User Guide


Intel® oneAPI Threading Building Blocks (oneTBB)

Intel® oneAPI Threading Building Blocks (oneTBB)
is a high-level parallel programming framework for C++ code that uses a template-based runtime library to help you harness the performance of multi-core processors.
lets you specify logical parallelism instead of threads. You specify potential parallelism - what can be run in parallel. The library decides the actual parallelism at run-time, matching it to the available hardware. The library has templates that simplify using high level parallel patterns such as parallel loops.
programs are implemented by a library that has been ported to multiple C++ compilers.
to write scalable programs that:
  • Specify parallel work instead of managing threads.
  • Emphasize data parallel programming.
  • Take advantage of high-level parallel patterns.
consists of header files and shared libraries, so it can be used with any C++ compiler.
Intel recommends that you consider using
for introducing parallelism into C++ programs. It has a small cost of entry and provides excellent initial performance with a lot of additional capabilities that can be used for future refinements.
It also has many powerful features that can make it possible to easily parallelize more places in your application. These features include:
  • Parallel algorithmic patterns
  • Concurrency-friendly containers
  • Scalable memory allocation
  • Synchronization primitives
  • Timing

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at