1. Computers
  2. Display Drivers
  3. Graphics Cards
  4. Memory
  5. Motherboards
  6. Processors
  7. Software
  8. Storage
  9. Operating Systems


Facebook RSS Twitter Twitter Google Plus


Phoronix Test Suite

OpenBenchmarking Benchmarking Platform
Phoromatic Test Orchestration

Intel Ships Open-Source OpenMP Runtime For LLVM

Compiler

Published on 08 October 2013 08:55 AM EDT
Written by Michael Larabel in Compiler
4 Comments

While LLVM's Clang C/C++ compiler has made amazing progress in recent times, one of the features it's sorely been missing has been OpenMP support to allow it to better compete with GCC in many multi-threaded workloads. There's been numerous projects to work on OpenMP support in LLVM/Clang and most recently Intel has been taking up the work. Intel's latest announcement in the area is that they have decided to open-source their own OpenMP Runtime as a new LLVM sub-project.

For many months now Intel has had some of their compiler engineers working on OpenMP support for LLVM/Clang after attempts in the past by other parties haven't brought mainlining of any support. In August they announced OpenMP 3.1 support for LLVM Clang in an out-of-tree code-base.

The OpenMP 3.1 code has yet to be mainlined in full but that's Intel's ambition. Intel's OpenMP Clang work actually builds upon work originally started by AMD to achieve the same goal. Aside from the compiler support, there's also the run-time library needed for OpenMP. In getting that effort cleared, Intel decided to ship a copy of their Intel Open-Source OpenMP Run-Time as a new LLVM sub-project. This OpenMP run-time support is dual-licensed under the MIT and UIUC (BSD-like) license. OpenMP 4.0 support is planned in the future and this implementation should already be high-performance and have ABI compatibility with GCC and Intel's own ICC compiler.

There's still some work ahead for this run-time as right now it requires building under GCC or ICC while obviously it will need to be build-able under Clang. The new LLVM OpenMP sub-project site is openmp.llvm.org. Intel's open-source OpenMP run-time site is OpenMPRTL.org where they have had code for some time but is now moving to LLVM as a new sub-project.

Jim Cownie of Intel announced their open-source contribution via the LLVM project blog.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
Latest Linux News
  1. Radeon & AMDGPU DRM Fixes Queue Up For Linux 4.2
  2. KDE Applications 15.04.3 Fixes Bugs
  3. Benchmarks Of 54 Different Intel/AMD Linux Systems
  4. Linux 4.2 Bringing Support For ARCv2, HS38 CPU Cores
  5. Libdrm 2.4.62 Is An Important Update For Open-Source GPU Drivers
  6. The State of Unity 3D Game Engine, Editor On Linux
  7. ZFS On Linux 0.6.4.2 Brings Linux 4.1 Support, Fixes
  8. Old Net Burst Tests, Ubuntu Phone & Assembly x86 Were Popular Topics Last Month
  9. Qt 5.5 Officially Released
  10. Global Shortcuts In KDE Plasma Under Wayland
Latest Articles & Reviews
  1. How KDE VDG Is Trying To Make Open-Source Software Beautiful
  2. Attempting To Try Out BCache On The Linux 4.1 Kernel
  3. CompuLab's Fitlet Is A Very Tiny, Fanless, Linux PC With AMD A10 Micro
  4. AMD A10-7870K Godavari: RadeonSI Gallium3D vs. Catalyst Linux Drivers
Most Viewed News This Week
  1. Kubuntu 15.10 Could Be The End Of The Road
  2. KDBUS Won't Be Pushed Until The Linux 4.3 Kernel
  3. The State & Complications Of Porting The Unity Editor To Linux
  4. The Staging Pull For Linux 4.2: "Big, Really Big"
  5. Latest Rumor Pegs Microsoft Wanting To Buy AMD
  6. SteamOS "Brewmaster" Is Valve's New Debian 8.1 Based Version
  7. Exciting Features Merged So Far For The Linux 4.2 Kernel
  8. ARM Posts Pictures Of AMD's New Development Board