5 * MESSAGE PASSING INTERFACE TEST CASE SUITE
7 * Copyright IBM Corp. 1995
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13 * IBM Corp. makes no representation that the test cases comprising this
14 * suite are correct or are an accurate representation of any standard.
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18 * even if IBM Corp. has been advised of the possibility of such damage.
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21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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25 * ***************************************************************************
27 static int ibm_test(int rank, int size)
32 int root = 0, i, j, k;
36 for (j = 1; j <= MAXLEN; j *= 10) {
37 for (i = 0; i < j; i++)
40 MPI_Allreduce(out, in, j, MPI_INT, MPI_SUM, MPI_COMM_WORLD);
41 MPI_Barrier(MPI_COMM_WORLD);
44 for (k = 0; k < j; k++) {
45 if (in[k] != k * size) {
46 printf("bad answer (%d) at index %d of %d (should be %d)", in[k], k,
60 int main(int argc, char **argv)
65 MPI_Init(&argc, &argv);
66 MPI_Comm_size(MPI_COMM_WORLD, &size);
67 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
71 printf("** IBM Test Result: ... \n");
72 if (!ibm_test(rank, size))
73 printf("\t[%d] failed.\n", rank);
75 printf("\t[%d] ok.\n", rank);