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.ExceptionsIn ...
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 => { &n...
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 are des...
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 for t...
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 this...
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 concur...
Visual Studio 2010 has new debugger windows to support the Task-based programming model. Check out my blog post about the Parallel Tasks window.
It’s very common in a parallel application to need random numbers for this or that operation. For situations where random numbers don’t need to be cryptographically-strong, the System.Random class is typically a fast-enough mechanism for generating values that are good-enough. However, effectively utilizing Random in a paral...
At PDC 2008 and TechEd EMEA 2008, Daniel Moth delivered several hit talks on parallel programming with the .NET Framework 4.0. The videos of both of those talks are available online, and he’s since created a series of blog posts capturing the content from those sessions in a way that should make it easy for others to re-present the cont...
It's been a hectic and exciting few weeks, and we on the Parallel Computing Platform team have been having a great time talking with customers all over the world, at the PDC, at TechEd EMEA, at DevConnections, through Channel 9, and more. A lot of the resulting material is now available online for viewing, so do check it out if you're interes...
