Minimal mpiJava program

class Hello {

static public void main(String[] args) {

MPI.Init(args) ;

int myrank = MPI.COMM_WORLD.Rank() ;

if(myrank == 0) {

char[] message = “Hello, there”.toCharArray() ;

MPI.COMM_WORLD.Send(message, 0, message.length, MPI.CHAR, 1, 99) ;

}

else {

char[] message = new char [20] ;

MPI.COMM_WORLD.Recv(message, 0, 20, MPI.CHAR, 0, 99) ;

System.out.println(“received:” + new String(message) + “:”) ;

}

MPI.Finalize() ;

}