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  • Breaking Changes in the .NET ThreadPool

    When .NET 2.0 SP 1 was released with .NET 3.5, the thread pool underwent some significant changes. As Michael C. Kennedy discovered, not all were for the best.

  • Microsoft, Intel to invest $20M in parallel computing

    Microsoft and Intel have recently announced a $20 million joint investment into parallel computing over the next 5 years.

  • Common Ruby MVM API research kicked off

    Research on the topic of Multiple VM (MVM) Ruby will be conducted at the University of Tokyo together with Sun's JRuby team. The work will investigate issues such as communication between VMs and a common API across all Ruby implementations, with solutions provided initially for Ruby and JRuby.

  • Rubinius adds Multi-VM support

    Rubinius adds a new feature called "Multi-VM", which allows to run multiple Ruby VMs inside an OS process. We talked with Evan Phoenix of the Rubinius project about the benefits and implementation of this feature.

  • Programming for Parrallelism: The Parallel Hierarchies Pattern

    Multi-core processors offer new performance opportunities. Shekhar Borkar from Intel highlighted, however, that software development practices have to be retooled to leverage this potential. In this vein, Prof. Jorge L. Ortega-Arjona from the National Autonomous University of Mexico has recently introduced a new architectural pattern for parallel programming: Parallel Hierarchies pattern.

  • Ruby 1.9 adds Fibers for lightweight concurrency

    Fibers were recently in the Ruby 1.9 branch. The Coroutine-like concept has many uses, such as implementing lightweight concurrency and others. We look at the concept and influences of Fibers in Ruby 1.9, as well as code samples.

  • Rubinius Internals: Threading, ObjectSpace, Debugging

    We continue the interview with Rubinius creator Evan Phoenix and talk about internals of how the VM uses bytecode manipulation for fast debugging, problems of implementing ObjectSpace and Threading.

  • Interview: Ezra Zygmuntowicz on Engine Yard and Rails Deployment

    Exclusive InfoQ interview with Rails deployment guru Ezra Zygmuntowicz. The topics include scaling Rails, Ruby threading, and Ezra's venture Engine Yard, an interesting new Rails hosting service that employs Xen and virtualization to provide scalable service.

  • A Replacement for .NET's Flawed ReaderWriterLock

    Visual Studio 2007 will have a new lock called ReaderWriterLockSlim. According to Joe Duffy, in addition to being faster, it solves some of the nastier design flaws of its predecessor.

  • Parallel LINQ: add automatic multithreading to LINQ queries

    With multi-core CPUs finding their way into server farms and the desktop not far behind, new techniques to take advantage of them are desperately needed. Microsoft is seeking to address these with Parallel LINQ, a research project to add automatic multithreading to LINQ queries.

  • Multi-core Processors: Good or Bad for Java

    Two recent items on the internet have looked at the topic of multi-core processors and Java. A recent article by Randall Scarberry of JavaWorld.com looks at using the Java concurrency API to write multi-threaded algorithms. Billy Newport of IBM also recently written a blog post detailing how Java may not be well suited for multi-core processors.

  • Joe Duffy on Concurrency

    With dual and quad-core CPUs finding their way onto personal computers and 32-core processors predicted in the next 3 to 5 years, concurrency is becoming a major concern for developers. Joe Duffy, author of Professional .NET Framework 2.0 and the upcoming Concurrent Programming on Windows presents his opinions and recommendations for creating reusable, concurrent libraries in .NET.

  • CLR Hosting and Fibers

    The CLR can be hosted in a wide variety of environments. Out of the box these include Internet Explorer, IIS, and SQL Server 2005, and developers are free to create their own. Unfortunately, one thing they don't support is fibers.

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