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 Gets AVX-512 Support Going In GCC

Compiler

Published on 10 February 2014 09:06 AM EST
Written by Michael Larabel in Compiler
5 Comments

The forthcoming release of the GCC 4.9 compiler will feature support for Advanced Vector Extensions 512 (AVX-512) although this instruction set extension won't be appearing on Intel CPUs for a while.

Advanced Vector Extensions 512 succeeds AVX2 from Haswell but isn't expected to make its debut in Intel processors until likely the launch of the "Skylake" processors in late 2015 or 2016. Being realized likely before the Skylake launch but out of reach to most Phoronix readers will be Intel's "Knights Landing" Xeon Phi that also supports AVX-512. The Knights Landing hardware is where AVX-512 capabilities should be fully realized.

AVX-512 has 32 vector registers that are 512-bit wide and supports 512-bit operations on packed floating point and integer data. AVX-512 also has a new EVEX coding scheme over AVX1/AVX2. The AVX-512 support that's been added to GCC this month is the inline assembly support, support for AVX-512's new registers and extending the existing registers, the intrinsics set, and basic auto-vectorization support. GCC adds a "-mavx512f" compiler switch for AVX_512 Foundation support, "-mavx512pf" for the AVX-512 pre-fetch instructions, "-mavx512er" for the AVX-512 exponential and reciprocal instructions, and "-mavx512cd" for AVX-512 conflict detection instructions.

More details on the AVX-512 support in GCC 4.9 can be found via this patch and the AVX GCC commit activity.

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. Acer B286HK: A 28-inch UHD LED 4K Monitor For As Low As $350
  2. Intel Xeon E5-1680 v3 & E5-2687W v3 Compared To The Core i7 5960X On Linux
  3. Intel 120GB 530 Series SSD Linux Performance
  4. Btrfs/EXT4/XFS/F2FS RAID 0/1/5/6/10 Linux Benchmarks On Four SSDs
Latest Linux Articles
  1. Mesa Git Yields Performance Improvements For Newer AMD GPUs
  2. Apple OS X 10.10 vs. Ubuntu 14.10 Performance
  3. Mesa 10.5-devel Brings Some Intel Haswell HD Graphics Changes Over Mesa 10.3
  4. NVIDIA vs. Nouveau Drivers With Linux 3.18 + Mesa 10.4-devel
Latest Linux News
  1. Wine 1.7.32 Updates Its Mono Engine
  2. Mesa 10.4 Release Candidate 3 Is Here For Weekend Testing
  3. GenodeOS 14.11 Now Supports Intel's Wireless Hardware
  4. Jolla Tablet Could Have Upgrades For MicroSDHC, Split Screen, 3.5G
  5. Intel Has Last Round Of DRM Changes For Linux 3.19, Starts Dropping DRI1/UMS
  6. Fedora 21 Release Candidate 1 Awaits Your Testing
  7. GCC 5 Adds Support For ARM's Cortex-A17
  8. KWayland Server Component Coming For KDE Plasma 5.2
  9. NVIDIA Posts Tegra Gallium3D Patch For K1+ Support
  10. Ubuntu 14.10 MacBook Air Tests With Linux 3.18, Mesa 10.5
Latest Forum Discussions
  1. Aliens vs predator for Linux
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Hurrican SDL Port
  4. Roadmap to Catalyst 14.10 ?
  5. how to configure module phoromatic ?
  6. PulseAudio 6.0 Is Coming & Other Linux Audio Plans For The Future
  7. Debian Developer Resigns From The Systemd Maintainership Team
  8. Cant get working Kaveri APU - A10-7850k