Convert VS-2005 for loop to VS-2010 Parallel.for

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Hai All,

I am new to C#4.0 I need to convert for loop to parallel.for loop.

C#

for (int i = 0; i < _queues.Length; ++i)
           {
               _queues[i] = new LinkedList<IHasWorkItemPriority>();
           }

please convert this for to parallel.For.

Posted 24-Nov-11 22:50pm

sacraj

Updated 24-Nov-11 23:04pm

Mehdi Gholam

v2

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OriginalGriff · Answer 1 · 2011-11-24T22:54:00

Solution 1

Why? It isn't going to improve performance by a significant amount - all it is doing is allocating a new linked list structure, which will take almost no time. Paralleling this code will likely make it slower, not faster as it will introduce an overhead in the task construction / destruction.

Posted 24-Nov-11 22:54pm

OriginalGriff

Comments

Sergey Alexandrovich Kryukov 25-Nov-11 5:00am

Agree, a 5.
--SA

sacraj 25-Nov-11 5:01am

please convert this to Parallel.For

sacraj 25-Nov-11 5:01am

It is very urgent requirement. Not related to performance

OriginalGriff 25-Nov-11 5:05am

Why? The only reason for using Parallel.For is for performance reasons - if it is going to worsen performance, then it isn't worth doing. Why waste my time, and yours doing something that is going to make things worse, not better?

sacraj 25-Nov-11 5:10am

Please explain ++i vs i++ in Paraller.For. I am in urgent need

DaveAuld 25-Nov-11 5:14am

There is a blog on pre and post ++ here; http://softwareramblings.com/2010/01/post-increment-vs-pre-increment.html

sacraj 25-Nov-11 5:49am

I understand the difference between ++i and i++. How can we implement this in Paraller.For loop

sacraj 25-Nov-11 5:21am

I know the difference between ++i and i++. How to do this in Parallel.For