Showing category results for .NET Parallel Programming

Several months ago, Microsoft announced for academic customers the availability of DryadLINQ.  DryadLINQ is a LINQ provider developed by Microsoft Research that enables  .NET developers to use the LINQ programming model for writing distributed queries and computations against a cluster of computers using Windows HPC Server. DryadLINQ enab...

Are you using the CCR (Microsoft Robotics' "Concurrency & Coordination Runtime") today in production applications or libraries, and in particular for non-robotics purposes?  If so, we’d love to hear about your experiences, and any and all information you’re willing to share would be very welcome.  What do you like about it...

(This answer is based on the .NET Framework 4.  As the details below are undocumented implementation details, they may change in future releases.)No.  All of the collections in the new System.Collections.Concurrent namespace employ lock-free techniques to some extent in order to achieve general performance benefits, but traditional locks ...

All of these terms are overloaded, even in the context of parallel computing.  However, we’ve used them extensively to describe how well our parallel algorithms and demo applications work.  And sometimes, we throw them around carelessly on the blog, forums, etc., so here are our general definitions.Performance is an attribute that r...

The following code correctly observes and handles a Task exception and should print “gotcha!” to the console.  By default though, the Debugger will report a crash.Task t = Task.Factory.StartNew(() => { throw new Exception("poo"); }); try { t.Wait(); } catch (AggregateException) { Console.WriteLine("gotcha!"); } The issue has to ...

ConcurrentDictionary<TKey,TValue> is a new type in the .NET Framework 4, living in the System.Collections.Concurrent namespace.  As noted in the MSDN documentation, ConcurrentDictionary “represents a thread-safe collection of key-value pairs that can be accessed by multiple threads concurrently.”  While ConcurrentDiction...

We’ll be regularly posting answers to frequently asked questions that we’ve gotten on the forum, internal email lists, etc.  Here’s the first – enjoy! Why is the speedup not X on my X-way machine?  Or, why does my parallel code run slower?  Less than ideal speedup can typically be attributed to two things: 1.    &...

On Code Gallery, we have a plethora of samples that highlight aspects of the .NET Framework 4 that help with writing scalable and efficient parallel applications.  This post examines each of those samples, providing an overview of what each provides.

We've refreshed our samples for parallel programming with the .NET Framework 4.  Thanks to the gracious assistance of the fabulous Lisa Feigenbaum and others on the Visual Basic team, in this refresh the majority of the samples are now available not only in C# but also in Visual Basic. The samples are available for download at https://code.msd...

Check out the updated Parallel Computing Developer Center on MSDN.  Both the look and the content have been revised significantly… Enjoy!