Created
January 22, 2016 22:15
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#include <mpi.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
int main(int argc, char* argv[]) { | |
MPI_Init(NULL, NULL); | |
int rank; | |
MPI_Comm_rank(MPI_COMM_WORLD, &rank); | |
int size; | |
MPI_Comm_size(MPI_COMM_WORLD, &size); | |
int token; | |
if (rank != 0) { | |
MPI_Recv(&token, 1, MPI_INT, rank - 1, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE); | |
printf("P%d recebeu token %d de P%d\n", rank, token, rank - 1); | |
} else { | |
token = -1; | |
} | |
MPI_Send(&token, 1, MPI_INT, (rank + 1) % size, 0, MPI_COMM_WORLD); | |
if (rank == 0) { | |
MPI_Recv(&token, 1, MPI_INT, size - 1, 0, MPI_COMM_WORLD, MPI_STATUS_IGNORE); | |
printf("P%d recebeu token %d de P%d\n", rank, token, size - 1); | |
} | |
MPI_Finalize(); | |
} | |
// mpicc -o anel anel.c | |
// mpirun -n 2 ./anel |
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