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 Benchmarking Platform
Phoromatic Test Orchestration

Intel Pushes XenGT For GPU Access To Virtual Machines

Virtualization

Published on 27 March 2014 02:27 AM EDT
Written by Michael Larabel in Virtualization
8 Comments

Last month on Phoronix I wrote about Intel's new XenGT project as a means of mediated GPU pass-through to Xen-based guests. Today at the Linux Foundation Collaboration Summit is an update by an Intel engineer on the XenGT technology.

XenGT is a full GPU virtualization solution with mediated pass-through and on the VM side runs the system's native graphics driver for the targeted hardware. When it comes to Intel hardware, Haswell's Iris Graphics is their main focus along with next-generation Broadwell processors.

XenGT is designed just not for 3D graphics acceleration within guest instances but also for media acceleration and GPGPU compute acceleration. There's use-cases for XenGT within cloud computing, data centers, rich virtual clients, multi-screen infotainment, and other areas. With other Xen GPU pass-through solutions there is no ability for both the host and guest operating systems to each access the same GPU simultaneously but they must be independently assigned at this time as there isn't a guest virtual GPU driver as in the case of VMware SVGA2 or VirtualBox Chromium. With Intel's XenGT solution, however, there is sharing support -- multiple VMs can access the same graphics processor due to its full virtualization. XenGT is pushed as offering performance, features, and sharing capabilities.

Intel made a new release of XenGT this month that has stability improvements, supports guest resolution changes, enhances support for multiple displays and hot-plugs, and there is initial support for GPU recovery. For many OpenGL workloads, the performance of XenGT is 80%+ the host's solution while for some games it was just 60%+.

Those users of Xen virtualization that want to learn more about Intel's XenGT solution that will be presented in a few hours at the Linux Foundation Collaboration Summit, the slides can be viewed right now in PDF form via this link. I'm in Napa Valley at this annual, invite-only summit so stay tuned for additional coverage later today as the more exciting talks get underway.

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. GeForce GTX 750 Series: Nouveau vs. NVIDIA Linux Driver Performance
  2. GLAMOR + RadeonSI 2D Acceleration Is Quite Good For Open-Source AMD 2D Performance
  3. AMD Radeon R9 290 OpenGL On Ubuntu 15.04: Catalyst vs. RadeonSI Gallium3D
  4. Ubuntu 15.04 Offers Faster OpenGL For AMD Radeon GPUs On Open-Source
  5. Ubuntu 15.04 Brings Some Graphics Performance Improvements For Intel Haswell
  6. Sub-$20 802.11n USB WiFi Adapter That's Linux Friendly
Latest Linux News
  1. It's A Long Road Ahead To Get Ubuntu Snappy On The Desktop
  2. NetworkManager 1.0.2 Arrives As First Post-1.0 Release
  3. Libinput 0.15 Adds New Debug Events Utility
  4. Qt 5.5 Beta Is Coming Soon, Snapshot Released
  5. Steam Linux Usage Drops Below 1%
  6. Many OpenGL ES 3.1 Commits Land In Mesa
  7. HHVM 3.7 Brings More Performance Improvements
  8. Experimental DragonFlyBSD Code Adds Broadwell Graphics
  9. Virt-Manager 1.2.0 Brings OVMF/AAVMF Support For UEFI In VMs
  10. Interesting GSoC 2015 Projects: Wine D3DRM, GameStream, NaCL Fun
Most Viewed News This Week
  1. Trying Out Microsoft Visual Studio Code On Linux
  2. Microsoft Releases New Code IDE For Linux!
  3. Improvements On The Way For GNOME's Nautilus File Manager
  4. A Lot Of Improvements Are Coming For Mir 0.13, Including Work Towards Libinput
  5. Kodi 15.0 Beta 1 Released
  6. Mono 4.0 Makes Use Of Microsoft's Open-Source Code, C# 6.0
  7. Wayland 1.8 Alpha Release Delayed
  8. Lucid Sleep Support Is Being Worked On For The Upstream Linux Kernel