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.org

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 Hardware Reviews
  1. MSI X99S SLI PLUS On Linux
  2. NVIDIA GeForce GTX 970 Offers Great Linux Performance
  3. CompuLab Intense-PC2: An Excellent, Fanless, Mini PC Powered By Intel's i7 Haswell
  4. From The Atom 330 To Haswell ULT: Intel Linux Performance Benchmarks
Latest Linux Articles
  1. RunAbove: A POWER8 Compute Cloud With Offerings Up To 176 Threads
  2. 6-Way Ubuntu 14.10 Linux Desktop Benchmarks
  3. Ubuntu 14.10 XMir System Compositor Benchmarks
  4. Btrfs RAID HDD Testing On Ubuntu Linux 14.10
Latest Linux News
  1. Fedora 21 Beta & Final Release Slip Further
  2. Mesa 10.3.2 Has A Couple Bug-Fixes
  3. RadeonSI/R600g HyperZ Support Gets Turned Back On
  4. openSUSE Factory & Tumbleweed Are Merging
  5. More Fedora Delays: Fedora 21 Beta Slips
  6. Mono Brings C# To The Unreal Engine 4
  7. Coreboot Now Has Support For Intel Broadwell Hardware
  8. Enlightenment's EFL 1.12 Alpha Has Evas GL-DRM Engine, OpenGL ES 1.1 Support
  9. GTK+ Lands Experimental Backend For Mir Display Server
  10. Ubuntu 14.10 Officially Released
Latest Forum Discussions
  1. HOPE: The Ease Of Python With The Speed Of C++
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Ubuntu 16.04 Might Be The Distribution's Last 32-Bit Release
  4. Linux hacker compares Solaris kernel code:
  5. Advertisements On Phoronix
  6. Users/Developers Threatening Fork Of Debian GNU/Linux
  7. AMD Releases UVD Video Decode Support For R600 GPUs
  8. Proof that strlcpy is un-needed