Parallel STL is an implementation of the C++ standard library algorithms with support for execution policies, as specified in ISO/IEC 14882:2017 standard, commonly called C++17. The implementation also supports the unsequenced execution policy specified in Parallelism TS version 2 and proposed for the next version of the C++ standard in the C++ working group paper P1001R1.

Parallel STL offers a portable implementation of threaded and vectorized execution of standard C++ algorithms, optimized and validated for Intel(R) 64 processors. For sequential execution, it relies on an available implementation of the C++ standard library.

The source code in this repository corresponds to the releases of Parallel STL with Intel(R) C++ Compiler or with Threading Building Blocks. The upstream source code repository for development has moved to LLVM, with the GitHub mirror at https://github.com/llvm-mirror/pstl.

To use Parallel STL, you must have the following software installed:

• C++ compiler with:
  • Support for C++11
  • Support for OpenMP* 4.0 SIMD constructs
• Threading Building Blocks (TBB) which is available to download in the GitHub repository

Here are the latest Changes and Release Notes (contains system requirements and known issues).

Parallel STL is licensed under Apache License Version 2.0 with LLVM exceptions.

See Getting Started with Parallel STL.

Please report issues and suggestions via LLVM Bugzilla, GitHub issues, or start a topic on the TBB forum.

If you want to contribute to the development, please do it via the upstream repository at LLVM. Read the LLVM Developer Policy for additional details. Pull requests to this repository are no more accepted.

• libc++ developers mailing list
• E-mail the TBB team

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* Other names and brands may be claimed as the property of others.