acad.exe used two GPU

[1121405143]

I have two nvidia graphics cards, both M4000. I want to set autcad to occupy the second graphics card. I have already set it in the NVIDIA control panel, but when checking through "nvidia-smi", the same process acad.exe occupies both graphics cards. Why?

[pendean]

@1121405143 Windows11? You will need to contact NVIDIA support, your topic has nothing to do with AutoCAD (topic of this forum).

[1121405143]

Windows version: window server 2022  (Microsoft Windows [ 10.0.20348.707]) 

AutoCad version: 2021

The reason why I didn't seek NVIDIA support is that in autocad, one process ID occupies 0 and the other occupies 1. Is this caused by a special mechanism in AutoCad

[pendean]

Windows Server is not a supported OS, sorry, no fix from Autodesk. You need NVidia or Microsoft Support (unless they too tell you you are using an unsupported OS)

And to pre-empt your next question, not even in AutoCAD 2026

[1121405143]

As you said, I also did the same operation on windows 10 and the result was the same
In addition, I also sought support from Nvidia. They hoped that I would look for autocad