Released! Parallel Extensions to the .NET Framework June 2008 CTP

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Brian Strelioff — Mon, 02 Jun 2008 13:40:17 GMT

Download link does not work -- "We’re sorry, but we were unable to service your request. You may wish to choose from the links below for information about Microsoft products and services."

Parallel Extensions June CTP is out

Daniel Moth — Mon, 02 Jun 2008 14:15:24 GMT

Parallel Extensions June CTP is out

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

toub — Mon, 02 Jun 2008 16:30:37 GMT

Thanks for the interest! We're very excited about this CTP... apparently a little too excited ;) This post was supposed to go live today at 10am PST, rather than 2am PST. The bits should be available for download in a few hours; please come back then, and let us know what you think.

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Mike Strobel — Mon, 02 Jun 2008 16:34:07 GMT

This is great news--I've been using the Parallel Extensions to parallelize a game engine, and I'm eager to try out the new release!

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Matt Valerio — Mon, 02 Jun 2008 17:05:21 GMT

Nice! I'm also interested in trying this out, but the download link doesn't work (same as what BKStrelioff said above).

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Rafael — Mon, 02 Jun 2008 18:08:03 GMT

4:07pm, here in Scotland and the link does not work!!, at least not yet...

Damon Payne: Hand waving software architect - June 2008 Parallel Extensions CTP

Damon Payne: Hand waving software architect - June 2008 Parallel Extensions CTP — Mon, 02 Jun 2008 18:16:47 GMT

PingBack from http://www.damonpayne.com/2008/06/02/June2008ParallelExtensionsCTP.aspx

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Rafael — Mon, 02 Jun 2008 18:33:16 GMT

Now, the link is working!! Great job!

Begining to test...

Regards

Just released: Parallel Extensions – June CTP

Just code - Tamir Khason — Mon, 02 Jun 2008 20:32:09 GMT

Today, Parallel Programming team released 2nd CTP for Parallel Extensions to .NET Framework 3.5. Major

Just released: Parallel Extensions – June CTP

Just Code - Tamir Khason — Mon, 02 Jun 2008 20:32:13 GMT

Today, Parallel Programming team released 2nd CTP for Parallel Extensions to .NET Framework 3.5. Major

Coordination Data Structures « Tales from a Trading Desk

Coordination Data Structures « Tales from a Trading Desk — Mon, 02 Jun 2008 20:56:54 GMT

PingBack from http://mdavey.wordpress.com/2008/06/02/coordination-data-structures/

IT edge » Microsoft Parallel Extensions to .NET Framework – June CTP

IT edge » Microsoft Parallel Extensions to .NET Framework – June CTP — Mon, 02 Jun 2008 21:29:23 GMT

PingBack from http://www.itedge.net/blog/2008/06/02/microsoft-parallel-extensions-to-net-framework-june-ctp/

Parallel Extensions June 2008 CTP

It's Spann, not spam — Mon, 02 Jun 2008 21:32:03 GMT

Download the Parallel Extensions June 2008 CTP Parallel Extensions simplifies development by providing

New Parallel Extensions to the .NET Framework CTP Released

DotNetKicks.com — Mon, 02 Jun 2008 22:59:30 GMT

You've been kicked (a good thing) - Trackback from DotNetKicks.com

MVPs en Latinoamerica : Download the Parallel Extensions June 2008 CTP

MVPs en Latinoamerica : Download the Parallel Extensions June 2008 CTP — Mon, 02 Jun 2008 23:16:01 GMT

PingBack from http://blogs.msdn.com/mvplead/archive/2008/06/02/download-the-parallel-extensions-june-2008-ctp.aspx

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

aL — Tue, 03 Jun 2008 02:24:10 GMT

nifty :)

btw do you know what happend to the accelerator team? they guys that used the gpu to do general purpose computing?

it would be awsome to see someting like that in plinq :)

Parallel Extension Community Technical Preview

Community and Influencers Blog — Tue, 03 Jun 2008 02:45:10 GMT

At Microsoft we are always looking to get feedback about our products and technologies from communities

Parallel Extensions to .NET June 2008 CTP

Nick MacKechnie — Tue, 03 Jun 2008 04:01:14 GMT

Hi All, Parallel Extensions simplifies development by providing library-based support for introducing

Parallel Extensions 2008년 6월 CTP

bkchung's WebLog — Tue, 03 Jun 2008 09:01:47 GMT

Parallel Programming with .NET : Released! Parallel Extensions to the .NET Framework June 2008 CTP .NET

Reflective Perspective - Chris Alcock » The Morning Brew #106

Reflective Perspective - Chris Alcock » The Morning Brew #106 — Tue, 03 Jun 2008 09:24:14 GMT

PingBack from http://blog.cwa.me.uk/2008/06/03/the-morning-brew-106/

jsedlak » Blog Archive » Parallel Extensions for .NET

jsedlak » Blog Archive » Parallel Extensions for .NET — Tue, 03 Jun 2008 11:27:06 GMT

PingBack from http://jsedlak.com/2008/06/03/parallel-extensions-for-net/

доступен Parallel Extensions to .NET June 2008 CTP

Марат Бакиров [MS] — Tue, 03 Jun 2008 14:27:58 GMT

Вышел второй CTP для Parallel Extensions - библиотеки позволяющей облегчить напи

Parallel Extensions to .NET June 2008 CTP

Public Sector Developer Weblog — Tue, 03 Jun 2008 19:17:31 GMT

Free performance lunch is over. During the past few decades we witnessed continuous growth of single

Parallel Extensions to .NET June 2008 CTP « VladVino’s Blog

Parallel Extensions to .NET June 2008 CTP « VladVino’s Blog — Tue, 03 Jun 2008 19:20:20 GMT

PingBack from http://vladvino.wordpress.com/2008/06/03/parallel-extensions-to-net-june-2008-ctp/

More interesting announcements

Me about things... — Tue, 03 Jun 2008 20:34:03 GMT

On top of Bill Gates announcements at the Microsoft Tech·Ed North America 2008 Developers conference,

Visual Studio Links #36

Visual Studio Hacks — Wed, 04 Jun 2008 18:16:39 GMT

My latest in a series of the weekly, or more often, summary of interesting links I come across related to Visual Studio. The June 2008 CTP of the Parallel Extensions to the .NET Framework has been released. VSX Team announced the VSX Developer Conference

Parallel Extensions for .NET: June 2008 CTP

Paolo Pialorsi — Wed, 04 Jun 2008 22:50:34 GMT

Le Parallel Extensions per .NET sono sicuramente uno degli argomenti più caldi del periodo. Se ne

Parallel Extensions to the .NET Framework June 2008 CTP

Johan Lindfors — Wed, 04 Jun 2008 23:27:44 GMT

Under hela vårens lanseringsroadshow så har jag och Robert visat hur Parallel Extensions som

Ray Tracer samples in the June 2008 CTP

Parallel Programming with .NET — Thu, 05 Jun 2008 08:50:08 GMT

The June 2008 Community Technology Preview (CTP) of Parallel Extensions to the .NET Framework was released

The "To Do" List

Mike Taulty's Blog — Thu, 05 Jun 2008 18:05:30 GMT

I watched the TechEd (US Developers) Keynote just yesterday. Tech·Ed NA Developers Keynote delivered...

Wöchentliche Rundablage: Silverlight 2, WPF, ASP.NET MVC, jQuery… | Code-Inside Blog

Mon, 09 Jun 2008 22:12:02 GMT

PingBack from http://code-inside.de/blog/2008/06/09/wchentliche-rundablage-silverlight-2-wpf-aspnet-mvc-jquery/

Weekly Links: Silverlight 2, WPF, ASP.NET MVC, jQuery… | Code-Inside Blog International

Mon, 09 Jun 2008 22:12:43 GMT

PingBack from http://code-inside.de/blog-in/2008/06/09/wchentliche-rundablage-silverlight-2-wpf-aspnet-mvc-jquery/

PFx 2ème CTP disponible

Pierrick's Blog — Tue, 10 Jun 2008 11:21:10 GMT

l'equipe PFX, vient d'annoncer la disponibilité de la deuxième CTP du framework parallèle pour .NET blogs

Publicada la Parallel.FX CTP (Junio 2008) « Tempus Fugit

Publicada la Parallel.FX CTP (Junio 2008) « Tempus Fugit — Thu, 12 Jun 2008 11:41:15 GMT

PingBack from http://tempuzfugit.wordpress.com/2008/06/12/publicada-la-parallelfx-ctp-junio-2008/

Parallel Extension to .NET 3.5 June 08 CTP released…

Rexiology@MSDN — Thu, 19 Jun 2008 15:59:34 GMT

at 06/02, Microsoft just released the latest CTP of Parallel Extension to .NET 3.5 (as PFX later), available

Parallel Extension to .NET 3.5 June 08 CTP released…

Rexiology::Work — Thu, 19 Jun 2008 16:00:02 GMT

crosspost from http://blogs.msdn.com/rextang at 06/02, Microsoft just released the latest CTP of Parallel

Parallel extensions is not compatible with NUnit

Casper Hornstrup — Wed, 25 Jun 2008 14:58:43 GMT

When I run the following test in NUnit, I get this exception when NUnit has finished running all tests:

Unhandled Exception:Unhandled Exception: System.AppDomainUnloadedException: The

application domain in which the thread was running has been unloaded.System.App

DomainUnloadedException: The application domain in which the thread was running

has been unloaded.

The program works as expected when run as a console application. Is there a workaround?

using System;

using System.Threading;

using NUnit.Framework;

namespace Tests

{

[TestFixture]

public class ParallelExtensionsTest

{

[Test]

public void FirstTest()

{

Parallel.Invoke(

() => A(),

() => B());

}

private static void A()

{

Console.WriteLine("A");

}

private static void B()

{

Console.WriteLine("B");

}

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Alex Martsynkevich — Thu, 03 Jul 2008 20:44:46 GMT

It looks like the exception Casper indicated above happens whenever parallel extensions were used from app domain which later got unloaded. Here's a simple example to replicate this:

using System;

using System.Reflection;

using System.Threading;

public class Program : MarshalByRefObject

{

private static void Main()

{

AppDomain appDomain = AppDomain.CreateDomain("Moo");

var p = (Program) appDomain.CreateInstanceAndUnwrap(

Assembly.GetExecutingAssembly().FullName,

"Program");

p.ParallelTest();

AppDomain.Unload(appDomain);

}

public void ParallelTest()

{

Parallel.Invoke(() => Console.WriteLine("Leet!"));

}

Any ideas how to avoid this?

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Casper Hornstrup — Fri, 18 Jul 2008 23:02:31 GMT

I found another problem. After the parallel operations are performed, the Parallel Extensions library does hog the CPUs. Even for my simple test program below, it uses up to about 1/3 of my 4 Xeon cores long after the operations are performed. It doesn't seem to ever stop. The CPU load is about evenly distributed accross all cores. Both Parallel.For and Parallel.ForEach has this problem. My OS is Windows Server 2003. Is there a fix or workaround available?

using System;

using System.Threading;

namespace ParallelExtensionsConsole

{

public class Program

{

static void Main(string[] args)

{

Console.WriteLine("Call Parallel.For (y/n)?");

var key = Console.ReadKey();

Console.WriteLine();

if (key.KeyChar == 'y')

{

Parallel.For(0, 10, i =>

{

Console.WriteLine(i);

});

}

Console.WriteLine("Press any key to continue...");

Console.ReadLine();

}

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

toub — Sun, 20 Jul 2008 02:36:25 GMT

re: AppDomain

Yes, the scheduler in the CTP doesn't handle thread aborts very well, which frequently causes the process to crash when a live scheduler exists in a domain being shutdown (since AppDomain shut down causes thread aborts on all threads with stack frames in that domain). We're working to harden this for a future release. The work around is to ensure that any schedulers in the domain are disposed of and shutdown before the domain is shut down; unfortunately, since by design the default TaskManager, the workaround requires always explicitly using a new TaskManager instance, so as to avoid lazily-initializing the default TaskManager instance.

re: Another problem

Yes, thanks for reporting it. This is a known issue with how the scheduler searches for work; there's a bug that causes it to sometimes get stuck in a polling loop, which manifests as the CPU usage you're observing... definitely being addressed for a future release.

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

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Just released: Parallel Extensions ??? June CTP | Tamir Khason - Just code

Just released: Parallel Extensions ??? June CTP | Tamir Khason - Just code — Thu, 01 Jan 2009 12:04:34 GMT

PingBack from http://khason.net/blog/just-released-parallel-extensions-%e2%80%93-june-ctp/

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Bill Hally — Fri, 13 Feb 2009 00:39:07 GMT

Re: The app domain "workaround" - this doesn't work. I used Reflector to take a look at the assembly, and the default TaskManager is not lazily initialized, so you can't create a TaskManager instance without also creating the default one.

However, for NUnit you can work around this by copying the NUnit console exe and the various assemblies it needs into the same directory as the assembly containing the tests you wish to run, then specify /domain:None when you run it.

AppDomainUnloadedException from NUnit after PLINQ test

Garth Roxburgh-Kidd — Thu, 27 Aug 2009 13:18:06 GMT

I'm having trouble testing PLINQ code or using PLINQ to make parametric tests run faster. NUnit consistently throws AppDomainUnloadedException after the tests. I've tried many workarounds suggested in this thread and elsewhere, to no avail.

What's happened in the last 14 months to make AppDomainUnloadedException easier to avoid, diagnose, and — ideally — prevent?

Yours,

Garth.

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

essey — Fri, 28 Aug 2009 01:03:06 GMT

@Garth - Thanks for the comments. We have spent nearly a whole cycle of development since this CTP. We have done a lot of work around the reliability of parallel extensions including exception handling in AppDomain unload cases. Please try this out on Beta 1 of the .NET Framework 4 to see if this issue persists. Additionally, we have taken a few more fixes in AppDomain unload since Beta 1, and they should be available in an upcoming release of the Framework.

You can download Beta 1 here:

http://www.microsoft.com/downloads/details.aspx?displaylang=en&FamilyID=ee2118cc-51cd-46ad-ab17-af6fff7538c9

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

Jason — Thu, 26 Nov 2009 16:52:40 GMT

"Download the Parallel Extensions June 08 CTP" link is broken.

re: Released! Parallel Extensions to the .NET Framework June 2008 CTP

toub — Mon, 30 Nov 2009 17:01:25 GMT

The June 2008 CTP is no longer available. Parallel Extensions is now part of the .NET Framework 4. If you do want an experimental release that works with .NET 3.5, you can use the bits that are part of the Reactive Extensions to .NET release on DevLabs at http://msdn.microsoft.com/en-us/devlabs/ee794896.aspx.