edu.rit.smp.monte
Class PiSmp2

java.lang.Object
  edu.rit.smp.monte.PiSmp2

public class PiSmp2
extends Object

Class PiSmp2 is an SMP parallel program that calculates an approximate value for π using a Monte Carlo technique. The program generates a number of random points in the unit square (0,0) to (1,1) and counts how many of them lie within a circle of radius 1 centered at the origin. The fraction of the points within the circle is approximately π/4.

Usage: java -Dpj.nt=K edu.rit.smp.monte.PiSmp2 seed N
K = Number of parallel threads
seed = Random seed
N = Number of random points

The computation is performed in parallel in multiple threads. To improve performance, each thread has its own pseudorandom number generator, and the program uses the reduction pattern to determine the count. The program measures the computation's running time.

Method Summary

static void

main(String[] args) Main program.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

main

public static void main(String[] args)
                 throws Exception

Main program.

Throws:

Exception