Main.java

package life;

import java.io.IOException;
import java.io.InputStream;
import java.util.concurrent.Executor;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.ForkJoinPool;

/**
 * Example main program for running the sequential Game-of-Life.
 *
 * @author Mark.Utting
 *
 */
public class Main {

	final static int GENERATIONS = 20; //4080;
	final static int BOARD_SIZE = 32768; //1024;

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
	    // control parameters
        final Executor executor = ForkJoinPool.commonPool();
//        final Executor executor = Executors.newFixedThreadPool(8);
        final int rowsPerTask = 128;

        int times = 20; int ignoreTimes = 5; double sum = 0;
        for (int iter = 0; iter < times; iter++) {
//            SequentialLife life = new SequentialLife(BOARD_SIZE);
//            RowParallelLife life = new RowParallelLife(BOARD_SIZE, executor, rowsPerTask);
            RowParallelLife1DByteArray life = new RowParallelLife1DByteArray(BOARD_SIZE, executor, rowsPerTask);
//            RowParallelLifeBitSet life = new RowParallelLifeBitSet(BOARD_SIZE, executor, rowsPerTask);
//            BlockParallelLife life = new BlockParallelLife(BOARD_SIZE, executor, rowsPerTask, 256);
            InputStream input = Main.class.getResourceAsStream("/gosperGliderGun.patt");
            life.loadPattern(input);
            System.out.println("Starting " + GENERATIONS + " generations of "
                    + BOARD_SIZE + "x" + BOARD_SIZE);
            final long startTime = System.nanoTime();
            for (int gen = 0; gen < GENERATIONS; gen++) {
                life.age();
            }
            final long endTime = System.nanoTime();
            System.out.println("Time taken was " + (endTime - startTime) / 1.0e9 + " secs");
//            life.printBoard(40, 40);

            if(iter >= ignoreTimes) sum += (endTime - startTime) / 1.0e9;
        }
        System.out.println("Average Time taken was " + sum/(times-ignoreTimes) + " secs");
        ((ExecutorService)executor).shutdown();
	}
}