diff --git a/trunk/paradiseo-peo/tutorial/Lesson4/CMakeLists.txt b/trunk/paradiseo-peo/tutorial/Lesson4/CMakeLists.txt
new file mode 100644
index 000000000..7a4ac3edc
--- /dev/null
+++ b/trunk/paradiseo-peo/tutorial/Lesson4/CMakeLists.txt
@@ -0,0 +1,98 @@
+
+######################################################################################
+### 0) Set the compiler and define targets to easily run the lessons
+######################################################################################
+
+SET (CMAKE_CXX_COMPILER mpicxx)
+
+ADD_CUSTOM_TARGET(install DEPENDS ${ParadisEO-PEO_SOURCE_DIR}/tutorial/Lesson4/lesson.param ${ParadisEO-PEO_SOURCE_DIR}/tutorial/Lesson4/schema.xml)
+
+ADD_CUSTOM_COMMAND(
+    TARGET install
+    POST_BUILD
+    COMMAND ${CMAKE_COMMAND}
+    ARGS -E copy_if_different
+      ${ParadisEO-PEO_SOURCE_DIR}/tutorial/Lesson4/lesson.param
+      ${ParadisEO-PEO_BINARY_DIR}/tutorial/Lesson4)
+ADD_CUSTOM_COMMAND(
+    TARGET install
+    POST_BUILD
+    COMMAND ${CMAKE_COMMAND}
+    ARGS -E copy_if_different
+      ${ParadisEO-PEO_SOURCE_DIR}/tutorial/Lesson4/schema.xml
+      ${ParadisEO-PEO_BINARY_DIR}/tutorial/Lesson4)
+######################################################################################
+
+
+######################################################################################
+### 1) Include the sources
+######################################################################################
+
+INCLUDE_DIRECTORIES(${EO_SRC_DIR}/src ${MO_SRC_DIR}/src ${ParadisEO-PEO_SOURCE_DIR}/src) 
+
+######################################################################################
+
+
+######################################################################################
+### 2) Specify where CMake can find the libraries
+######################################################################################
+
+IF(NOT WIN32 OR CYGWIN)  
+  LINK_DIRECTORIES(${EO_BIN_DIR}/lib ${ParadisEO-PEO_BINARY_DIR}/lib) 
+ENDIF(NOT WIN32 OR CYGWIN)
+
+# especially for Visual Studio
+IF(WIN32 AND NOT CYGWIN)  
+  	LINK_DIRECTORIES(${EO_BIN_DIR}\\lib\\${CMAKE_BUILD_TYPE} ${ParadisEO-PEO_BINARY_DIR}\\lib\\${CMAKE_BUILD_TYPE})
+ENDIF(WIN32 AND NOT CYGWIN) 
+######################################################################################
+
+
+######################################################################################
+### 3) Define your target(s): just an executable here
+######################################################################################
+
+ADD_EXECUTABLE(psoExample main.cpp) 
+ADD_DEPENDENCIES(psoExample peo rmc_mpi)
+######################################################################################
+
+
+######################################################################################
+### 4) Optionnal: define properties
+######################################################################################
+
+SET(LESSON4_VERSION ${GLOBAL_VERSION})
+SET_TARGET_PROPERTIES(psoExample PROPERTIES VERSION "${LESSON4_VERSION}")
+######################################################################################
+
+
+######################################################################################
+### 5) Link the librairies
+######################################################################################
+
+TARGET_LINK_LIBRARIES(psoExample ${XML2_LIBS} peo rmc_mpi eo eoutils) 
+
+######################################################################################
+
+
+######################################################################################
+### 6) Windows advanced config - especially for Microsoft Visual Studio 8
+######################################################################################
+
+  IF(CMAKE_CXX_COMPILER MATCHES cl)
+   IF(NOT WITH_SHARED_LIBS)
+     IF(CMAKE_GENERATOR STREQUAL "Visual Studio 8 2005")
+       SET(CMAKE_CXX_FLAGS "/nologo /W3 /Gy")
+       SET(CMAKE_CXX_FLAGS_DEBUG "/MTd /Z7 /Od")
+       SET(CMAKE_CXX_FLAGS_RELEASE "/MT /O2")
+       SET(CMAKE_CXX_FLAGS_MINSIZEREL "/MT /O2")
+       SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "/MTd /Z7 /Od")
+       SET(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} /SUBSYSTEM:CONSOLE")
+       
+     ENDIF(CMAKE_GENERATOR STREQUAL "Visual Studio 8 2005")
+   ENDIF(NOT WITH_SHARED_LIBS)
+  ENDIF(CMAKE_CXX_COMPILER MATCHES cl)
+######################################################################################
+
+
+
diff --git a/trunk/paradiseo-peo/tutorial/Lesson4/lesson.param b/trunk/paradiseo-peo/tutorial/Lesson4/lesson.param
new file mode 100644
index 000000000..6ba37c292
--- /dev/null
+++ b/trunk/paradiseo-peo/tutorial/Lesson4/lesson.param
@@ -0,0 +1,7 @@
+## miscallenous parameters
+
+--debug=false
+
+## deployment schema
+
+--schema=schema.xml
\ No newline at end of file
diff --git a/trunk/paradiseo-peo/tutorial/Lesson4/main.cpp b/trunk/paradiseo-peo/tutorial/Lesson4/main.cpp
new file mode 100644
index 000000000..f32fe8254
--- /dev/null
+++ b/trunk/paradiseo-peo/tutorial/Lesson4/main.cpp
@@ -0,0 +1,90 @@
+//For define a parallel PSO or a sequential PSO
+#define PARA
+
+#include <peo>
+
+typedef eoRealParticle < double >Indi;
+//Evaluation function
+
+double f (const Indi & _indi)
+{  
+    //Levy function f* = -21.502356 x=(1,1,1,-9.752356 ) for size = 4
+    
+    const double PI = 4.0 * atan(1.0);
+    double sum=0.;
+    for (unsigned i = 0; i < _indi.size()-1; i++)
+    	sum+=pow((_indi[i]-1),2)*(1+pow(sin(3*PI*_indi[i+1]),2));
+    sum+=pow(sin(3*PI*_indi[0]),2);
+    sum+=(_indi[_indi.size()-1]-1)*(1+pow(sin(2*PI*_indi[_indi.size()-1]),2));
+    return (-sum);
+}
+
+int main (int __argc, char *__argv[])
+{
+
+#ifdef PARA 
+//Initialization
+  peo :: init( __argc, __argv );
+#endif
+//Parameters
+    const unsigned int VEC_SIZE = 4;        
+    const unsigned int POP_SIZE = 20;        
+    const unsigned int NEIGHBORHOOD_SIZE= 5; 
+    const unsigned int MAX_GEN = 500;
+    const double INIT_POSITION_MIN = -10.0;
+    const double INIT_POSITION_MAX = 1.0;
+    const double INIT_VELOCITY_MIN = -1;
+    const double INIT_VELOCITY_MAX = 1;
+    const double C1 = 0.5; 
+    const double C2 = 2;
+    rng.reseed (time(0));
+#ifndef PARA 
+	eoEvalFuncPtr<Indi, double, const Indi& > plainEval(f);
+    eoEvalFuncCounter < Indi > eval (plainEval);
+#else
+	peoEvalFuncPSO<Indi, double, const Indi& > plainEval(f);
+    eoEvalFuncCounter < Indi > evalSeq (plainEval);
+    peoParaPopEval< Indi > eval(plainEval);                
+#endif
+    eoUniformGenerator < double >uGen (INIT_POSITION_MIN, INIT_POSITION_MAX);
+    eoInitFixedLength < Indi > random (VEC_SIZE, uGen);
+//Velocity
+    eoUniformGenerator < double >sGen (INIT_VELOCITY_MIN, INIT_VELOCITY_MAX);
+    eoVelocityInitFixedLength < Indi > veloRandom (VEC_SIZE, sGen);
+//Initializing the best
+    eoFirstIsBestInit < Indi > localInit;
+//Flight
+    eoRealVectorBounds bndsFlight(VEC_SIZE,INIT_POSITION_MIN,INIT_POSITION_MAX);
+    eoStandardFlight < Indi > flight(bndsFlight);        
+    eoPop < Indi > pop;
+    pop.append (POP_SIZE, random);    
+#ifndef PARA 
+    apply(eval, pop);
+#else
+//The first evaluation must be sequential
+    apply(evalSeq, pop);
+#endif
+    apply < Indi > (veloRandom, pop);
+    apply < Indi > (localInit, pop);
+//Topology
+    eoLinearTopology<Indi> topology(NEIGHBORHOOD_SIZE);
+    topology.setup(pop);
+    eoRealVectorBounds bnds(VEC_SIZE,INIT_VELOCITY_MIN,INIT_VELOCITY_MAX);
+    eoStandardVelocity < Indi > velocity (topology,C1,C2,bnds);
+    eoGenContinue < Indi > genContPara (MAX_GEN);
+    eoCombinedContinue <Indi> continuatorPara (genContPara);
+    eoCheckPoint<Indi> checkpoint(continuatorPara);
+#ifndef PARA
+//Sequential algorithm
+    eoSyncEasyPSO < Indi > psa(checkpoint, eval, velocity, flight);
+    psa (pop); 
+    pop.sort (); 
+#else
+//Parallel algorithm
+    peoPSO < Indi > psa(checkpoint, eval, velocity, flight);
+    psa(pop);    
+    peo :: run(); 
+    peo :: finalize();
+#endif
+    std::cout << "Population finale :\n" << pop << std::endl;
+}
diff --git a/trunk/paradiseo-peo/tutorial/Lesson4/schema.xml b/trunk/paradiseo-peo/tutorial/Lesson4/schema.xml
new file mode 100644
index 000000000..9b8bf316c
--- /dev/null
+++ b/trunk/paradiseo-peo/tutorial/Lesson4/schema.xml
@@ -0,0 +1,19 @@
+<?xml version="1.0"?>
+
+<schema>
+	<group scheduler="0">
+		<node name="0" num_workers="0">
+		</node>
+		
+		<node name="1" num_workers="0">
+		<runner>1</runner>
+		<runner>2</runner>
+		</node>
+		
+		<node name="2" num_workers="1">
+		</node>
+		<node name="3" num_workers="1">
+		</node>
+	</group>
+</schema>
+