Plinq Vs Linq Parallel Programming in .Net Framework 4.0

Introduction

PLINQ automatically parallelizes local LINQ queries. PLINQ has the advantage ofbeing easy to use in that it offloads the burden of both work partitioning and resultcollation to the Framework.
 

How to partitioning working

Wihtout PLIINQ

With PLINQ

public static void callPlinQ()
        {

            DateTime daa = new DateTime();
            daa = DateTime.Now;

            IEnumerable<int> numbersx = Enumerable.Range(3, 1000000 - 3);

            var parallelQueryx = from n in numbersx.AsParallel()
                                 where Enumerable.Range(2, (int)Math.Sqrt(n)).All(i => n % i > 0)
                                 select n;int[] primesx = parallelQueryx.ToArray();

            DateTime exx = new DateTime();
            exx = DateTime.Now;

            Console.WriteLine(" in PLINQ "+(exx - daa).ToString());
        }

With LINQ

public static void callLinQ()
        {

            DateTime da = new DateTime();
            da = DateTime.Now;

            IEnumerable<int> numbers = Enumerable.Range(3, 1000000 - 3);

            var parallelQuery = from n in numbers
                                where Enumerable.Range(2, (int)Math.Sqrt(n)).All(i => n % i > 0)
                                select n;int[] primes = parallelQuery.ToArray();

            DateTime ex = new DateTime();
            ex = DateTime.Now;

            Console.WriteLine("LINQ "+(ex - da).ToString());
        }

Enjoy the PLINQ.

Sample Project Source

Download source files -23 kb