A stub for the game of life

gameoflife.c

// gameoflife.c
// Name: YOUR NAME HERE
// JHED: YOUR JHED HERE

#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <string.h>
#include "mpi.h"

#define ITERATIONS 64
#define GRID_WIDTH  256
#define DIM  16     // assume a square grid

int main ( int argc, char** argv ) {

  int global_grid[ 256 ] = {0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,1,0,0,0,0,0,0,0,0,0,0,0,0,0,
    1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
    0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0 };

  // MPI Standard variable
  int num_procs;
  int ID, j;
  int iters = 0;

  // Messaging variables
  MPI_Status stat;
  // TODO add other variables as necessary

  // MPI Setup
  if ( MPI_Init( &argc, &argv ) != MPI_SUCCESS )
  {
    printf ( "MPI_Init error\n" );
  }

  MPI_Comm_size ( MPI_COMM_WORLD, &num_procs ); // Set the num_procs
  MPI_Comm_rank ( MPI_COMM_WORLD, &ID );

  assert ( DIM % num_procs == 0 );

  // TODO Setup your environment as necessary

  for ( iters = 0; iters < ITERATIONS; iters++ ) {
    // TODO: Add Code here or a function call to you MPI code

    // Output the updated grid state
    // FIXME: Feel free to print more iterations when you debug but only 
    //  submit with the 64th iteration printing and do not change the 
    //  format of the printed output.
    if ( ID == 0 && iters == ITERATIONS-1) {
      printf ( "\nIteration %d: final grid:\n", iters );
      for ( j = 0; j < GRID_WIDTH; j++ ) {
        if ( j % DIM == 0 ) {
          printf( "\n" );
        }
        printf ( "%d  ", global_grid[j] );
      }
      printf( "\n" );
    }
  }

  // TODO: Clean up memory
  MPI_Finalize(); // finalize so I can exit
}