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/*
* Copyright (C) by Argonne National Laboratory
* See COPYRIGHT in top-level directory
*/
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"
void addem(int *, int *, int *, MPI_Datatype *);
void addem(int *invec, int *inoutvec, int *len, MPI_Datatype * dtype)
{
int i;
for (i = 0; i < *len; i++)
inoutvec[i] += invec[i];
}
int main(int argc, char **argv)
{
int rank, size, i;
int data;
int errors = 0;
int result = -100;
int correct_result;
MPI_Op op;
MTest_Init(&argc, &argv);
MPI_Comm_rank(MPI_COMM_WORLD, &rank);
MPI_Comm_size(MPI_COMM_WORLD, &size);
data = rank;
MPI_Op_create((MPI_User_function *) addem, 1, &op);
MPI_Reduce(&data, &result, 1, MPI_INT, op, 0, MPI_COMM_WORLD);
MPI_Bcast(&result, 1, MPI_INT, 0, MPI_COMM_WORLD);
MPI_Op_free(&op);
correct_result = 0;
for (i = 0; i < size; i++)
correct_result += i;
if (result != correct_result)
errors++;
MTest_Finalize(errors);
return MTestReturnValue(errors);
}
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