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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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* (C) 2001 by Argonne National Laboratory.
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* See COPYRIGHT in top-level directory.
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*/
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#include <stdio.h>
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#include "mpi.h"
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int main(int argc, char *argv[])
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{
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MPI_Comm intercomm;
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char str[10];
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int err, rank;
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MPI_Init(&argc, &argv);
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MPI_Comm_rank(MPI_COMM_WORLD, &rank;;
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MPI_Comm_get_parent(&intercomm);
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if (rank == 3) {
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err = MPI_Send("hi", 3, MPI_CHAR, 3, 0, intercomm);
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err = MPI_Recv(str, 4, MPI_CHAR, 3, 0, intercomm, MPI_STATUS_IGNORE);
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printf("Child received from parent: %s\n", str);
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fflush(stdout);
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}
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MPI_Finalize();
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return 0;
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}
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