OpenMP Application Programming Interface Standard Version 5.0

The collection of compiler directives, library routines, and environment variables described in this document collectively define the specification of the OpenMP Application Program Interface (OpenMP API) for parallelism in C, C++ and Fortran programs.

This specification provides a model for parallel programming that is portable across architectures from different vendors. Compilers from numerous vendors support the OpenMP API. More information about the OpenMP API can be found at the following web site

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The directives, library routines, environment variables, and tool support defined in this document allow users to create, to manage, to debug and to analyze parallel programs while permitting portability. The directives extend the C, C++ and Fortran base languages with single program multiple data (SPMD) constructs, tasking constructs, device constructs, worksharing constructs,and synchronization constructs, and they provide support for sharing, mapping and privatizing data. The functionality to control the runtime environment is provided by library routines and environment variables. Compilers that support the OpenMP API often include a command line option to the compiler that activates and allows interpretation of all OpenMP directives.