.NET Parallel Programming

All about Async/Await, System.Threading.Tasks, System.Collections.Concurrent, System.Linq, and more…

Coordination Data Structures - .NET Parallel Programming

Cancellation in Parallel Extensions

June 22, 2009 Jun 22, 2009 06/22/09
Mike Liddell
One of the great features that crosses all of Parallel Extensions types is a consistent approach to cancellation (see https://blogs.msdn.com/pfxteam/archive/2009/05/22/9635790.aspx). In this post we explore some of the ways cancellation is used in Parallel Extensions and explain the guidance we developed. The new cancellation system is a ...

.NET 4 Cancellation Framework

May 22, 2009 May 22, 2009 05/22/09
Mike Liddell
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

May 20, 2009 May 20, 2009 05/20/09
Stephen Toub - MSFT
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 ...

Concurrent, Multi-core Programming on Windows and .NET

October 28, 2008 Oct 28, 2008 10/28/08
Stephen Toub - MSFT
Thanks to everyone who attended our PDC pre-conference session yesterday on parallelism and concurrency!  We had a wonderful turnout at the event, and David, Joe, and I all had a terrific time. Attached to this post are the slides we presented. (It turns out that the PDC site does allow you to submit an evaluation for a precon.  If ...

Feedback requested: Enumerating Concurrent Collections

August 12, 2008 Aug 12, 2008 08/12/08
Stephen Toub - MSFT
The June 2008 CTP of Parallel Extensions contained a first look at some of the work we're doing to augment the .NET Framework with a set of additional coordination data structures that aid in the development of highly concurrent applications.  This included two thread-safe collections, ConcurrentQueue<T> and ConcurrentStack<T>...

Waiting for Tasks

August 5, 2008 Aug 5, 2008 08/5/08
Stephen Toub - MSFT
Parallel Extensions makes it easy to wait for Tasks to complete.  Task exposes a Wait method, which can be used trivially: Task t = Task.Create(...); ... t.Wait();Task also exposes several static methods for waiting on an array of tasks, either for all of them to complete or for any of them to complete: Task t1 = Task.Create(...); Task t2...

Useful Abstractions Enabled with ContinueWith

July 24, 2008 Jul 24, 2008 07/24/08
Stephen Toub - MSFT
In the June 2008 CTP of Parallel Extensions to the .NET Framework, we introduced the ContinueWith method on both Task and Future<T>.  ContinueWith is, in effect, a callback, very much like events in .NET.  With events, a causal action results in the event being raised, which by default triggers all of the delegates registered ...

Coordination Data Structures Overview

June 18, 2008 Jun 18, 2008 06/18/08
Emad Omara
The June 2008 CTP of Parallel Extensions provides the first look at its 3rd major piece, a set of coordination data structures we lovably refer to as CDS. It contains lightweight and scalable thread-safe data structures and synchronization primitives.  There are of course already many synchronization primitives present in the System....

More Channel 9 Parallel Extensions Goodness

June 7, 2008 Jun 7, 2008 06/7/08
Stephen Toub - MSFT
Charles from Channel 9 came over to building 112 last week for an in-depth look at what's new in the June 2008 CTP of Parallel Extensions.  We spoke on the subject for an hour and a half or so, which you can see in a two-part series that was posted to Channel 9 yesterday (by the way, Channel 9 team, the new site looks great!): What...