Q100071: How to disable GPU Acceleration to help diagnose issues in Nuke

SUMMARY

This article explains how to disable GPU usage in Nuke's GPU-accelerated nodes by utilizing the FN_NUKE_DISABLE_GPU_ACCELERATION environment variable. This can assist in troubleshooting crashes and performance-related issues.

MORE INFORMATION

If you are experiencing crashes in Nuke, performance issues, or failures to launch the application, then we would recommend disabling the GPU to test whether the graphics card might be a possible cause. The steps to do this for each platform are below.
 

Windows: 

Open a Command Prompt and set the following environment variable:

set FN_NUKE_DISABLE_GPU_ACCELERATION=1
 

Then launch Nuke by running the following command:

"C:\Program Files\Nuke17.0v4\Nuke17.0.exe"

macOS:

Open a terminal and set the following environment variable:

export FN_NUKE_DISABLE_GPU_ACCELERATION=1
 

Then launch Nuke by running the following command:

/Applications/Nuke17.0v4/Nuke17.0v4.app/Contents/MacOS/Nuke17.0

Linux:

Open a terminal and set the following environment variable:

export FN_NUKE_DISABLE_GPU_ACCELERATION=1
 

Then launch Nuke by running the following command:

/usr/local/Nuke17.0v4/Nuke17.0
 

All GPU accelerated nodes in Nuke should now show that the Local GPU is Not available: