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 X.Org Driver Gets Hand-Tuning For SSE4, AVX2

Intel

Published on 26 February 2013 08:28 AM EST
Written by Michael Larabel in Intel
18 Comments

Chris Wilson at Intel has begun hand-tuning his SNA acceleration architecture within the Intel X.Org driver in order to take advantage of modern CPU instruction set extensions.

With commits that started getting pushed into the mainline xf86-video-intel driver repository over the night, Chris began making changes to the Intel driver to let it take advantage of more advanced instruction set extensions found on modern CPUs. The CPU capabilities are then checked at run-time so the most appropriate version of the hand-tuned code can be utilized.

The basic hot-spot code-paths are now optimized for SSE2 but he's added in separate code-paths for SSE 4.2 and AVX/AVX2 (Advanced Vector Extensions 2) at this time. SSE 4.2 dates back to Intel "Nehalem" CPUs while AVX was introduced with "Sandy Bridge" and AVX2 is coming with "Haswell" processors in the coming months.

Right now it appears the hot areas in the code where he's doing most of the tuning work is within the vertex programs. This should allow for slightly enhanced performance on modern Intel CPUs using this driver and the currently-experimental SNA back-end.

The latest SNA code activity within the driver can be found via this CGit query. Now to hope that the Intel SNA code finally replaces the UXA acceleration back-end, so all of this continued work by Chris Wilson won't go to waste.

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 Articles & Reviews
  1. AMD FX-8320E Performance On Linux
  2. Linux Compiler Benchmarks Of LLVM Clang 3.5 vs. LLVM Clang 3.6-rc1
  3. Intel Broadwell HD Graphics 5500: Windows 8.1 vs. Linux
  4. Linux Benchmarks Of NVIDIA's Early 2015 GeForce Line-Up
  5. NVIDIA GeForce GTX 960: A Great $200 GPU For Linux Gamers
  6. Disk Encryption Tests On Fedora 21
Latest Linux News
  1. Intel Broadwell On Linux Has Working OpenCL 1.2, VP8 Video Acceleration
  2. GParted 0.21 Brings ReFS Detection, EXT4 For RHEL5, Reiser4 For Linux 3.x
  3. Wine Staging Update Has Better CUDA Support, Driver Testing Framework
  4. Nouveau In Linux 3.20 Will Have A Lot Of Code Cleaning
  5. Compare Your Linux System To The i7-5600U Broadwell X1 Carbon ThinkPad
  6. Debian 8.0 "Jessie" Installer RC1 Released
  7. Chromebook "Rush" With 64-bit Tegra SoC Support Lands In Coreboot
  8. 2015 X.Org Elections Get Underway For Board Members, SPI Merger
  9. Linux 3.19-rc6 Kernel Released: LInux 3.19 Final In Two Weeks
  10. Ubuntu's Mir Gains Server-Side Platform Probing
Most Viewed News This Week
  1. Windows 10 To Be A Free Upgrade: What Linux Users Need To Know
  2. Google Admin Encourages Trying Btrfs, Not ZFS On Linux
  3. TraceFS: The Newest Linux File-System
  4. My Initial Intel Broadwell Linux Experience With The ThinkPad X1 Carbon
  5. Keith Packard Leaves Intel's Linux Graphics Work
  6. Interstellar Marines On Linux With Catalyst: Bull S*#@
  7. NetworkManager Now Supports WiFi Power Savings
  8. Faster VP9 Decoding Is On The Horizon