HOMEWORK - Due to November 5, 2010

1. Write a program to send/receive and print out your name and age to each processors. Hints:

   char* my_name = "Cem Ozdogan";
   MPI_Send(&my_name, 11, MPI_CHAR, dest, 2, MPI_COMM_WORLD);
   MPI_Recv(&recv_my_name, 11, MPI_CHAR, 0, 2, MPI_COMM_WORLD, 
                                                     &status);
   

2. Write a complete program to make a parallel multiplication of two arrays (a and b) with the size of one million each.
   
   $$c=\sum_{i=1}^{1000000} a[i]*b[i]$$
   
   
   • Fill the arrays with random numbers.
   • Master node should distribute the date to the nodes.
   • Your code should work both for even and odd numbers of compute nodes.
   • Master node should also be involved to the action.
   • There should be element-wise multiplication.
   • Each node also should have a local sum and send to master node their values to added by master node up.
   • Master node should print out the final summation value (c) and also report the local values (c at nodes)with corresponding nodes.