Intel® oneAPI DPC++/C++ Compiler

A Standards-Based, Cross-architecture Compiler

Future-Ready Programming Model Provides Freedom of Choice

What You Can Do

  • Compile ISO C, C++, and SYCL* (from the Khronos* Group)
  • Reuse code across hardware targets, including CPUs, GPUs, and FPGAs.
  • Avoid proprietary lock-in with a cross-industry, open, standards-based unified programming model.

Learn More about SYCL

 

Realize All the Hardware Value

  • Get great performance from industry-leading Intel® compiler technology.
  • Generate optimized binary host code and accelerator code.
  • Use optimized Intel oneAPI performance and threading libraries.

Learn More about Intel® Tools

 

Confidently Develop Performant Code Quickly and Correctly

  • Integrate seamlessly with popular third-party compilers, development environments, and operating systems.
  • Use the latest standards including C 23, C++ 23, SYCL 2020, and OpenMP* 5.0, 5.1, and 5.2 for CPU and GPU offload, and the select release of OpenMP TR12.†
  • Use LLVM* sanitizers to catch bugs and issues early in the development cycle, making C, C++, SYCL, OpenMP code more reliable, secure, and easier to maintain.

 

Develop on a Variety of GPUs

Develop and run applications on Intel GPUs or use plug-ins from Codeplay* to develop on AMD* or NVIDIA* GPUs.

AMD Plug-in

NVIDIA Plug-in

 

Download as Part of a Toolkit

Get the compiler in any of these toolkits.

 

Intel® oneAPI Base Toolkit

Intel® HPC Toolkit

 

Develop in the Cloud

Build and optimize oneAPI multiarchitecture applications using the latest Intel-optimized oneAPI and AI tools, and test your workloads across Intel® CPUs and GPUs. No hardware installations, software downloads, or configuration necessary.

For FPGA and People's Republic of China (PRC) Based Developers

Download the Stand-Alone Version

A stand-alone download of the Intel® oneAPI DPC++/C++ Compiler is available. You can download binaries from Intel or choose your preferred repository.

      

Runtime Version

Help the Intel oneAPI DPC++/C++ Compiler Evolve

This compiler is part of the open oneAPI industry standards initiative. You are welcome to participate.
 

Specification

Open Source Compiler (GitHub*)

Cross-architecture Compiling

  • Development Productivity: Targets CPUs and accelerators through single-source code while permitting custom tuning
  • Language Standards Support: Is built to the latest standards, including C++ 17, C++ 20, and SYCL 2020†, and partial support for C++ 23, to ensure portability and support of features like generic lambda expressions and variable templates: SYCL Graph, Bindless Texture, Vulkan, and Microsoft DirectX* interoperability
  • Industry Standards Support: Supports the latest standards, including OpenMP 4.5, 5.0, 5.1, and 5.2 for CPU and GPU offload, and select new features of OpenMP TR12†
  • Trusted Technology: Uses well-proven LLVM compiler technology as well as Intel's history of compiler leadership

†Available in the Intel oneAPI DPC++/C++ Compiler only.

Learn More about the Intel® oneAPI DPC++ Library

FPGA Emulation and Compilation

  • Enables experienced FPGA developers to target accelerations workloads to field-programmable platforms
  • Is included with the compiler 

Note  Full FPGA programming requires the optional Intel® FPGA Add-on for the oneAPI Base Toolkit.

Learn More

Benchmarks

Part 1: Intel Compilers Boost C++ Application Performance on Linux

Part 2: Intel Compilers Boost C++ Application Performance on Linux

Intel Compilers Perform on C++ Embedded Applications

Intel Compilers Boost C++ Application Performance (Single Thread) on Linux

Part 1: Intel Compilers Boost C++ Application Performance on Windows

Part 2: Intel Compilers Boost C++ Application Performance on Windows

Documentation & Code Samples

Documentation

View Current Intel oneAPI DPC++/C++ Compiler Documentation

View Legacy Intel C++ Compiler Documentation

Code Samples

C++ with SYCL* for GPU Offload

Simple-Add Programming Methods
A Hello-World-type sample adds two large vectors of integers and verifies the results. Learn how the most basic code in C++ offloads computations to a GPU using Unified Shared Memory (USM) and buffers.

Sepia Filter
Convert a color image to a monochromatic sepia tone image by offloading each compute-intensive pixel conversion using C++ with code that's compliant with SYCL for CPUs and GPUs.

Mandelbrot
Learn how to use C++ with code that's compliant with SYCL for offloading computations to a GPU. Optimize and improve processing time using parallelism.

C++ and OpenMP*

Accelerate Mandelbrot with OpenMP
Learn how to accelerate program performance with Single Instruction Multiple Data (SIMD) and parallelization using OpenMP to calculate the Mandelbrot set.

Use ISO3DFD for OpenMP Offload
ISO3DFD is a 3D stencil that simulates wave propagating in a 3D isotropic medium. Use it to understand common challenges and techniques when targeting OpenMP Offload devices, like GPUs.


FPGA Samples

Get Started
This tutorial shows how to compile code for FPGAs that is compliant with SYCL by using a simple vector addition.

Database Acceleration
This reference design demonstrates how to use an FPGA to accelerate database queries for a data-warehouse schema derived from the TPC-H* benchmark.

Stream I/O Channels with Minimum Variance Distortionless Response (MVDR) Beamforming
This reference design demonstrates how to use I/O streaming using SYCL on an FPGA for a large system.

Gzip Compression
Use this reference design to implement a compression algorithm optimized for FPGAs.

QR Decomposition of Matrices
This reference design demonstrates high-performance QR decomposition of real and complex matrices on an FPGA.

 

DPC++ FPGA Code Samples Navigation Guide

View oneAPI Samples Catalog

 

How to work with code samples:

News & Case Studies

Tencent Gains Up to 85% Performance Boost for MySQL

"TencentDB for MySQL is designed to provide customers with secure, reliable, high-performance, and easy-to-maintain enterprise-level cloud database services. And Intel oneAPI DPC++/C++ Compiler can bring Tencent another avenue to get better MySQL performance."

— Ben Cheng, TencentDB

Alibaba Cloud* E-HPC-DP: A Winning E-HPC Cloud Collaboration

E-HPC provides individual users, education and research institutions, and public institutions with a fast, elastic, and secure cloud compute platform. With the Intel toolkit, E-HPC can help customers build a high-performance, profiling computing platform on Intel® Xeon® Scalable processors.

Specifications

Intel oneAPI DPC++/C++ Compiler

Processors:
  • Intel Xeon Scalable processors
  • Intel Xeon processors
  • Intel Core processors
  • Intel Atom processors
GPUs:
  • Intel® UHD Graphics for 11th generation Intel processors or newer
  • Intel® Iris Xᵉ graphics or newer
  • Intel® Arc™ A-Series graphics
  • Intel® Data Center GPU Flex Series
  • Intel® Data Center GPU Max Series
FPGAs:
  • Intel® Programmable Acceleration Card with Intel® Arria® 10 GX FPGA
  • Intel® Stratix® 10 FPGA
  • Intel® Agilex™ FPGA
Host and target operating systems:
  • Windows
  • Linux
Languages:

For more information, see the system requirements.


  

Development environments:
  • Microsoft Visual Studio*, Microsoft Visual Studio Code
  • Eclipse* IDE

Threading:

 

†OpenMP host and offload support is available only in the Intel oneAPI DPC++/C++ Compiler

Get Help

Your success is our success. Access these support resources when you need assistance.

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