SlackBuildsOrg/libraries/tbb

Intel(r) 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.