count_MPI.c

#include "stddef.h"
#include "mpi.h"
#include "stdio.h"

#define LIMITE 10

int count = 0;


void main(int argc, char *argv[]){
	int rank, size, type = 99;
	MPI_Status status;
	MPI_Init(&argc, &argv);
	MPI_Comm_size(MPI_COMM_WORLD, &size);
	MPI_Comm_rank(MPI_COMM_WORLD, &rank);

    printf("Começou %d\n" rank);
    int partner = 1 - rank;
	while(count < LIMITE){

        if(rank == count % 2){
            count++;
            MPI_Send(&count, 1, MPI_INT, partner, 0, MPI_COMM_WORLD);
            printf("processo %d inrementou count para %d", rank, count);

        } else {
            MPI_Recv(&count, 1, MPI_INT, partner, 0, MPI_COMM_WORLD, &status);
            printf("processo %d recebeu count com valor %d", rank, count);
        }
	}
	printf("fianlizou");
	MPI_Finalize();
}