Intel® oneAPI A Unified, Standards-Based Programming Model Based on the idea of "one source code for different systems", Intel supplies tools for the production of high-performance executables for different processor architectures. These can be CPUs, GPUs, FPGAs and other processor systems ("accelerators"). For programming these XPUs (generic abbreviation) Intel supplies a compiler system based on Data Parallel C++ (DPC++) and suitable libraries (oneAPI Libraries). DPC++ is an evolution of C++. In addition, analysis tools and debuggers are provided to make work easier, to find errors and to improve performance. Machinecode vs. Bytecode In contrast to the previous possibilities for cross-platform programming, which in most cases are based on scripts (e.g. PHP, JavaScript) or intermediate code (so-called bytecode; e.g. Java, C#) and which require a runtime environment or interpreter for execution, DPC++ generates compiled, processor-specific machine code that does not require the conversion of script or byte code into machine code during its execution. It is obvious that this offers a considerable performance advantage. In addition, Intel's DPC++ compiler system is equipped with processor-specific tuning options. Components of the Intel® oneAPI Toolkits Intel® oneAPI DPC++/C++ Compiler Compiler for C++, SYCL and DPC++ source code. Generates optimized binary code (for both the guest and the target system, e.g. accelerators) Intel® DPC++ Compatibility Tool Assistant for migrating from CUDA source code to DPC++ Intel® oneAPI DPC++ Library Collection of functions for high-performance parallel processing of data Intel® oneAPI Threading Building Blocks Another collection of functions for parallel programming Intel® VTune™ Profiler Analysis tool to find performance bottlenecks in your parallelised programs Intel® Advisor Assistant and advisor for improving the performance of your programs Intel® oneAPI Math Kernel Libra