New .NET Compiler Hits CTP 2

It will eventually replace the JIT64 compiler, allowing for faster program starts.

Microsoft's new, 64-bit Just-In-Time (JIT) compiler has reached the next milestone in its development, with the release of the second Community Technology Preview (CTP).

CTP 2 of RyuJIT was announced on the .NET Framework Blog today. RyuJIT replaces the older JIT64 compiler, and will ultimately help programs compile and run faster, with better compiling throughput and higher code quality.

RyuJIT CTP1 "received a thunderous response," according to the blog's author, Mani Ramaswamy, Program Manager for the .NET Dynamic Code Execution Team. It was released last September, to overcome some limitations in the previous compiler; the blog states that "The 64-bit JIT currently in .NET isn't always fast to compile your code, meaning you have to rely on other technologies such as NGen or background JIT to achieve fast program startup."

The CTP 2 iteration of RyuJIT "...generates code that's on average better than the existing JIT64, while it continues to maintain the 2X throughput wins over JIT64," the blog states. It also adds to new features: "opportunistic" tail calls and Edit & Continue. The .NET Code Generation team has also made CTP 2 faster and more optimized, as well as fixing every bug that was found or reported. " this point, RyuJIT doesn't have any known bugs," Ramaswamy blogged.

One issue that some developers had with CTP 1 was that it only worked on Windows 8.1 (and Windows Server 2012 R2). Those developers will remain unhappy, as CTP 2 has the same limitations.

RyuJIT CTP 2 is available for download now. Developers using it should remember that it's not production-ready yet, so it should not be used in that environment. No date was given or implied in the blog for when future previews of the compiler would be available.

About the Author

Keith Ward is the editor in chief of Virtualization & Cloud Review. Follow him on Twitter @VirtReviewKeith.

comments powered by Disqus


  • Visual Studio Code Dev Team Cleans Up

    The Visual Studio Code development team focused on some housekeeping in the October update, closing more than 4,000 issues on GitHub, where the cross-platform, open-source editor lives.

  • ML.NET Model Builder Update Boosts Image Classification

    Microsoft announced an update to the Model Builder component of its ML.NET machine learning framework, boosting image classification and adding "try your model" functionality for predictions with sample input.

  • How to Do Naive Bayes with Numeric Data Using C#

    Dr. James McCaffrey of Microsoft Research uses a full code sample and screenshots to demonstrate how to create a naive Bayes classification system when the predictor values are numeric, using the C# language without any special code libraries.

  • Vortex

    Open Source 'Infrastructure-as-Code' SDK Adds .NET Core Support for Working with Azure

    Pulumi, known for its "Infrastructure-as-Code" cloud development tooling, has added support for .NET Core, letting .NET-centric developers use C#, F# and VB.NET to create, deploy, and manage Azure infrastructure.

  • .NET Framework Not Forgotten: Repair Tool Updated

    Even though Microsoft's development focus has shifted to the open-source, cross-platform .NET Core initiative -- with the aging, traditional, Windows-only .NET Framework relegated primarily to fixes and maintenance such as quality and reliability improvements -- the latter is still getting some other attention, as exemplified in a repair tool update.

.NET Insight

Sign up for our newsletter.

Terms and Privacy Policy consent

I agree to this site's Privacy Policy.

Upcoming Events