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Tags: nvidia   graphics   hybrid-graphics   nvidia-prime  
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Title: How NVIDIA On-Demand option works in NVIDIA X Server Settings?
ID: /2020/01/14/How-NVIDIA-On-Demand-option-works-in-NVIDIA-X-Server-Settings_
Created: January 14, 2020    Edited:  June 12, 2020
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From: Part I. Installation and Configuration Instructions

Chapter 35. PRIME Render Offload

PRIME render offload is the ability to have an X screen rendered by one GPU, but choose certain applications within that X screen to be rendered on a different GPU. This is particularly useful in combination with dynamic power management to leave an NVIDIA GPU powered off, except when it is needed to render select performance-sensitive applications.

The GPU rendering the majority of the X screen is known as the β€œsink”, and the GPU to which certain application rendering is β€œoffloaded” is known as the β€œsource”. The render offload source produces content that is presented on the render offload sink. The NVIDIA driver can function as a PRIME render offload source, to offload rendering of GLX+OpenGL or Vulkan, presenting to an X screen driven by the xf86-video-modesetting X driver.

X Server Requirements

NVIDIA’s PRIME render offload support requires the following git commits in the X.Org X server:

As of this writing, these commits are only in the master branch of the X.Org X server, and not yet in any official X.Org X server release.

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