May 2009 | .NET Parallel Programming

ParallelOptions.MaxDegreeOfParallelism vs PLINQ’s WithDegreeOfParallelism

Stephen Toub - MSFTMay 29, 2009May 29, 200905/29/09

We exert a good deal of effort ensuring that the APIs we provide are consistent within Parallel Extensions as well as with the rest of the .NET Framework. This is from many angles, including behavior and general design, but also naming. So when there are slight differences in naming, it raises questions.One occurrence of such a ...

Partitioning in PLINQ

esseyMay 28, 2009May 28, 200905/28/09

Partitioning in PLINQ Every PLINQ query that can be parallelized starts with the same step: partitioning. Some queries may even need to repartition in the middle. Partitioning is a fairly simple concept at the high level: PLINQ takes a lock on the input data source, breaks it into multiple pieces, and then distributes these to the...

Exiting from Parallel Loops Early

Stephen Toub - MSFTMay 27, 2009May 27, 200905/27/09

Exiting out of loops early is a fairly common pattern, one that doesn’t go away when parallelism is introduced. To help simplify these use cases, the Parallel.For and Parallel.ForEach methods support several mechanisms for breaking out of loops early, each of which has different behaviors and targets different requirements....

Known Issues in Parallel Extensions to .NET 4.0 Beta1

esseyMay 26, 2009May 26, 200905/26/09

We’re excited to have the Beta in your hands. (See .NET 4 Beta 1 is now available, with parallelism!) As you use it, please keep in mind the following known issues which we plan to address after Beta1.1. Do not take a dependency on the System.Collections.Concurrent.ConcurrentLinkedList<T> class, because it is being removed....

Does Parallel.For use one Task per iteration?

Stephen Toub - MSFTMay 26, 2009May 26, 200905/26/09

In .NET 4, the new Parallel class provides For, ForEach, and Invoke methods for performing operations in parallel. One mental model that some folks use when thinking about Parallel.For is that it’s equivalent to running one System.Threading.Tasks.Task per iteration, e.g. that a loop like: Parallel.For(0, N, i => { &...

.NET 4 Cancellation Framework

Mike LiddellMay 22, 2009May 22, 200905/22/09

A very interesting addition to .NET 4 is a set of new types that specifically assist with building cancellation-aware applications and libraries. The new types enable rich scenarios for convenient and safe cancellation, and help simplify situations that used to be be difficult and error-prone and non-composable. The details of the new types ...

Samples for Parallel Programming with the .NET Framework 4

Stephen Toub - MSFTMay 20, 2009May 20, 200905/20/09

Along with the release of the .NET Framework 4 Beta 1, we've just published a slew of samples that demonstrate using Parallel Extensions in a variety of ways. You can download these from Code Gallery at https://code.msdn.microsoft.com/ParExtSamples.These samples include raytracers, a sudoku game, an image colorization algorithm, solvers ...

.NET 4 MSDN documentation for parallelism

Stephen Toub - MSFTMay 20, 2009May 20, 200905/20/09

In addition to the Betas of Visual Studio 2010 and the .NET Framework 4 being available for download today, the MSDN documentation for .NET 4 Beta 1 is also available. This includes quite a bit of useful information about the new parallelism constructs. Here's a summary of the relevant material, with links: Related to...

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

Stephen Toub - MSFTMay 20, 2009May 20, 200905/20/09

We’re very excited that the .NET Framework 4 Beta is now available for public download, as .NET 4 has Parallel Extensions built into its core. You can download the Betas for Visual Studio 2010 and .NET Framework 4 at https://msdn.microsoft.com/en-us/netframework/dd582936.aspx.For more information on what’s new in Beta 1 regarding ...

Debugging Support for Tasks

Daniel MothMay 16, 2009May 16, 200905/16/09

Visual Studio 2010 has new debugger windows to support the Task-based programming model. Check out my blog post about the Parallel Tasks window...

.NET Parallel Programming

May 2009 | .NET Parallel Programming

ParallelOptions.MaxDegreeOfParallelism vs PLINQ’s WithDegreeOfParallelism

Partitioning in PLINQ

Exiting from Parallel Loops Early

Known Issues in Parallel Extensions to .NET 4.0 Beta1

Does Parallel.For use one Task per iteration?

.NET 4 Cancellation Framework

Samples for Parallel Programming with the .NET Framework 4

.NET 4 MSDN documentation for parallelism

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

Debugging Support for Tasks

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