; i < n; i ++)
     unpack (__pop [i]);
 }
+
 #endif
diff --git a/trunk/paradiseo-peo/src/core/eoVector_mesg.h b/trunk/paradiseo-peo/src/core/eoVector_mesg.h
index c6de15d53..f5da8945e 100644
--- a/trunk/paradiseo-peo/src/core/eoVector_mesg.h
+++ b/trunk/paradiseo-peo/src/core/eoVector_mesg.h
@@ -41,6 +41,7 @@
 
 #include "messaging.h"
 
+
 template <class F, class T> void pack (const eoVector <F, T> & __v) {
 
   pack (__v.fitness ()) ;
diff --git a/trunk/paradiseo-peo/src/core/messaging.h b/trunk/paradiseo-peo/src/core/messaging.h
index 4b9d0b3d9..0a632fa05 100644
--- a/trunk/paradiseo-peo/src/core/messaging.h
+++ b/trunk/paradiseo-peo/src/core/messaging.h
@@ -83,7 +83,6 @@ template <class U, class V> void pack (const std :: pair <U, V> & __pair) {
 }
 
 
-//
 
 /* Char */
 extern void unpack (char & __c); 
diff --git a/trunk/paradiseo-peo/src/core/peo_debug.cpp b/trunk/paradiseo-peo/src/core/peo_debug.cpp
index 973493aa7..bd0d346ee 100644
--- a/trunk/paradiseo-peo/src/core/peo_debug.cpp
+++ b/trunk/paradiseo-peo/src/core/peo_debug.cpp
@@ -78,24 +78,28 @@ void endDebugging () {
   for (unsigned i = 0; i < files.size (); i ++)
     if (files [i] != stdout)
       fclose (files [i]);
+  files.clear();
 }
 
 void printDebugMessage (const char * __mess) {
-  return;
+
   if (debug) {
 
     char buff [MAX_BUFF_SIZE];
+    char localTime [MAX_BUFF_SIZE];
     time_t t = time (0);
 
     /* Date */
-    sprintf (buff, "[%s][%s: ", host, ctime (& t));
-    * strchr (buff, '\n') = ']';
+    strcpy( localTime, ctime (& t) ); 
+    localTime[ strlen( localTime )-1 ] = ']';
+    sprintf (buff, "[%s][%s: ", host, localTime );
+
     for (unsigned i = 0; i < files.size (); i ++)
       fprintf (files [i], buff);
 
     /* Message */
     sprintf (buff, "%s", __mess);
-    
+
     for (unsigned i = 0; i < files.size (); i ++) {
       fputs (buff, files [i]);
       fputs ("\n", files [i]);
diff --git a/trunk/paradiseo-peo/src/core/peo_fin.cpp b/trunk/paradiseo-peo/src/core/peo_fin.cpp
index d4e2e5a4f..c6b41cceb 100644
--- a/trunk/paradiseo-peo/src/core/peo_fin.cpp
+++ b/trunk/paradiseo-peo/src/core/peo_fin.cpp
@@ -39,7 +39,6 @@
 #include "runner.h"
 #include "rmc.h"
 
-
 void peo :: finalize () {
 
   printDebugMessage ("waiting for the termination of all threads");
diff --git a/trunk/paradiseo-peo/src/core/peo_fin.h b/trunk/paradiseo-peo/src/core/peo_fin.h
index 9cdaf2bf8..cf23cbfdb 100644
--- a/trunk/paradiseo-peo/src/core/peo_fin.h
+++ b/trunk/paradiseo-peo/src/core/peo_fin.h
@@ -38,7 +38,7 @@
 #define __peo_finalize_h
 
 namespace peo {
-  
+
   extern void finalize ();
 }
 
diff --git a/trunk/paradiseo-peo/src/core/peo_init.cpp b/trunk/paradiseo-peo/src/core/peo_init.cpp
index 301090a34..f90f27476 100644
--- a/trunk/paradiseo-peo/src/core/peo_init.cpp
+++ b/trunk/paradiseo-peo/src/core/peo_init.cpp
@@ -41,6 +41,27 @@
 #include "peo_debug.h"
 #include "rmc.h"
 
+
+extern void initCommunicableEnv ();
+
+extern void initThreadsEnv ();
+extern void initReactiveThreadsEnv ();
+
+extern void initRunnersEnv ();
+extern void initWorkersEnv ();
+
+
+static void initExecutionEnv() {
+
+  initCommunicableEnv ();
+
+  initThreadsEnv ();
+  initReactiveThreadsEnv ();
+
+  initRunnersEnv ();
+  initWorkersEnv ();
+}
+
 namespace peo {
 
   int * argc;
@@ -52,13 +73,16 @@ namespace peo {
     argc = & __argc;
     
     argv = & __argv;
-    
+
+    /* Initializing the execution environment */
+    initExecutionEnv();
+
     /* Initializing the the Resource Management and Communication */
     initRMC (__argc, __argv);
 
     /* Loading the common parameters */ 
     loadParameters (__argc, __argv);
-    
+
     /* */
     initDebugging ();
   }
diff --git a/trunk/paradiseo-peo/src/core/peo_run.cpp b/trunk/paradiseo-peo/src/core/peo_run.cpp
index b379146af..ceb01da6f 100644
--- a/trunk/paradiseo-peo/src/core/peo_run.cpp
+++ b/trunk/paradiseo-peo/src/core/peo_run.cpp
@@ -40,7 +40,7 @@
 #include "runner.h"
 
 void peo :: run () {
-  
+
   startRunners ();
 
   runRMC ();
diff --git a/trunk/paradiseo-peo/src/core/reac_thread.cpp b/trunk/paradiseo-peo/src/core/reac_thread.cpp
index d771a8ad4..ca341e475 100644
--- a/trunk/paradiseo-peo/src/core/reac_thread.cpp
+++ b/trunk/paradiseo-peo/src/core/reac_thread.cpp
@@ -56,9 +56,18 @@ void ReactiveThread :: wakeUp () {
   sem_post (& sem);	
 }
 
+void initReactiveThreadsEnv () {
+
+  the_end = false;
+  reac_threads.clear ();
+}
+
 void stopReactiveThreads () {
 
   the_end = true;
   for (unsigned i = 0; i < reac_threads.size (); i ++)
-    reac_threads [i] -> wakeUp  ();	
+    reac_threads [i] -> wakeUp  ();
+  reac_threads.clear ();
 }
+
+bool theEnd () { return the_end; }
diff --git a/trunk/paradiseo-peo/src/core/reac_thread.h b/trunk/paradiseo-peo/src/core/reac_thread.h
index b3cd71912..91dad6221 100644
--- a/trunk/paradiseo-peo/src/core/reac_thread.h
+++ b/trunk/paradiseo-peo/src/core/reac_thread.h
@@ -41,6 +41,7 @@
 
 #include "thread.h"
 
+
 class ReactiveThread : public Thread {
 	
 public:
@@ -51,13 +52,16 @@ public:
   void sleep ();
   
   void wakeUp ();
-    
+
 private:
 
   sem_t sem;
-   
 };
 
+extern void initReactiveThreadsEnv ();
+
 extern void stopReactiveThreads ();
 
-#endif /*THREAD_H_*/
+extern bool theEnd ();
+
+#endif /*REAC_THREAD_H_*/
diff --git a/trunk/paradiseo-peo/src/core/runner.cpp b/trunk/paradiseo-peo/src/core/runner.cpp
index 827d20f85..199ae5a2a 100644
--- a/trunk/paradiseo-peo/src/core/runner.cpp
+++ b/trunk/paradiseo-peo/src/core/runner.cpp
@@ -44,6 +44,9 @@
 #include "../rmc/mpi/mess.h"
 #include "../rmc/mpi/tags.h"
 
+#include "../rmc/mpi/node.h"
+#include "../rmc/mpi/schema.h"
+
 
 static std :: vector <pthread_t *> ll_threads; /* Low-level runner threads */ 
 
@@ -63,8 +66,11 @@ extern int getNumberOfNodes ();
 
 Runner :: Runner () {
 
+  exec_id = 0;
   def_id = ++ num_def_runners;
+
   the_runners.push_back (this);
+
   sem_init (& sem_start, 0, 0);
   sem_init (& sem_cntxt, 0, 0);
 }
@@ -76,7 +82,12 @@ RUNNER_ID Runner :: getDefinitionID () {
 
 RUNNER_ID Runner :: getExecutionID () {
 
-  return def_id;
+  return exec_id;
+}
+
+void Runner :: setExecutionID (const RUNNER_ID& execution_id) {
+
+  exec_id = execution_id;
 }
 
 Runner * getRunner (RUNNER_ID __key) {
@@ -101,7 +112,6 @@ void unpackExecutionContext () {
 
 void initializeContext () {
 
-
   initMessage ();
   packExecutionContext ();
   sendMessageToAll (EXECUTION_CONTEXT_TAG);
@@ -121,6 +131,13 @@ void initializeContext () {
 
   cleanBuffers ();
 
+  // setting up the execution IDs
+  for (unsigned i = 0; i < the_runners.size (); i ++)
+    the_runners [i] -> setExecutionID ( my_node -> execution_id_run[ i ] );
+
+
+  // synchronizing - all the nodes have to finish initializing
+  // the context before actually executing the runners
   synchronizeNodes ();
 
   for (unsigned i = 0; i < the_runners.size (); i ++)
@@ -163,6 +180,7 @@ void startRunners () {
 void joinRunners () {
 
   joinThreads (ll_threads);
+  the_runners.clear();
 }
 
 bool atLeastOneActiveRunner () {
@@ -201,3 +219,13 @@ void unpackTerminationOfRunner () {
     stopReactiveThreads ();
   }
 }
+
+void initRunnersEnv () {
+
+  ll_threads.clear ();
+  the_runners.clear ();
+
+  num_def_runners = 0;
+  num_local_exec_runners = 0;
+  num_exec_runners = 0;
+}
diff --git a/trunk/paradiseo-peo/src/core/runner.h b/trunk/paradiseo-peo/src/core/runner.h
index ba9ba56ac..fd6bf294e 100644
--- a/trunk/paradiseo-peo/src/core/runner.h
+++ b/trunk/paradiseo-peo/src/core/runner.h
@@ -56,6 +56,8 @@ public :
 
   RUNNER_ID getExecutionID ();
 
+  void setExecutionID (const RUNNER_ID& execution_id);
+
   bool isAssignedLocally ();
 
   void waitStarting ();
@@ -80,9 +82,12 @@ private :
   sem_t sem_cntxt;
 
   unsigned def_id;
+  unsigned exec_id;
 };
 
 
+extern void initRunnersEnv ();
+
 extern Runner * getRunner (RUNNER_ID __key); 
 
 extern void initializeContext ();
@@ -97,5 +102,4 @@ extern unsigned numberOfActiveRunners ();
 
 extern void unpackTerminationOfRunner ();
 
-
 #endif
diff --git a/trunk/paradiseo-peo/src/core/service.cpp b/trunk/paradiseo-peo/src/core/service.cpp
index c843aec10..8bf981af0 100644
--- a/trunk/paradiseo-peo/src/core/service.cpp
+++ b/trunk/paradiseo-peo/src/core/service.cpp
@@ -51,9 +51,8 @@ Service * getService (SERVICE_ID __key) {
   return dynamic_cast <Service *> (getCommunicable (__key));
 }
 
-void Service :: notifySendingData () {
+void Service :: notifySendingData () { }
 
-}
 void Service :: notifySendingResourceRequest () {
 
   num_sent_rr --;
@@ -61,26 +60,14 @@ void Service :: notifySendingResourceRequest () {
     notifySendingAllResourceRequests ();
 }
 
-void Service :: notifySendingAllResourceRequests () {
+void Service :: notifySendingAllResourceRequests () { }
 
-}
+void Service :: packData () {}
 
-void Service :: packData () {
+void Service :: unpackData () {}
 
-}
+void Service :: execute () {}
 
-void Service :: unpackData () {
+void Service :: packResult () {}
 
-}
-
-void Service :: execute () {
-
-}
-  
-void Service :: packResult () {
-
-}
-
-void Service :: unpackResult () {
-
-}
+void Service :: unpackResult () {}
diff --git a/trunk/paradiseo-peo/src/core/service.h b/trunk/paradiseo-peo/src/core/service.h
index 67a0fef03..fda8daf78 100644
--- a/trunk/paradiseo-peo/src/core/service.h
+++ b/trunk/paradiseo-peo/src/core/service.h
@@ -40,6 +40,7 @@
 #include "communicable.h"
 #include "thread.h"
 
+
 typedef unsigned SERVICE_ID;
 
 class Service : public Communicable {
diff --git a/trunk/paradiseo-peo/src/core/thread.cpp b/trunk/paradiseo-peo/src/core/thread.cpp
index 8b5e07ac0..e1fa309c8 100644
--- a/trunk/paradiseo-peo/src/core/thread.cpp
+++ b/trunk/paradiseo-peo/src/core/thread.cpp
@@ -73,6 +73,12 @@ void Thread :: setPassive () {
   } 
 }
 
+void initThreadsEnv () {
+
+  threads.clear ();
+  num_act = 0;
+}
+
 bool atLeastOneActiveThread () {
 
   return num_act;
@@ -95,6 +101,9 @@ void addThread (Thread * __hl_thread, std :: vector <pthread_t *> & __ll_threads
 
 void joinThreads (std :: vector <pthread_t *> & __threads) {
 
-  for (unsigned i = 0; i < __threads.size (); i ++)    
-    pthread_join (* __threads [i], 0);  
+  for (unsigned i = 0; i < __threads.size (); i ++) {
+    pthread_join (* __threads [i], 0);
+    delete __threads [i];
+  }
+  __threads.clear();
 }
diff --git a/trunk/paradiseo-peo/src/core/thread.h b/trunk/paradiseo-peo/src/core/thread.h
index 16762db76..4f4925c3d 100644
--- a/trunk/paradiseo-peo/src/core/thread.h
+++ b/trunk/paradiseo-peo/src/core/thread.h
@@ -39,8 +39,8 @@
 
 #include <vector>
 
-/* A high-level thread */
 
+/* A high-level thread */
 class Thread {
 	
 public:
@@ -63,6 +63,8 @@ private :
   bool act;
 };
 
+extern void initThreadsEnv ();
+
 extern void addThread (Thread * __hl_thread, std :: vector <pthread_t *> & __ll_threads);
 
 extern void joinThreads (std :: vector <pthread_t *> & __ll_threads);
diff --git a/trunk/paradiseo-peo/src/peoParallelAlgorithmWrapper.h b/trunk/paradiseo-peo/src/peoParallelAlgorithmWrapper.h
index c7b430e6a..192bc282f 100644
--- a/trunk/paradiseo-peo/src/peoParallelAlgorithmWrapper.h
+++ b/trunk/paradiseo-peo/src/peoParallelAlgorithmWrapper.h
@@ -45,81 +45,117 @@
 
 
 class peoParallelAlgorithmWrapper : public Runner
-  {
+{
 
-  public:
+ public:
 
-    template< typename AlgorithmType > peoParallelAlgorithmWrapper( AlgorithmType& externalAlgorithm )
-        : algorithm( new Algorithm< AlgorithmType, void >( externalAlgorithm ) )
+  template< typename AlgorithmType > peoParallelAlgorithmWrapper( AlgorithmType& externalAlgorithm )
+    : algorithm( new Algorithm< AlgorithmType, void >( externalAlgorithm ) )
     {}
 
-    template< typename AlgorithmType, typename AlgorithmDataType > peoParallelAlgorithmWrapper( AlgorithmType& externalAlgorithm, AlgorithmDataType& externalData )
-        : algorithm( new Algorithm< AlgorithmType, AlgorithmDataType >( externalAlgorithm, externalData ) )
+  template< typename AlgorithmType, typename AlgorithmDataType > peoParallelAlgorithmWrapper( AlgorithmType& externalAlgorithm, AlgorithmDataType& externalData )
+    : algorithm( new Algorithm< AlgorithmType, AlgorithmDataType >( externalAlgorithm, externalData ) )
     {}
 
-    ~peoParallelAlgorithmWrapper()
+  template< typename AlgorithmReturnType > peoParallelAlgorithmWrapper( AlgorithmReturnType& (*externalAlgorithm)() )
+    : algorithm( new FunctionAlgorithm< AlgorithmReturnType, void >( externalAlgorithm ) )
+    {}
+
+  template< typename AlgorithmReturnType, typename AlgorithmDataType > peoParallelAlgorithmWrapper( AlgorithmReturnType& (*externalAlgorithm)( AlgorithmDataType& ), AlgorithmDataType& externalData )
+    : algorithm( new FunctionAlgorithm< AlgorithmReturnType, AlgorithmDataType >( externalAlgorithm, externalData ) )
+    {}
+
+  ~peoParallelAlgorithmWrapper()
     {
-
+      
       delete algorithm;
     }
 
-    void run()
+  void run()
+  {
+    algorithm->operator()();
+  }
+
+  
+ private:
+
+  struct AbstractAlgorithm
+  {
+	
+    // virtual destructor as we will be using inheritance and polymorphism
+    virtual ~AbstractAlgorithm()
+    { }
+
+    // operator to be called for executing the algorithm
+    virtual void operator()()
+    { }
+  };
+  
+  template< typename AlgorithmType, typename AlgorithmDataType > struct Algorithm : public AbstractAlgorithm
+  {
+
+  Algorithm( AlgorithmType& externalAlgorithm, AlgorithmDataType& externalData )
+    : algorithm( externalAlgorithm ), algorithmData( externalData )
+    {}
+
+    virtual void operator()()
     {
-      algorithm->operator()();
+      algorithm( algorithmData );
     }
 
-
-  private:
-
-    struct AbstractAlgorithm
-      {
-
-        // virtual destructor as we will be using inheritance and polymorphism
-        virtual ~AbstractAlgorithm()
-        { }
-
-        // operator to be called for executing the algorithm
-        virtual void operator()()
-        { }
-      };
-
-
-  template< typename AlgorithmType, typename AlgorithmDataType > struct Algorithm : public AbstractAlgorithm
-      {
-
-        Algorithm( AlgorithmType& externalAlgorithm, AlgorithmDataType& externalData )
-            : algorithm( externalAlgorithm ), algorithmData( externalData )
-        {}
-
-        virtual void operator()()
-        {
-          algorithm( algorithmData );
-        }
-
-        AlgorithmType& algorithm;
-        AlgorithmDataType& algorithmData;
-      };
-
+    AlgorithmType& algorithm;
+    AlgorithmDataType& algorithmData;
+  };
 
   template< typename AlgorithmType > struct Algorithm< AlgorithmType, void >  : public AbstractAlgorithm
-      {
+  {
 
-        Algorithm( AlgorithmType& externalAlgorithm ) : algorithm( externalAlgorithm )
-        {}
+  Algorithm( AlgorithmType& externalAlgorithm ) : algorithm( externalAlgorithm )
+    {}
 
-        virtual void operator()()
-        {
-          algorithm();
-        }
-
-        AlgorithmType& algorithm;
-      };
-
-
-  private:
-
-    AbstractAlgorithm* algorithm;
+    virtual void operator()()
+    {
+      algorithm();
+    }
+    
+    AlgorithmType& algorithm;
   };
 
+  template< typename AlgorithmReturnType, typename AlgorithmDataType > struct FunctionAlgorithm : public AbstractAlgorithm
+  {
+
+  FunctionAlgorithm( AlgorithmReturnType (*externalAlgorithm)( AlgorithmDataType& ), AlgorithmDataType& externalData )
+    : algorithm( externalAlgorithm ), algorithmData( externalData )
+    {}
+    
+    virtual void operator()()
+    {
+      algorithm( algorithmData );
+    }
+
+    AlgorithmReturnType (*algorithm)( AlgorithmDataType& );
+    AlgorithmDataType& algorithmData;
+  };
+  
+  template< typename AlgorithmReturnType > struct FunctionAlgorithm< AlgorithmReturnType, void > : public AbstractAlgorithm
+  {
+
+  FunctionAlgorithm( AlgorithmReturnType (*externalAlgorithm)() )
+    : algorithm( externalAlgorithm )
+    {}
+    
+    virtual void operator()()
+    {
+      algorithm();
+    }
+    
+    AlgorithmReturnType (*algorithm)();
+  };
+  
+ private:
+
+  AbstractAlgorithm* algorithm;
+};
+
 
 #endif
diff --git a/trunk/paradiseo-peo/src/peoSyncIslandMig.h b/trunk/paradiseo-peo/src/peoSyncIslandMig.h
index 65d91ebf7..71abae0e3 100644
--- a/trunk/paradiseo-peo/src/peoSyncIslandMig.h
+++ b/trunk/paradiseo-peo/src/peoSyncIslandMig.h
@@ -230,8 +230,8 @@ template< class EOT > void peoSyncIslandMig< EOT > :: pack()
 
   lock ();
 
-  pack( coop_em.front()->getKey() );
-  pack( em.front() );
+  ::pack( coop_em.front()->getKey() );
+  ::pack( em.front() );
   coop_em.pop();
   em.pop();
 
@@ -245,7 +245,7 @@ template< class EOT > void peoSyncIslandMig< EOT > :: unpack()
   lock ();
 
   eoPop< EOT > mig;
-  unpack( mig );
+  ::unpack( mig );
   imm.push( mig );
 
   unlock();
diff --git a/trunk/paradiseo-peo/src/peoSynchronousMultiStart.h b/trunk/paradiseo-peo/src/peoSynchronousMultiStart.h
index aa2a00b1d..1011dc0a5 100644
--- a/trunk/paradiseo-peo/src/peoSynchronousMultiStart.h
+++ b/trunk/paradiseo-peo/src/peoSynchronousMultiStart.h
@@ -43,192 +43,227 @@
 
 
 template < typename EntityType > class peoSynchronousMultiStart : public Service
+{
+
+ public:
+
+  template < typename AlgorithmType > peoSynchronousMultiStart( AlgorithmType& externalAlgorithm )
   {
 
-  public:
+    singularAlgorithm = new Algorithm< AlgorithmType >( externalAlgorithm );
+    algorithms.push_back( singularAlgorithm );
 
-    template < typename AlgorithmType > peoSynchronousMultiStart( AlgorithmType& externalAlgorithm )
-    {
+    aggregationFunction = new NoAggregationFunction();
+  }
 
-      singularAlgorithm = new Algorithm< AlgorithmType >( externalAlgorithm );
-      algorithms.push_back( singularAlgorithm );
+  template < typename AlgorithmReturnType, typename AlgorithmDataType > peoSynchronousMultiStart( AlgorithmReturnType (*externalAlgorithm)( AlgorithmDataType& ) )
+  {
 
-      aggregationFunction = new NoAggregationFunction();
-    }
+    singularAlgorithm = new FunctionAlgorithm< AlgorithmReturnType, AlgorithmDataType >( externalAlgorithm );
+    algorithms.push_back( singularAlgorithm );
 
-    template < typename AlgorithmType, typename AggregationFunctionType > peoSynchronousMultiStart( std::vector< AlgorithmType* >& externalAlgorithms, AggregationFunctionType& externalAggregationFunction )
-    {
+    aggregationFunction = new NoAggregationFunction();
+  }
 
-      for ( unsigned int index = 0; index < externalAlgorithms; index++ )
-        {
+  template < typename AlgorithmType, typename AggregationFunctionType > peoSynchronousMultiStart( std::vector< AlgorithmType* >& externalAlgorithms, AggregationFunctionType& externalAggregationFunction )
+  {
 
-          algorithms.push_back( new Algorithm< AlgorithmType >( *externalAlgorithms[ index ] ) );
-        }
-
-      aggregationFunction = new Algorithm< AggregationFunctionType >( externalAggregationFunction );
-    }
-
-
-    ~peoSynchronousMultiStart()
-    {
-
-      for ( unsigned int index = 0; index < data.size(); index++ ) delete data[ index ];
-      for ( unsigned int index = 0; index < algorithms.size(); index++ ) delete algorithms[ index ];
-
-      delete aggregationFunction;
-    }
-
-
-    template < typename Type > void operator()( Type& externalData )
-    {
-
-      for ( typename Type::iterator externalDataIterator = externalData.begin(); externalDataIterator != externalData.end(); externalDataIterator++ )
-        {
-
-          data.push_back( new DataType< EntityType >( *externalDataIterator ) );
-        }
-
-      functionIndex = dataIndex = idx = num_term = 0;
-      requestResourceRequest( data.size() * algorithms.size() );
-      stop();
-    }
-
-
-    template < typename Type > void operator()( const Type& externalDataBegin, const Type& externalDataEnd )
-    {
-
-      for ( Type externalDataIterator = externalDataBegin; externalDataIterator != externalDataEnd; externalDataIterator++ )
-        {
-
-          data.push_back( new DataType< EntityType >( *externalDataIterator ) );
-        }
-
-      functionIndex = dataIndex = idx = num_term = 0;
-      requestResourceRequest( data.size() * algorithms.size() );
-      stop();
-    }
-
-
-    void packData();
-
-    void unpackData();
-
-    void execute();
-
-    void packResult();
-
-    void unpackResult();
-
-    void notifySendingData();
-
-    void notifySendingAllResourceRequests();
-
-
-  private:
-
-    template < typename Type > struct DataType;
-
-    struct AbstractDataType
+    for ( unsigned int index = 0; index < externalAlgorithms.size(); index++ )
       {
 
-        virtual ~AbstractDataType()
-        { }
+	algorithms.push_back( new Algorithm< AlgorithmType >( *externalAlgorithms[ index ] ) );
+      }
 
-        template < typename Type > operator Type& ()
-        {
+    aggregationFunction = new AggregationAlgorithm< AggregationFunctionType >( externalAggregationFunction );
+  }
 
-          return ( dynamic_cast< DataType< Type >& >( *this ) ).data;
-        }
-      };
+  template < typename AlgorithmReturnType, typename AlgorithmDataType, typename AggregationFunctionType > 
+    peoSynchronousMultiStart( std::vector< AlgorithmReturnType (*)( AlgorithmDataType& ) >& externalAlgorithms, 
+			      AggregationFunctionType& externalAggregationFunction )
+  {
+
+    for ( unsigned int index = 0; index < externalAlgorithms.size(); index++ )
+      {
+
+	algorithms.push_back( new FunctionAlgorithm< AlgorithmReturnType, AlgorithmDataType >( externalAlgorithms[ index ] ) );
+      }
+
+    aggregationFunction = new AggregationAlgorithm< AggregationFunctionType >( externalAggregationFunction );
+  }
+
+  ~peoSynchronousMultiStart()
+  {
+
+    for ( unsigned int index = 0; index < data.size(); index++ ) delete data[ index ];
+    for ( unsigned int index = 0; index < algorithms.size(); index++ ) delete algorithms[ index ];
+
+    delete aggregationFunction;
+  }
+
+
+  template < typename Type > void operator()( Type& externalData )
+  {
+
+    for ( typename Type::iterator externalDataIterator = externalData.begin(); externalDataIterator != externalData.end(); externalDataIterator++ )
+    {
+
+      data.push_back( new DataType< EntityType >( *externalDataIterator ) );
+    }
+
+    functionIndex = dataIndex = idx = num_term = 0;
+    requestResourceRequest( data.size() * algorithms.size() );
+    stop();
+  }
+
+
+  template < typename Type > void operator()( const Type& externalDataBegin, const Type& externalDataEnd )
+  {
+
+    for ( Type externalDataIterator = externalDataBegin; externalDataIterator != externalDataEnd; externalDataIterator++ )
+    {
+
+      data.push_back( new DataType< EntityType >( *externalDataIterator ) );
+    }
+
+    functionIndex = dataIndex = idx = num_term = 0;
+    requestResourceRequest( data.size() * algorithms.size() );
+    stop();
+  }
+
+
+  void packData();
+
+  void unpackData();
+
+  void execute();
+
+  void packResult();
+
+  void unpackResult();
+
+  void notifySendingData();
+
+  void notifySendingAllResourceRequests();
+
+
+ private:
+
+  template < typename Type > struct DataType;
+
+  struct AbstractDataType
+  {
+
+    virtual ~AbstractDataType()
+    { }
+
+    template < typename Type > operator Type& ()
+    {
+
+      return ( dynamic_cast< DataType< Type >& >( *this ) ).data;
+    }
+  };
 
   template < typename Type > struct DataType : public AbstractDataType
-      {
+  {
 
-        DataType( Type& externalData ) : data( externalData )
-        { }
+  DataType( Type& externalData ) : data( externalData )
+    { }
 
-        Type& data;
-      };
+    Type& data;
+  };
 
-    struct AbstractAlgorithm
-      {
+  struct AbstractAlgorithm
+  {
 
-        virtual ~AbstractAlgorithm()
-        { }
+    virtual ~AbstractAlgorithm()
+    { }
 
-        virtual void operator()( AbstractDataType& dataTypeInstance )
-        {}
-      };
+    virtual void operator()( AbstractDataType& dataTypeInstance )
+    {}
+  };
 
   template < typename AlgorithmType > struct Algorithm : public AbstractAlgorithm
-      {
+  {
 
-        Algorithm( AlgorithmType& externalAlgorithm ) : algorithm( externalAlgorithm )
-        { }
+    Algorithm( AlgorithmType& externalAlgorithm ) : algorithm( externalAlgorithm )
+      { }
 
-        void operator()( AbstractDataType& dataTypeInstance )
-        {
-          algorithm( dataTypeInstance );
-        }
+    void operator()( AbstractDataType& dataTypeInstance )
+    {
+      algorithm( dataTypeInstance );
+    }
 
-        AlgorithmType& algorithm;
-      };
+    AlgorithmType& algorithm;
+  };
 
 
+  template < typename AlgorithmReturnType, typename AlgorithmDataType > struct FunctionAlgorithm : public AbstractAlgorithm
+  {
 
-    struct AbstractAggregationAlgorithm
-      {
+    FunctionAlgorithm( AlgorithmReturnType (*externalAlgorithm)( AlgorithmDataType& ) ) : algorithm( externalAlgorithm )
+      { }
 
-        virtual ~AbstractAggregationAlgorithm()
-        { }
+    void operator()( AbstractDataType& dataTypeInstance )
+    {
+      algorithm( dataTypeInstance );
+    }
 
-        virtual void operator()( AbstractDataType& dataTypeInstanceA, AbstractDataType& dataTypeInstanceB )
-        {};
-      };
+    AlgorithmReturnType (*algorithm)( AlgorithmDataType& );
+  };
+
+  struct AbstractAggregationAlgorithm
+  {
+
+    virtual ~AbstractAggregationAlgorithm()
+    { }
+
+    virtual void operator()( AbstractDataType& dataTypeInstanceA, AbstractDataType& dataTypeInstanceB )
+    {};
+  };
 
   template < typename AggregationAlgorithmType > struct AggregationAlgorithm : public AbstractAggregationAlgorithm
-      {
+  { 
 
-        AggregationAlgorithm( AggregationAlgorithmType& externalAggregationAlgorithm ) : aggregationAlgorithm( externalAggregationAlgorithm )
-        { }
+    AggregationAlgorithm( AggregationAlgorithmType& externalAggregationAlgorithm ) : aggregationAlgorithm( externalAggregationAlgorithm )
+      { }
 
-        void operator()( AbstractDataType& dataTypeInstanceA, AbstractDataType& dataTypeInstanceB )
-        {
+    void operator()( AbstractDataType& dataTypeInstanceA, AbstractDataType& dataTypeInstanceB )
+    {
 
-          aggregationAlgorithm( dataTypeInstanceA, dataTypeInstanceB );
-        }
+      aggregationAlgorithm( dataTypeInstanceA, dataTypeInstanceB );
+    }
 
-        AggregationAlgorithmType& aggregationAlgorithm;
-      };
+    AggregationAlgorithmType& aggregationAlgorithm;
+  };
 
   struct NoAggregationFunction : public AbstractAggregationAlgorithm
-      {
+  {
 
-        void operator()( AbstractDataType& dataTypeInstanceA, AbstractDataType& dataTypeInstanceB )
-        {
+    void operator()( AbstractDataType& dataTypeInstanceA, AbstractDataType& dataTypeInstanceB )
+    {
 
-          static_cast< EntityType& >( dataTypeInstanceA ) = static_cast< EntityType& >( dataTypeInstanceB );
-        }
-      };
-
-
-
-    AbstractAlgorithm* singularAlgorithm;
-
-    std::vector< AbstractAlgorithm* > algorithms;
-    AbstractAggregationAlgorithm* aggregationFunction;
-
-
-    EntityType entityTypeInstance;
-    std::vector< AbstractDataType* > data;
-
-    unsigned idx;
-    unsigned num_term;
-    unsigned dataIndex;
-    unsigned functionIndex;
+      static_cast< EntityType& >( dataTypeInstanceA ) = static_cast< EntityType& >( dataTypeInstanceB );
+    }
   };
 
 
+
+  AbstractAlgorithm* singularAlgorithm;
+
+  std::vector< AbstractAlgorithm* > algorithms;
+  AbstractAggregationAlgorithm* aggregationFunction;
+
+
+  EntityType entityTypeInstance;
+  std::vector< AbstractDataType* > data;
+
+  unsigned idx;
+  unsigned num_term;
+  unsigned dataIndex;
+  unsigned functionIndex;
+};
+
+
 template < typename EntityType > void peoSynchronousMultiStart< EntityType >::packData()
 {
 
@@ -239,11 +274,11 @@ template < typename EntityType > void peoSynchronousMultiStart< EntityType >::pa
   // done with functionIndex for the entire data set - moving to another
   //  function/algorithm starting all over with the entire data set ( idx is set to 0 )
   if ( idx == data.size() )
-    {
+  {
 
-      ++functionIndex;
-      idx = 0;
-    }
+    ++functionIndex;
+    idx = 0;
+  }
 }
 
 template < typename EntityType > void peoSynchronousMultiStart< EntityType >::unpackData()
@@ -287,11 +322,11 @@ template < typename EntityType > void peoSynchronousMultiStart< EntityType >::un
   num_term++;
 
   if ( num_term == data.size() * algorithms.size() )
-    {
+  {
 
-      getOwner()->setActive();
-      resume();
-    }
+    getOwner()->setActive();
+    resume();
+  }
 }
 
 template < typename EntityType > void peoSynchronousMultiStart< EntityType >::notifySendingData()
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/comm.cpp b/trunk/paradiseo-peo/src/rmc/mpi/comm.cpp
index 23ab6c539..3b26de542 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/comm.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/comm.cpp
@@ -55,7 +55,8 @@ Communicator :: Communicator (int * __argc, char * * * __argv) {
 
   the_thread = this;  
   initNode  (__argc, __argv);
-  loadRMCParameters (* __argc, * __argv);  
+  loadRMCParameters (* __argc, * __argv);
+
   sem_post (& sem_comm_init);
 }
 
@@ -68,15 +69,18 @@ void Communicator :: start () {
 
     sendMessages ();
 
-    if (! atLeastOneActiveRunner ())     
+    if (theEnd() || ! atLeastOneActiveRunner ())     
       break;
 
     receiveMessages ();
   }
 
-  waitBuffers ();  
+  waitBuffers ();
+  sem_destroy(& sem_comm_init);
+
   printDebugMessage ("finalizing");
-  MPI_Finalize ();  
+
+  synchronizeNodes ();
 }
 
 void initCommunication () {
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/mess.cpp b/trunk/paradiseo-peo/src/rmc/mpi/mess.cpp
index 669eaae4d..a55cf4a29 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/mess.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/mess.cpp
@@ -54,18 +54,18 @@ static std :: vector <MPI_Request *> act_req; /* Active requests */
 void cleanBuffers () {
 
   for (unsigned i = 0; i < act_req.size ();) {
-       
+
     MPI_Status stat ;
     int flag ;
     MPI_Test (act_req [i], & flag, & stat) ;
     if (flag) {
-      
+
       delete[] act_buf [i] ;
       delete act_req [i] ;
 	
       act_buf [i] = act_buf.back () ;
       act_buf.pop_back () ;
-      
+
       act_req [i] = act_req.back () ;
       act_req.pop_back () ;
     }
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/mess.h b/trunk/paradiseo-peo/src/rmc/mpi/mess.h
index 83ae3998d..0b8264b9b 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/mess.h
+++ b/trunk/paradiseo-peo/src/rmc/mpi/mess.h
@@ -58,4 +58,3 @@ extern void waitMessage ();
 extern void synchronizeNodes ();
 
 #endif
-
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/node.cpp b/trunk/paradiseo-peo/src/rmc/mpi/node.cpp
index dcd156781..b989d228d 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/node.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/node.cpp
@@ -40,6 +40,52 @@
 #include <string>
 #include <cassert>
 
+
+class MPIThreadedEnv {
+
+public:
+
+  static void init ( int * __argc, char * * * __argv ) {
+
+    static MPIThreadedEnv mpiThreadedEnv( __argc, __argv );
+  }
+
+  static void finalize () {
+
+    static bool finalizedEnvironment = false;
+
+    if (! finalizedEnvironment ) {
+
+      MPI_Finalize ();
+      finalizedEnvironment = true;
+    }
+  }
+
+private:
+
+  /* No instance of this class can be created outside its domain */
+  MPIThreadedEnv ( int * __argc, char * * * __argv ) {
+
+    static bool MPIThreadedEnvInitialized = false;
+    int provided = 1;
+
+    if (! MPIThreadedEnvInitialized) {
+
+      MPI_Init_thread (__argc, __argv, MPI_THREAD_FUNNELED, & provided);  
+      assert (provided == MPI_THREAD_FUNNELED); /* The MPI implementation must be multi-threaded.
+					       Yet, only one thread performs the comm.
+					       operations */
+      MPIThreadedEnvInitialized = true;
+    }
+  }
+
+  ~MPIThreadedEnv() {
+
+    finalize ();
+  }
+};
+
+
 static int rk, sz; /* Rank & size */
 
 static std :: map <std :: string, int> name_to_rk;
@@ -57,17 +103,19 @@ int getNumberOfNodes () {
 }
 
 int getRankFromName (const std :: string & __name) {
-  
+
   return atoi (__name.c_str ());  
 }
 
 void initNode (int * __argc, char * * * __argv) {
-  
-  int provided;
-  MPI_Init_thread (__argc,  __argv, MPI_THREAD_FUNNELED, & provided);  
-  assert (provided == MPI_THREAD_FUNNELED); /* The MPI implementation must be multi-threaded.
-					       Yet, only one thread performs the comm.
-					       operations */
+
+  rk_to_name.clear ();
+  name_to_rk.clear ();
+
+
+  MPIThreadedEnv :: init ( __argc, __argv );
+
+
   MPI_Comm_rank (MPI_COMM_WORLD, & rk);   /* Who ? */
   MPI_Comm_size (MPI_COMM_WORLD, & sz);    /* How many ? */
 
@@ -77,10 +125,9 @@ void initNode (int * __argc, char * * * __argv) {
   /* Processor names */ 
   MPI_Get_processor_name (names [0], & len);   /* Me */  
   MPI_Allgather (names, MPI_MAX_PROCESSOR_NAME, MPI_CHAR, names, MPI_MAX_PROCESSOR_NAME, MPI_CHAR, MPI_COMM_WORLD); /* Broadcast */
-  
+
   for (int i = 0; i < sz; i ++) {
     rk_to_name.push_back (names [i]);
     name_to_rk [names [i]] = i;
   }
 }
-
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/rmc.cpp b/trunk/paradiseo-peo/src/rmc/mpi/rmc.cpp
index 21473a057..9d846dd47 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/rmc.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/rmc.cpp
@@ -42,12 +42,16 @@
 #include "../../core/peo_debug.h"
 
 static std :: vector <pthread_t *> ll_threads; /* Low level threads */
+static std :: vector <Worker *> worker_threads; /* Worker threads */
+static Communicator* communicator_thread = NULL; /* Communicator thread */
 
 void runRMC () {
 
   /* Worker(s) ? */
-  for (unsigned i = 0; i < my_node -> num_workers; i ++) 
-    addThread (new Worker, ll_threads);
+  for (unsigned i = 0; i < my_node -> num_workers; i ++) {
+    worker_threads.push_back (new Worker);
+    addThread (worker_threads.back(), ll_threads);
+  }
 
   wakeUpCommunicator ();
 }
@@ -56,20 +60,26 @@ void initRMC (int & __argc, char * * & __argv) {
 
   /* Communication */
   initCommunication ();
-  addThread (new Communicator (& __argc, & __argv), ll_threads);
+  communicator_thread = new Communicator (& __argc, & __argv);
+  addThread (communicator_thread, ll_threads);
   waitNodeInitialization ();
   initSending ();
 
   /* Scheduler */
   if (isScheduleNode ())
     initScheduler ();
-
-  ///
 }
 
 void finalizeRMC () {
 
   printDebugMessage ("before join threads RMC");
+
   joinThreads (ll_threads);
+  for (unsigned i = 0; i < worker_threads.size(); i++ ) {
+    delete worker_threads [i];
+  }
+  worker_threads.clear ();
+  delete communicator_thread;
+
   printDebugMessage ("after join threads RMC");
 }
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/scheduler.cpp b/trunk/paradiseo-peo/src/rmc/mpi/scheduler.cpp
index aef662050..6f7837b3e 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/scheduler.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/scheduler.cpp
@@ -48,11 +48,15 @@ static std :: queue <SCHED_REQUEST> requests; /* Requests */
 static unsigned initNumberOfRes = 0;
 
 void initScheduler () {
-  
+
+  resources = std :: queue <SCHED_RESOURCE> ();
+  requests = std :: queue <SCHED_REQUEST> ();
+  initNumberOfRes = 0;
+
   for (unsigned i = 0; i < the_schema.size (); i ++) {
-    
+
     const Node & node = the_schema [i];
-    
+
     if (node.rk_sched == my_node -> rk)      
       for (unsigned j = 0; j < node.num_workers; j ++)
 	resources.push (std :: pair <RANK_ID, WORKER_ID> (i, j + 1));    
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/schema.cpp b/trunk/paradiseo-peo/src/rmc/mpi/schema.cpp
index 3fc02840e..f7f98d47b 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/schema.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/schema.cpp
@@ -34,9 +34,8 @@
 *
 */
 
-#include <iostream>
 #include <set>
-#include <assert.h>
+#include <cassert>
 
 #include "schema.h"
 #include "xml_parser.h"
@@ -131,9 +130,9 @@ void loadSchema (const char * __filename) {
   name = getNextNode ();
   assert (name == "schema");
 
+  the_schema.clear();
   maxSpecifiedRunnerID = 0;
 
-
   while (true) {
 
     /* TAG: <group> | </schema> */
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/schema.h b/trunk/paradiseo-peo/src/rmc/mpi/schema.h
index 57604e876..6feabadc7 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/schema.h
+++ b/trunk/paradiseo-peo/src/rmc/mpi/schema.h
@@ -43,6 +43,7 @@
 
 #include "../../core/runner.h"
 
+
 typedef int RANK_ID;
 
 struct Node {
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/send.cpp b/trunk/paradiseo-peo/src/rmc/mpi/send.cpp
index 303953430..03bc31c19 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/send.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/send.cpp
@@ -61,9 +61,24 @@ static std :: queue <SEND_REQUEST> mess;
 
 static sem_t sem_send;
 
+static bool contextInitialized = false;
+
 void initSending () {
 
-  sem_init (& sem_send, 0, 1);
+  static bool initializedSem = false;
+
+  mess = std :: queue <SEND_REQUEST> ();
+
+  if (! initializedSem) {
+    sem_init (& sem_send, 0, 1);
+    initializedSem = true;
+  }
+  else {
+    sem_destroy(& sem_send);
+    sem_init (& sem_send, 0, 1);
+  }
+
+  contextInitialized = false;
 }
 
 void send (Communicable * __comm, int __to, int __tag) {
@@ -90,17 +105,15 @@ void sendMessages () {
 
   sem_wait (& sem_send);
 
-  static bool contextInitialized = false;
-
   if (! contextInitialized) {
     contextInitialized = true;
     initializeContext();
   }
 
   while (! mess.empty ()) {
-    
+
     SEND_REQUEST req = mess.front ();
-    
+
     Communicable * comm = req.comm;
 
     initMessage ();
@@ -131,12 +144,12 @@ void sendMessages () {
       dynamic_cast <Worker *> (comm) -> packTaskDone ();
       dynamic_cast <Worker *> (comm) -> notifySendingTaskDone ();
       break;
-      
+
     default :
       break;
 
     };
-    
+
     if (req.to == TO_ALL)
       sendMessageToAll (req.tag);
     else
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/service.cpp b/trunk/paradiseo-peo/src/rmc/mpi/service.cpp
index f26f70b3d..df2556426 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/service.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/service.cpp
@@ -53,6 +53,6 @@ void Service :: packResourceRequest () {
   SCHED_REQUEST req;
   req.first = getNodeRank ();
   req.second = getKey ();
-  //  printf ("demande de ressource pour %d\n", req.second);
+
   :: pack (req);
 }
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/tags.h b/trunk/paradiseo-peo/src/rmc/mpi/tags.h
index 4325e6a51..92d5ac1a2 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/tags.h
+++ b/trunk/paradiseo-peo/src/rmc/mpi/tags.h
@@ -37,18 +37,17 @@
 #ifndef __tags_h
 #define __tags_h
 
-#define EXECUTION_CONTEXT_TAG 1000
-
 #define RUNNER_STOP_TAG 13
 
 #define COOP_TAG 14
 
 #define SCHED_REQUEST_TAG 16
-
 #define SCHED_RESULT_TAG 17
-#define TASK_DATA_TAG 18
 
+#define TASK_DATA_TAG 18
 #define TASK_RESULT_TAG 19
 #define TASK_DONE_TAG 20
 
+#define EXECUTION_CONTEXT_TAG 1000
+
 #endif
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/worker.cpp b/trunk/paradiseo-peo/src/rmc/mpi/worker.cpp
index 53ad72925..0dc242389 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/worker.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/worker.cpp
@@ -53,7 +53,7 @@ Worker * getWorker (WORKER_ID __key) {
 
 Worker :: Worker () {
   
-  toto = false;
+  recvAndCompleted = false;
   id = key_to_worker.size ();
   key_to_worker.push_back (this);
 }
@@ -84,7 +84,7 @@ void Worker :: packTaskDone () {
 void Worker :: notifySendingResult () {
 
   /* Notifying the scheduler of the termination */
-  toto = true;
+  recvAndCompleted = true;
   wakeUp ();
 }
 
@@ -101,15 +101,15 @@ void Worker :: setSource (int __rank) {
 void Worker :: start () {
 
   while (true) {
-    
+
     sleep (); 
 
     if (! atLeastOneActiveRunner ())
       break;
-    
-    if (toto) {
+
+    if (recvAndCompleted) {
       send (this, my_node -> rk_sched, TASK_DONE_TAG);  
-      toto = false;
+      recvAndCompleted = false;
     }
     else {
 
@@ -119,3 +119,8 @@ void Worker :: start () {
     }
   }
 }
+
+void initWorkersEnv () {
+
+  key_to_worker.resize (1);
+}
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/worker.h b/trunk/paradiseo-peo/src/rmc/mpi/worker.h
index 43c4ec62c..709a10584 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/worker.h
+++ b/trunk/paradiseo-peo/src/rmc/mpi/worker.h
@@ -41,6 +41,7 @@
 #include "../../core/reac_thread.h"
 #include "../../core/service.h"
 
+
 typedef unsigned WORKER_ID; 
 
 class Worker : public Communicable, public ReactiveThread {
@@ -70,9 +71,11 @@ private :
   Service * serv;
   int src;
 
-  bool toto;
+  bool recvAndCompleted;
 };
 
+extern void initWorkersEnv ();
+
 extern Worker * getWorker (WORKER_ID __key);
 
 #endif
diff --git a/trunk/paradiseo-peo/src/rmc/mpi/xml_parser.cpp b/trunk/paradiseo-peo/src/rmc/mpi/xml_parser.cpp
index 1f044ba90..706468cba 100644
--- a/trunk/paradiseo-peo/src/rmc/mpi/xml_parser.cpp
+++ b/trunk/paradiseo-peo/src/rmc/mpi/xml_parser.cpp
@@ -83,7 +83,6 @@ std :: string getNextNode () {
     xmlTextReaderRead (reader);
     name = xmlTextReaderName (reader);
     value = xmlTextReaderValue (reader);
-    //    printf ("value = %s\n", value);
   } while (! strcmp ((char *) name, "#text") && isSep (value));
 
   std :: string str;