/*
 * Created on Apr 20, 2007 by berthold
 *
 */
import mpi.*;
import java.util.Arrays;

public class mpiDeadlock {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		int rank;
		int size;
		int data[];
		int i;
		
		MPI.Init(args);
		rank = MPI.COMM_WORLD.Rank();
		
		for (i=0;i < args.length; i++)
			System.out.println(i + ": " + args[i]);
		
		size = 100;
		if (args.length >= 3) { // Argument 3, nicht 0. MPJ-Magix
			size = Integer.parseInt(args[3]); 
		}
		System.out.printf("Bestellte Groesse: %d\n", size);

		if (size < 2) return;

		data = new int[size];
		i = rank % 256;
		i += (i<<8);
		i += (i<<16); 
		Arrays.fill(data, i);
		
		System.out.printf("Sende\n");
		MPI.COMM_WORLD.Send(data, size, 0, MPI.INT, rank ^ 1, 0);
		System.out.printf("Empfange\n");
		MPI.COMM_WORLD.Recv(data, size, 0, MPI.INT, rank ^ 1, 0);
		System.out.printf(rank + "Erhalten: 0x%x\n", data[1]);

		MPI.Finalize();
	}

}