Welcome to Threading Building Blocks.org!

Intel® Threading Building Blocks (Intel® TBB) offers a rich and complete approach to expressing parallelism in a C++ program. It is a library that helps you take advantage of multi-core processor performance without having to be a threading expert. Intel TBB is not just a threads-replacement library. It represents a higher-level, task-based parallelism that abstracts platform details and threading mechanisms for scalability and performance. 

May 14, 2012: New documentation uploaded onto the site.

We glad to inform you that Intel® TBB Reference Manual is available in HTML format. Welcome to use it!
Also doxygen documentation was updated on the site. Please update bookmarks.
And, as usual, all PDFs were synchronized with the latest update.

April 28, 2012: Intel® Threading Building Blocks 4.0 Update 4 Available Today

Files are available in tbb40_20120408oss stable release.   Download it!

Some CHANGES:

- The TBB memory allocator transparently supports large pages on Linux.
- A new flow_graph example, logic_sim, was added.
- Support for DirectX* 9 was added to GUI examples.

Open-source contributions integrated:
- Multiple improvements by Raf Schietekat.
- Basic support for Clang on Mac OS X* by Blas Rodriguez Somoza.
- Fixes for warnings and corner-case bugs by Blas Rodriguez Somoza and Edward Lam.

More changes/comments on our forum.

March 14, 2012: Commercial-aligned and stable releases are being consolidated.

You have probably noticed that several recent Intel® TBB updates contain the same bits for commercial-aligned and stable releases. This was a consequence of reducing the release cycle time for commercial updates, causing commercial and commercial-aligned updates to appear more often.

We decided to consolidate the commercial-aligned and stable releases into a single, stable release starting with the next update. A new naming conversion will be available in the release timeframe, but we assume for now that it will be similar to that used by stable releases and there will be a comment explaining which Intel TBB commercial update corresponds to each stable version. 

These changes do not affect our development releases: they will be available on demand as usual.

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Check out who is having success using TBB here. If you have something you would like to say about TBB let us know by emailing us at tbb-users@lists.sourceforge.net.

For developers, the clear benefits of Threading Building Blocks are:

1. TBB significantly reduces the number of lines of code required to develop multithreaded applications;
2. TBB significantly reduces the programming complexity for developing multithreaded applications (by abstracting many details of thread management);
3. TBB's task manager automatically analyzes the system the software is running on, chooses the optimal number of threads, and performs load balancing that spreads out the work evenly across all processor cores;
4. As a result, TBB threaded applications automatically scale to fully utilize all available processing cores on whatever computer they run on -- including future systems that will have many more cores than are available (or affordable) today.

If you have experience developing multithreaded C++ software (new applications, or conversion of legacy applications for operation on multi-processor/multi-core systems), you owe it to yourself to experiment with Threading Building Blocks: try recoding a few sections of software you've threaded using traditional thread libraries, and notice the difference.

The links at the right provide access to TBB resources and means for you to participate in the Threading Building Blocks community. If you have a question, feel free to post it in the TBB forums. Use the top navigation bar to access TBB's documentation and download the stable or development releases. The articles below also provide a good introduction to TBB.

Thanks for visiting ThreadingBuildingBlocks.org. We hope this is just the beginning of your interest in TBB and your engagement in the Threading Building Blocks Open Source community.