What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

Intel Software Network Blogs » Task Parallel Library Beta 1

Intel Software Network Blogs » Task Parallel Library Beta 1 — Fri, 27 Mar 2009 23:52:10 GMT

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Anith » What???s new in Beta 1 for the Task Parallel Library? (Part 1/3)

Anith » What???s new in Beta 1 for the Task Parallel Library? (Part 1/3) — Sat, 28 Mar 2009 00:04:11 GMT

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Using parallel library with I/O intensive tasks

Yurik — Sat, 28 Mar 2009 10:30:42 GMT

Hi, thank you for all the posts, as it gives us a chance to contribute before the final version is out!

Most of the information published about the library is geared towards loading all available cores to 100% with CPU intensive tasks. Can you post a bit about how I/O intensive tasks can be handled by the Parallel library?

For example, processing of a large number of files in parallel and crawling a website with many concurrent connections could in theory benefit from a cleaner, task-oriented design, yet do not appear to be very suitable as it seems the library might not correctly guesstimate the optimal number of threads.

Thanks!

re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

Sun, 29 Mar 2009 02:54:57 GMT

i hope that we also get a way of specifying _minimum_ parallelism because i want to use this library not only for cpu intensive tasks but also for disk io or network calls. those have different optimal degrees of parallelism. when i want to crawl a website i found 32 threads to be optimal on my quad core machine. just 4 threads would not saturate the network.

i know that is not your core scenario but i really hat to rewrite the stupid code to spin off exactly N threads over an over.

Task Parallel Library

Thoughts on .Net — Sun, 29 Mar 2009 19:58:44 GMT

The Microsoft Parallel Team have posted a new entry which details the changes in the Task Parallel Library

Parallel Programming with .NET : What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

DotNetShoutout — Sun, 29 Mar 2009 22:35:25 GMT

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Ali Writes Here!

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re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

ericeil — Mon, 30 Mar 2009 20:12:46 GMT

As Danny mentioned in this article, TPL now uses the CLR ThreadPool as its default work scheduler. One of the main functions of the ThreadPool is to dynamically optimize the number of threads, automatically adapting to your particular workload. In the CLR 4.0 we are working on an improved algorithm for determining the optimal thread count for a given workload, which is the "hill climbing" stuff mentioned here. I hope to write something more about this on my blog soon.

So in principle, I/O-heavy TPL workloads should "just work." However, we are still sorting out exactly how the ThreadPool's concurrency optimization should interact with the Degree of Parallelism concepts in TPL. Suggestions are welcome!

| Tea Break

| Tea Break — Mon, 30 Mar 2009 20:25:58 GMT

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re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

Dima — Tue, 31 Mar 2009 01:00:12 GMT

What is the latest available version of this library?

Parallel Extensions in Visual Studio Beta 1

Mike Taulty's Blog — Tue, 31 Mar 2009 02:24:15 GMT

Meanwhile, over in a corner of the internet; http://blogs.msdn.com/pfxteam/archive/2009/03/27/9514938.aspx

re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

dashih — Tue, 31 Mar 2009 03:51:03 GMT

The latest available version is in the Visual Studio 2010 and .NET Framework 4.0 CTP, which installs as a VPC.

If you would rather play with a standalone DLL, try the Parallel Extensions June 2008 CTP.

Thread-local State vs. ThreadStatic

Michael Cederberg — Tue, 31 Mar 2009 13:12:28 GMT

I wish you would do something about the performance for fields with ThreadStatic attribute. My measurements show that accessing a field with the ThreadStatic attibute is comparable to aquiring and releasing a monitor.

A high performance version of ThreadStatic would make parallel programming easier.

Thread-local State vs. ThreadStatic

Michael Cederberg — Tue, 31 Mar 2009 13:12:30 GMT

A high performance version of ThreadStatic would make parallel programming easier.

Developer News » Blog Archive » Parallel Extensions in Visual Studio Beta 1 Meanwhile, over in

Wed, 01 Apr 2009 01:04:39 GMT

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还是GC的问题, parallel extensions

new 维生素C.net() — Wed, 01 Apr 2009 05:31:06 GMT

两种GC,做web的需要哪种?经常看到一些asp.net的项目没有根据生产环境选用合适的GC,我甚至都亲眼见过asp.net使用gcConcurency设置为true的场景!

re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

Waqas — Wed, 01 Apr 2009 19:23:29 GMT

Microsoft always comes with good ideas. I didn't like the ThreadLocal<TLocal>, but they did a great job by baking it into the parallel.for and foreach overloads. Great Job. BTW, when are you releasing Beta 1 (I'll not tell anyone!) I'm dreaming of that in the day and in the night.

Friday Links #45 | Blue Onion Software *

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re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

toub — Sun, 05 Apr 2009 02:37:56 GMT

Michael, your wish (re: ThreadStatic) is likely being granted. Stay tuned... ;)

What’s new in Beta 1 for the Task Parallel Library? (Part 2/3)

Parallel Programming with .NET — Mon, 06 Apr 2009 23:51:54 GMT

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What’s new in Beta 1 for the Task Parallel Library? (Part 3/3)

Parallel Programming with .NET — Wed, 15 Apr 2009 00:34:52 GMT

Related posts: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3) What’s new in Beta 1 for

What???s new in Beta 1 for the Task Parallel Library? (Part 3/3) | Coded Style

What???s new in Beta 1 for the Task Parallel Library? (Part 3/3) | Coded Style — Wed, 15 Apr 2009 01:11:50 GMT

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Learning resources for .NET 4.0 new features « Bogdan Brinzarea’s blog

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What’s new in Beta 1 for Parallel LINQ (PLINQ)?

Parallel Programming with .NET — Wed, 29 Apr 2009 21:56:13 GMT

A number of improvements have been made to Parallel Extensions since the Visual Studio 2010 CTP across

What???s new in Beta 1 for Parallel LINQ (PLINQ)? | Coded Style

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What???s new in Beta 1 for Parallel LINQ (PLINQ)? | Coded Style

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re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

miridfd — Thu, 30 Apr 2009 00:20:01 GMT

Is there a DLL available for the TPL? (except for the June 2008 CTP, which doesn't include System.Threading.Parallel namespace and the other new things such as TaskFactory etc.)

Thanks!

re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

dashih — Thu, 30 Apr 2009 01:11:01 GMT

Sorry. TPL is now part of mscorlib.dll, and we have no plans to support a standalone DLL of just Parallel Extensions.

However, the June CTP should include System.Threading.Parallel...

Thanks for your question!

What???s new in Beta 1 for Parallel LINQ (PLINQ)? | Coded Style

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re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

dcuccia — Wed, 20 May 2009 21:36:08 GMT

Guys,

I've installed the .NET 4.0 Beta bits to play with, and have it (seemingly successfully) running side-by-side with the PFX June '08 CTP (on which my project currently has a dependency). Obviously not a "supported scenario," but any major issues you foresee with this configuration?

David

.NET 4 Beta 1 is now available, with parallelism!

Parallel Programming with .NET — Thu, 21 May 2009 01:38:59 GMT

We’re very excited that the .NET Framework 4 Beta is now available for public download, as .NET 4 has

.NET 4 Beta 1 is now available, with parallelism! | Coded Style

.NET 4 Beta 1 is now available, with parallelism! | Coded Style — Thu, 21 May 2009 02:44:49 GMT

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re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

toub — Thu, 21 May 2009 05:52:12 GMT

Hi David-

To our knowledge, there shouldn't be any problems with both the June 2008 CTP and the .NET Framework 4 installed side-by-side. From the perspective of .NET 4, the System.Threading.dll assembly that came with the June 2008 CTP is just another arbitrary assembly that has nothing to do with the types in .NET 4.

Of course, you'd probably run into problems if you tried to use that assembly in a .NET 4 project, since they both contain types named the same and existing in the same namespace.

Visual Studio 2010 Beta 1 est disponible pour tous !!!

Développement parallèle — Thu, 21 May 2009 13:21:06 GMT

Mots clés Technorati : Visual Studio 2010 , PFX , Concurrency Runtime , TPL , PLINQ , Exemples , Documentation

Visual Studio 2010 Beta 1 est disponible pour tous !!! | Coded Style

Visual Studio 2010 Beta 1 est disponible pour tous !!! | Coded Style — Thu, 21 May 2009 15:07:48 GMT

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re: What’s new in Beta 1 for the Task Parallel Library? (Part 1/3)

dcuccia — Fri, 22 May 2009 02:22:49 GMT

Thanks! Glad to hear it. -David

Visual Studio 2010 Beta 1 est disponible pour tous !!! | Coded Style

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Parallel Programming with NET What s new in Beta 1 for the Task | Paid Surveys

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Parallel Programming with NET What s new in Beta 1 for the Task | Quick Diets

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