New on framework 4 - Parallel

Not long ago, I started to learn what's new on framework 4 (Not that it was in sight in the SharePoint - still stuck at 3.5)

Anyway, I took a sample from "Love the Dot"
There is a new concept in the framework 4 - Parallel
Parallel gives us to use the computer's CPU resources
They are a small example - I will present for two loops of
The first is the Parallel method
Parallel.For (0, 250, (i) =>
Second - we know from ancient man ovalness
for (int i = 0; i <250; i + +)

Here's the code

using System;
using System.Diagnostics;
using System.Threading.Tasks;
namespace ConsoleApplication3
{
    class Program
    {
        static void Main(string[] args)
        {
            Stopwatch watch = new Stopwatch();
            watch.Start();
            Parallel.For(0, 250, (i) =>
            {
                RandomMix(i);
            }
            );
            watch.Stop();
            Console.WriteLine(String.Format("Parallel.For tooks {0} milliseconds", watch.ElapsedMilliseconds));
            watch = new Stopwatch();
            watch.Start();
            for (int i = 0; i < 250; i++)
            {
                RandomMix(i);
            }
            watch.Stop();
            Console.WriteLine(String.Format("for tooks {0} milliseconds", watch.ElapsedMilliseconds));
            Console.ReadLine();
        }
        private static void RandomMix(int instance) 
        { 
            double result = Math.Acos(new Random().NextDouble()) * Math.Atan2(new Random().NextDouble(), new Random().NextDouble());  
            for (int i = 0; i < 20000; i++)  
            { 
                result += (Math.Cos(new Random().NextDouble()) * Math.Acos(new Random().NextDouble())); 
            }  
        }
    }
}

This result (notice the picture with multiple processors)

Parallel.For tooks 2.6 sec
for tooks 22.1 sec

Amazing - it really works
For those interested there is also continuing on - Parallel LINQ (PLINQ)