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

Libpciaccess Ported To Windows To Help Nouveau

Nouveau

Published on 28 January 2014 01:04 PM EST
Written by Michael Larabel in Nouveau
3 Comments

The generic PCI access library (libpciaccess) used on Linux and other POSIX platforms by the X.Org Server and other components has now been ported to Windows via Cygwin. This porting to Windows was done to help in the Nouveau open-source NVIDIA reverse-engineering process.

Samuel Pitoiset is the former Google Summer of Code developer on the Nouveau project that was working on basic compute support as part of his broader project for Nouveau to support performance counters and provide an open-source NVPerfKit for Linux.

NVIDIA's NVPerfKit performance tools are Windows-only so Samuel Pitoiset ended up having to do some reverse-engineering work on Windows for understanding the NVIDIA hardware counters. The tool used by Nouveau for reverse-engineer, EnvyTools, depends upon libpciaccess for interfacing with the graphics card. So in turn he ported libpciaccess to Windows/Cygwin to run the Nouveau EnvyTools reverse-engineering programs on Windows.

This work was successful in helping him understand the performance counters on the NVIDIA Tesla. The Windows/Cygwin support uses the WinIO library and has now been merged to master in upstream libpciaccess. More details on this work can be found via Samuel's blog post.

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. Even With Re-Clocking, Nouveau Remains Behind NVIDIA's Proprietary Linux Driver
  2. The Power Consumption & Efficiency Of Open-Source GPU Drivers
  3. AMD R600g/RadeonSI Performance On Linux 3.16 With Mesa 10.3-devel
  4. Intel Pentium G3258 On Linux
Latest Linux Articles
  1. AMD Catalyst 14.6 Does Slightly Better With APITest OpenGL Tests
  2. Updated Source Engine Benchmarks On The Latest AMD/NVIDIA Linux Drivers
  3. Nouveau vs. Radeon vs. Intel Tests On Linux 3.16, Mesa 10.3-devel
  4. KVM Benchmarks On Ubuntu 14.10
Latest Linux News
  1. Fedora Assembles A Security Team
  2. AMD Launches The A10-7800, The 65 Watt Kaveri
  3. Builder: A New Development IDE Being Built For GNOME
  4. GDB 7.8 Betters Python Scripting, Adds Guile Support
  5. GNOME's GTK+ Is Still Striving For A Scene Graph, Canvas API
  6. Unreal Tournament Looks Great For Team Deathmatch
  7. LibreOffice 4.3 Released With Many Exciting Changes
  8. GNOME/GTK On Wayland Gains Focus At GUADEC
  9. GNOME Stakeholders Take Issue With Groupon Over their Gnome
  10. GStreamer VA-API Plug-In Update Adds New Features
Latest Forum Discussions
  1. Grand Theft Auto Running On Direct3D Natively On Linux Shows Gallium3D Potential
  2. AMD Publishes Open-Source Linux HSA Kernel Driver
  3. Linus Torvalds On GCC 4.9: Pure & Utter Crap
  4. Debian + radeonsi
  5. Open-source drivers on ATI R7 260X
  6. AMD Athlon 5350 APU On Linux
  7. Updated and Optimized Ubuntu Free Graphics Drivers
  8. List of Linux friendly Kickstarter projects