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. NVIDIA GeForce GTX 980: The Best GPU For Linux Gamers
  2. ROCCAT LUA: A Linux-Friendly Gaming Mouse
  3. Cheetah Mounts: The Affordable Way To Put Your TV On The Wall
  4. Scythe Mugen MAX
Latest Linux Articles
  1. Preview: Radeon Gallium3D Performance For CS:GO On Linux
  2. XWayland Linux Gaming Performance With GNOME Wayland On Fedora 21
  3. EXT4/Btrfs/XFS/F2FS Benchmarks On Linux 3.17
  4. Fedora 21 Alpha First Impressions: It's Great
Latest Linux News
  1. KDE Plasma 5.1 Now In Beta
  2. Systemd & Debian Were Most Popular In September
  3. Microsoft Announces... Windows 10 With A Start Menu
  4. Borderlands 2 Launches On Steam For Linux
  5. Debian Jessie Might Get Rid Of The kFreeBSD Port
  6. Fedora Might Try A New Scheduling Strategy For Its Releases
  7. AMD's Catalyst Working On A GLSL Shader Cache
  8. OpenMP 4.0 Offloading Is Closer For GCC 5
  9. Wayland Presentation Extension Added To Weston
  10. Intel Skylake Support Rolls Out To Mesa's DRM
Latest Forum Discussions
  1. Updated and Optimized Ubuntu Free Graphics Drivers
  2. Nero CD/DVD Burning Software On Linux Is Dead
  3. New Group Calls For Boycotting Systemd
  4. FSF Issues Statement On Shellshock Bash Vulnerability
  5. X.Org Women Outreach Program Only Turns Up Two Applicants So Far
  6. X.Org Is Looking For Some Female Help
  7. Advertisements On Phoronix
  8. NVIDIA Alerts Nouveau: They're Starting To Sign/Validate GPU Firmware Images