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oneAPI Programming Model
In heterogenous computing, the host processor takes advantage of accelerator devices to execute code more efficiently.
The oneAPI programming model supports two important portable methods of heterogenous computing: Data Parallel C++ with SYCL* and OpenMP* for C, C++, and Fortran.
SYCL is a cross-platform abstraction layer that enables code for heterogeneous processors to be written using standard ISO C++ with the host and kernel code for an application contained in the same source file. The DPC++ open source project is adding SYCL support to the LLVM C++ compiler. The Intel® oneAPI DPC++/C++ Compiler is available as part of the Intel oneAPI Base Toolkit.
OpenMP has been a standard programming language for over 20 years, and Intel implements version 5 of the OpenMP standard. The Intel oneAPI DPC++/C++ Compiler with OpenMP offload support is available as part of the Intel oneAPI Base Toolkit, Intel oneAPI HPC Toolkit, and Intel oneAPI IoT Toolkit. The Intel® Fortran Compiler Classic and Intel® Fortran Compiler with OpenMP offload support is available as part of the Intel oneAPI HPC Toolkit.
The next sections briefly describe each language and provide pointers to more information.
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