public static void main(String args[]) throws MPIException {
int myself, tasks;
IntBuffer in = MPI.newIntBuffer(MAXLEN);
Request request;
MPI.Init(args);
myself = MPI.COMM_WORLD.getRank();
tasks = MPI.COMM_WORLD.getSize();
for (int j = 1; j <= MAXLEN; j *= 10) {
for (int i = 0; i < j; i++) {
in.put(i, i);
}
request = MPI.COMM_WORLD.iAllReduce(in, j, MPI.INT, MPI.SUM);
request.waitFor();
request.free();
for (int k = 0; k < j; k++) {
if (in.get(k) != k * tasks) {
OmpitestError.ompitestError(
OmpitestError.getFileName(),
OmpitestError.getLineNumber(),
" bad answer ("
+ in.get(k)
+ ") at index "
+ k
+ " of "
+ j
+ " (should be "
+ (k * tasks)
+ ")\n");
break;
}
}
}
MPI.COMM_WORLD.barrier();
MPI.Finalize();
}
public static void main(String args[]) throws MPIException {
int root, myself, tasks;
int out[] = new int[MAXLEN], in[] = new int[MAXLEN];
MPI.Init(args);
myself = MPI.COMM_WORLD.getRank();
tasks = MPI.COMM_WORLD.getSize();
root = tasks / 2;
for (int j = 1; j <= MAXLEN; j *= 10) {
for (int i = 0; i < j; i++) {
out[i] = i;
}
MPI.COMM_WORLD.reduce(out, in, j, MPI.INT, MPI.SUM, root);
if (myself == root) {
for (int k = 0; k < j; k++) {
if (in[k] != k * tasks) {
OmpitestError.ompitestError(
OmpitestError.getFileName(),
OmpitestError.getLineNumber(),
" bad answer ("
+ in[k]
+ ") at index "
+ k
+ " of "
+ j
+ " (should be "
+ (k * tasks)
+ ")\n");
break;
}
}
}
}
MPI.COMM_WORLD.barrier();
MPI.Finalize();
}
private void mpiInit(String args[]) throws MPIException {
MPI.Init(args);
mpiRank = MPI.COMM_WORLD.getRank();
mpiRanksTotal = MPI.COMM_WORLD.getSize();
}