starting with vGPU 18.0 finally Windows Server 2025 Hyper-V is supported with its GPU-Partition feature.
We are currently testing vGPU and have the 90 days trial licenses and a Nvidia L4 in combination with our Citrix Virtual Desktops systems. (SSOS Windows 10 VDI) The Nvidia License Server (3.4.1) has the test Licenses of type vWS which are eligable for both vWS (Q-Type vGPU) as well as vPC (B-Type vGPU).
Two weeks ago we successfully tested vGPU 17.5 with vSphere and there you could specify that the GPUs should be B-type vGPUs so vPC and everything worked as expected.
But with Windows Server 2025 Hyper-V GPU-P when Partition the L4 into 24 or 12 which equals 1GB or 2 GB sizes, the virtual GPUs inside the Citrix Virtual Desktop Sessions are automatically L4-1Q or L4-2Q instead of L4-1B or L4-2B. So they are activated as vWS instead of vPC.
Is there a possibility to enforce them to being vPC instead? Later on we want to run our system with vPC and therefore want to verify the performance as well the compatibility with vPC and not the more expensive and in our use-case unnecessary vWS licenses.
Sure, please check our documentation how to change the RegKey in Windows to switch the licensing from vWS to vPC. Unfortunately this is different with MSFT compared to other hypervisors.
The documentation only shows how to manually switch FeatureType between 0 (physical GPU or vApps) and 2 (vWS). It doesn’t state other values.
I tried a FeatureType value of 1 but it didn’t change the behaviour.
Do you know an documentation how to specifically select vPC?
Hi, you’re looking at the wrong document. You need to set the profile type in Hyper-V host:
2. Set the GridGpupProfileType DWord (REG_DWORD) registry value in the Windows registry key HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Control\Class\driver-key.
driver-key
The driver key for the GPU that you got in the previous step, for example, {4d36e968-e325-11ce-bfc1-08002be10318}\0001.
The value to set depends on the vGPU series that you want to be allowed on the GPU.
vGPU Series Value
Q-series 1
A-series 2
B-series 3