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. AMD's New Athlon/Semprons Give Old Phenom CPUs A Big Run For The Money
  2. 13-Way Low-End GPU Comparison With AMD's AM1 Athlon
  3. ASUS AM1I-A: A Mini-ITX Board For Socketed Kabini APUs
  4. Mini-Box M350: A Simple, Affordable Mini-ITX Case
Latest Linux Articles
  1. How Much Video RAM Is Needed For Catalyst R3 Graphics?
  2. Ubuntu 12.04 LTS vs. 14.04 LTS Cloud Benchmarks
  3. Ubuntu 12.04.4 vs. 13.10 vs. 14.04 LTS Desktop Benchmarks
  4. AMD OpenCL Performance With AM1 Kabini APUs
Latest Linux News
  1. Packard Bell LM85 Now Supported By Coreboot
  2. AmazonBasics External USB 2.0 DVD Writer For Linux
  3. TP-LINK TG-3468: A $12 Linux PCI-E Gigabit Network Adapter
  4. Linux 3.15 Lands Some DRM Graphics Driver Fixes
  5. AMD Is Disabling DPM Support For RV770 GPUs
  6. ReactOS Working On A Community Windows OS
  7. eRacks Keeps Pushing Linux, Open-Source Systems After 15 Years
  8. Borderlands Is Being Considered For Linux
  9. Mesa 10.0 & 10.1 Stable Get Updated
  10. Git 2.0 Test Releases Begin With Many Changes
  11. Wine 1.7.17 Works On Its Task Scheduler, C Run-Time
  12. The Improv ARM Board Still Isn't Shipping; Riding A Dead Horse?
Latest Forum Discussions
  1. The GNOME Foundation Is Running Short On Money
  2. Updated and Optimized Ubuntu Free Graphics Drivers
  3. Catalyst 14.3 Beta
  4. Suggestions about how to make a Radeon HD 7790 work decently?
  5. Radeon 8000M problematic on Linux?
  6. Linux Kernel Developers Fed Up With Ridiculous Bugs In Systemd
  7. After Jack Keane, RuseSoft will briing Ankh 3 to Linux through Desura
  8. Suspected PHP Proxy Issue