+/**
+ * MESSAGE PASSING INTERFACE TEST CASE SUITE
+ *
+ * Copyright IBM Corp. 1995
+ *
+ * IBM Corp. hereby grants a non-exclusive license to use, copy, modify, and
+ *distribute this software for any purpose and without fee provided that the
+ *above copyright notice and the following paragraphs appear in all copies.
+
+ * IBM Corp. makes no representation that the test cases comprising this
+ * suite are correct or are an accurate representation of any standard.
+
+ * In no event shall IBM be liable to any party for direct, indirect, special
+ * incidental, or consequential damage arising out of the use of this software
+ * even if IBM Corp. has been advised of the possibility of such damage.
+
+ * IBM CORP. SPECIFICALLY DISCLAIMS ANY WARRANTIES INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS ON AN "AS IS" BASIS AND IBM
+ * CORP. HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
+ * ENHANCEMENTS, OR MODIFICATIONS.
+ * ***************************************************************************
+ **/
+static int ibm_test(int rank, int size)
+{
+ int success = 1;
+#define MAXLEN 10000
+
+ int root, i, j, k;
+ int out[MAXLEN];
+ int in[MAXLEN];
+ root = size / 2;
+
+ for (j = 1; j <= MAXLEN; j *= 10) {
+ for (i = 0; i < j; i++)
+ out[i] = i;
+
+ MPI_Reduce(out, in, j, MPI_INT, MPI_SUM, root, MPI_COMM_WORLD);
+
+ if (rank == root) {
+ for (k = 0; k < j; k++) {
+ if (in[k] != k * size) {
+ printf("bad answer (%d) at index %d of %d (should be %d)", in[k],
+ k, j, k * size);
+ success = 0;
+ break;
+ }
+ }
+ }
+ }
+ return (success);
+}
+
+
+
+
+int main(int argc, char **argv)
+{
+ int size, rank;
+ int root = 0;
+ int value;
+ int sum = -99, sum_mirror = -99, min = 999, max = -999;
+
+ double start_timer;
+ int quiet = 0;
+
+