5 * MESSAGE PASSING INTERFACE TEST CASE SUITE
7 * Copyright IBM Corp. 1995
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11 *above copyright notice and the following paragraphs appear in all copies.
13 * IBM Corp. makes no representation that the test cases comprising this
14 * suite are correct or are an accurate representation of any standard.
16 * In no event shall IBM be liable to any party for direct, indirect, special
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18 * even if IBM Corp. has been advised of the possibility of such damage.
20 * IBM CORP. SPECIFICALLY DISCLAIMS ANY WARRANTIES INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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25 * ***************************************************************************
27 int ibm_test( int rank, int size ) {
36 for(j=1;j<=MAXLEN;j*=10) {
37 for(i=0;i<j;i++) out[i] = i;
39 MPI_Reduce(out,in,j,MPI_INT,MPI_SUM,root,MPI_COMM_WORLD);
44 printf("bad answer (%d) at index %d of %d (should be %d)", in[k],k,j,k*size);
57 int main (int argc, char **argv) {
61 int sum=-99,sum_mirror=-99,min=999,max=-999;
66 MPI_Init(&argc, &argv);
67 MPI_Comm_size(MPI_COMM_WORLD, &size);
68 MPI_Comm_rank(MPI_COMM_WORLD, &rank);
70 start_timer = MPI_Wtime();
72 value=rank+1; /* easy to verify that sum= (size*(size+1))/2; */
74 printf("[%d] has value %d\n", rank, value);
75 MPI_Reduce(&value, &sum, 1, MPI_INT, MPI_SUM, root, MPI_COMM_WORLD);
76 MPI_Reduce(&value, &sum_mirror, 1, MPI_INT, MPI_SUM, root, MPI_COMM_WORLD);
78 MPI_Reduce(&value, &min, 1, MPI_INT, MPI_MIN, root, MPI_COMM_WORLD);
79 MPI_Reduce(&value, &max, 1, MPI_INT, MPI_MAX, root, MPI_COMM_WORLD);
81 printf("** Scalar Int Test Result:\n");
82 printf("\t[%d] sum=%d ... validation ",rank,sum);
83 if (((size*(size+1))/2 == sum) && (sum_mirror==sum) )
86 printf("failed (sum=%d,sum_mirror=%d while both sould be %d.\n",
87 sum,sum_mirror,(size*(size+1))/2);
88 printf("\t[%d] min=%d ... validation ",rank,min);
93 printf("\t[%d] max=%d ... validation ",rank,max);
98 printf("Elapsed time=%lf s\n", MPI_Wtime()-start_timer);
101 MPI_Barrier( MPI_COMM_WORLD );
104 printf("** IBM Test Result: ... \n");
105 if (!ibm_test( rank, size))
106 printf("\t[%d] failed.\n",rank);
108 printf("\t[%d] ok.\n",rank);