Yes you're right. the slave never enter the function GA() and Objective1(), thanks for your help. Is anybody can help me on giving some advice or idea on how im gonna call the slave in function Objective1() ? because in my program, main() only for master.

On 3/28/07, Elie Choueiri <elie.choueiri@gmail.com> wrote:

Hello.
I'm not very familiar with the C++ calls, but some points to watch out for over a quick scan of the code:

1) Do the slaves ever call MPI::Finalize(); ?
2) Do the slaves ever enter ga() or Objective1(); ? main() only has the master doing anything..

On 3/28/07, Muhammad Faiz Misman <faizmisman@gmail.com> wrote:

Hi. now im doing parallel GA for my final project using C++. But now im having a problem with my program. when im running my program this kind of error happened :

One of the processes started by mpirun has exited with a nonzero exit
code.  This typically indicates that the process finished in error.
If your process did not finish in error, be sure to include a "return
0 " or "exit(0)" in your C code before exiting the application.

PID 26349 failed on node n0 (10.1.1.1) due to signal 13 .

I hope there is someone can help me explain whats wrong with my program and whats the maeaning by signal 13. Thanks

Here is algorithm of my program (most of my parallel program at function Objective1) :

.............................................................................................................................................................................................................

int main (argc, argv) { //all in main is master part

MPI::Init(argc, argv);

master = id = 0;

if (id == master) {

ga(); //calling the function GA

MPI::Finalize();

} //end master

} // end main
.
.
.
void ga(); {
.
.
.
float Objective1();

} //function ga

void svm_train(); //function svm_train

float Objective1(); float Objective1(GAGenome& g)
{
 
  int p, id, slave;
  int master = 0;
  int tag = 15;
  MPI::Status status;
 
  id = MPI::COMM_WORLD.Get_rank();
   p = MPI::COMM_WORLD.Get_size();

  MPI::Request send[p], recv[p];

  GA1DBinaryStringGenome & genome = (GA1DBinaryStringGenome &)g;
  fstream file_index(indexf,ios::trunc|ios::in|ios::out);//create file for index output
  double score=0.0;

  if (id == master) {

    if(!file_index)
    {
        cerr << "Cannot open index1 file  " << file_index << " for input.\n";
        exit(1);
    }

    cout<<"chromosome value "<<++bilang<<": ";
        for (int i=0; i<genome.length(); i++)
    {
            cout<<(genome.gene(i));
            file_index<<( genome.gene(i));
    }
              cout<<" ";
              file_index<<endl;
              file_index.close();

    for (slave = 1; slave < p; slave++) {
           //cout<<"sending to slave "<<slave<<" from "<<id<<endl;
       send[slave] = MPI::COMM_WORLD.Isend(&indexf, 1, MPI::CHAR, bilang, tag);
       send[slave] = MPI::COMM_WORLD.Isend(&file_index, 1, MPI::CHAR, bilang, tag);

    }//end for

    }//end master
    else {

    recv[slave] = MPI::COMM_WORLD.Irecv(&indexf, 1, MPI::CHAR, master, tag);
    recv[slave] = MPI::COMM_WORLD.Irecv(&file_index, 1, MPI::CHAR, master, tag);

      featureselection_train();  //select features (genes) from s2AMLALL_train.fs.data
      featureselection_test();  //select features (genes) from s2AMLALL_test.fs.data
      svm_train();

    send[slave] = MPI::COMM_WORLD.Isend(&cvscore, 1, MPI::DOUBLE, master, tag);

    }//end slaves

    if (id == master) {

    for (slave = 1; slave < bilang; slave++) {
    recv[slave] = MPI::COMM_WORLD.Irecv(&cvscore, 1, MPI::CHAR, slave, tag);

    }//end for

    //MPI::Request::Waitall(p, recv);

      //svm__test();
      //score=testscore;
      cout<<"  cvs in fitness: "<<cvscore<<" "<<endl;

    score=cvscore;

    }//end master

      return score;
  }

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