+/**
+ * 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.
+ * ***************************************************************************
+ **/
+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;
+
+