added initial files coming from the trunk (r=920) for the branch 2.0

git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@921 331e1502-861f-0410-8da2-ba01fb791d7f

branches/paradiseo-ix86-2.0/paradiseo-peo/tutorial/Lesson1/mainPSO.cpp

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+/*
+* <main.cpp>
+* Copyright (C) DOLPHIN Project-Team, INRIA Futurs, 2006-2007
+* (C) OPAC Team, INRIA, 2007
+*
+* Clive Canape
+*
+* This software is governed by the CeCILL license under French law and
+* abiding by the rules of distribution of free software.  You can  use,
+* modify and/ or redistribute the software under the terms of the CeCILL
+* license as circulated by CEA, CNRS and INRIA at the following URL
+* "http://www.cecill.info".
+*
+* As a counterpart to the access to the source code and  rights to copy,
+* modify and redistribute granted by the license, users are provided only
+* with a limited warranty  and the software's author,  the holder of the
+* economic rights,  and the successive licensors  have only  limited liability.
+*
+* In this respect, the user's attention is drawn to the risks associated
+* with loading,  using,  modifying and/or developing or reproducing the
+* software by the user in light of its specific status of free software,
+* that may mean  that it is complicated to manipulate,  and  that  also
+* therefore means  that it is reserved for developers  and  experienced
+* professionals having in-depth computer knowledge. Users are therefore
+* encouraged to load and test the software's suitability as regards their
+* requirements in conditions enabling the security of their systems and/or
+* data to be ensured and,  more generally, to use and operate it in the
+* same conditions as regards security.
+* The fact that you are presently reading this means that you have had
+* knowledge of the CeCILL license and that you accept its terms.
+*
+* ParadisEO WebSite : http://paradiseo.gforge.inria.fr
+* Contact: paradiseo-help@lists.gforge.inria.fr
+*
+*/
+
+#include <peo>
+
+typedef eoRealParticle < double >Indi;
+
+//Evaluation function
+
+double f (const Indi & _indi)
+{
+  // Rosenbrock function f(x) = 100*(x[1]-x[0]^2)^2+(1-x[0])^2
+  // => optimal : f* = 0 , with x* =(1,1)
+
+  double sum;
+  sum=_indi[1]-pow(_indi[0],2);
+  sum=100*pow(sum,2);
+  sum+=pow((1-_indi[0]),2);
+  return (-sum);
+}
+
+int main (int __argc, char *__argv[])
+{
+
+
+// Initialization of the parallel environment : thanks this instruction, ParadisEO-PEO can initialize himself
+  peo :: init( __argc, __argv );
+
+//Parameters
+
+  const unsigned int VEC_SIZE = 2;  // Don't change this parameter when you are resolving the Rosenbrock function
+
+  const unsigned int POP_SIZE = 20; // As with a sequential algorithm, you change the size of the population
+
+  const unsigned int NEIGHBORHOOD_SIZE= 6; // This parameter define the neighborhoods in the PSO's topology
+
+  const unsigned int MAX_GEN = 150; // Define the number of maximal generation
+
+  const double INIT_POSITION_MIN = -2.0;  // For initialize x
+  const double INIT_POSITION_MAX = 2.0;   // In the case of the Rosenbrock function : -2 < x[i] < 2
+  const double INIT_VELOCITY_MIN = -1.;
+  const double INIT_VELOCITY_MAX = 1.;
+  const double weight = 1;
+  const double C1 = 0.5;
+  const double C2 = 2.;
+  rng.reseed (time(0));
+
+// Stopping
+  eoGenContinue < Indi > genContPara (MAX_GEN);
+  eoCombinedContinue <Indi> continuatorPara (genContPara);
+  eoCheckPoint<Indi> checkpoint(continuatorPara);
+
+
+// For a parallel evaluation
+  peoEvalFunc<Indi, double, const Indi& > plainEval(f);
+  peoPopEval< Indi > eval(plainEval);
+
+// Initialization
+  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);
+
+// Creation of the population
+  eoPop < Indi > pop;
+  pop.append (POP_SIZE, random);
+
+// Topology (ie Lesson 6 of ParadisEO-PEO)
+  eoLinearTopology<Indi> topology(NEIGHBORHOOD_SIZE);
+  eoRealVectorBounds bnds(VEC_SIZE,INIT_VELOCITY_MIN,INIT_VELOCITY_MAX);
+  eoStandardVelocity < Indi > velocity (topology,weight,C1,C2,bnds);
+
+// Initialization
+  eoInitializer <Indi> init(eval,veloRandom,localInit,topology,pop);
+
+//Parallel algorithm
+  eoSyncEasyPSO <Indi> psa(init,checkpoint,eval, velocity, flight);
+  peoWrapper parallelPSO( psa, pop);
+  eval.setOwner(parallelPSO);
+
+  peo :: run();
+  peo :: finalize();
+  if (getNodeRank()==1)
+    {
+      pop.sort();
+      std::cout << "Final population :\n" << pop << std::endl;
+    }
+}