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

CS Memory Accounting For Radeon Gallium3D

AMD

Published on 31 January 2013 03:00 PM EST
Written by Michael Larabel in AMD
6 Comments

With the Radeon Gallium3D driver (and Mesa/Gallum3D drivers in generally) finally moving on to properly handling more visually demanding and modern OpenGL games and other workloads, it's time for CS memory accounting to be implemented within the open-source driver.

Jerome Glisse implemented support today in R600g for basic CS memory usage accounting, per this commit. The memory usage accounting basically comes down to making sure what's submitted to the GPU doesn't end up going over the video RAM and GTT size. Right now the check is seeing that the submission doesn't go over 70% the GTT+vRAM size to allow for some memory fragmentation.

The commit description explains, " The idea is to compute a gross estimate of memory requirement of each draw call. After each draw call, memory will be precisely accounted. So the uncertainty is only on the current draw call. In practice this gave very good estimate (+/- 10% of the target memory limit)."

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. The MSI X99S SLI PLUS Is Working & Running Well On Linux
  2. NVIDIA GeForce GTX 980: The Best GPU For Linux Gamers
  3. ROCCAT LUA: A Linux-Friendly Gaming Mouse
  4. Cheetah Mounts: The Affordable Way To Put Your TV On The Wall
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. VA-API Gallium3D State Tracker Added Back To Mesa
  2. Radeon DRM Gets New Information Ioctl Queries
  3. Mir 0.8 Works On Less ABI Breakage, Touchspots, Responsiveness
  4. CS:GO For Linux Gains Better Stability, Community Server Support
  5. NVIDIA Issues Updated 340.46 Long-Lived Driver Release
  6. KDE Plasma 5.1 Now In Beta
  7. Systemd & Debian Were Most Popular In September
  8. Microsoft Announces... Windows 10 With A Start Menu
  9. Borderlands 2 Launches On Steam For Linux
  10. Debian Jessie Might Get Rid Of The kFreeBSD Port
Latest Forum Discussions
  1. Take the Steam Survey results with a grain of salt. It is flawed.
  2. X.Org Is Looking For Some Female Help
  3. Microsoft Announces... Windows 10 With A Start Menu
  4. NVIDIA Alerts Nouveau: They're Starting To Sign/Validate GPU Firmware Images
  5. Updated and Optimized Ubuntu Free Graphics Drivers
  6. Nero CD/DVD Burning Software On Linux Is Dead
  7. New Group Calls For Boycotting Systemd
  8. FSF Issues Statement On Shellshock Bash Vulnerability