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Curious-Kid

1 Rookie

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3 Posts

84

March 31st, 2025 00:33

Dell PowerEdge and Nvidia A2 vGPU.

I have Dell PowerEdge T440 installed Windows server 2025. I am trying to

Partition and share GPUs with virtual machines on Hyper-V

and from my research Nvidia A2 is compatible, and all other prerequisites are met.

When I run Get-VMHostPartitionableGPU on PowerShell on different host running server 2019 it was giving me output. 

Installed Driver and is showing on Device Manager, also on "Get-PnPDevice -Class Display"
But when I run same command on Dell Host Server, it gives no output. 
Am I doing something wrong here?

Anyone successful on doing vGPU on server 2025?
Thank you.

Dell-Martin S

Moderator

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3.4K Posts

March 31st, 2025 12:38

It sounds like you're on the right track, but there might be a compatibility issue or configuration step missing with Server 2025 and the Nvidia A2 vGPU.

Since Get-VMHostPartitionableGPU returns nothing on your Dell server running Server 2025, here's a breakdown of potential issues and troubleshooting steps:

  1. Driver Compatibility: While the A2 is generally compatible, ensure you're using the absolute latest Nvidia drivers specifically certified for Server 2025. Older drivers might not expose the GPU correctly for partitioning.
  2. Nvidia vGPU Software License Server: A valid license is required to enable the vGPU functionality. Ensure the license server is running and accessible from your Server 2025 host.
  3. SR-IOV Support: Confirm that Single Root I/O Virtualization (SR-IOV) is enabled in the BIOS/UEFI settings of your Dell PowerEdge T440. This is crucial for GPU partitioning. Also confirm that you have enabled "Enable virtual Machine PCI device passthrough" on Bios.
  4. Hyper-V Configuration: Double-check that Hyper-V is correctly configured and running on Server 2025.
  5. Secure Boot: Sometimes Secure Boot settings can interfere with vGPU functionality. Try temporarily disabling Secure Boot in your BIOS to see if it resolves the issue.
  6. Server 2025 Compatibility: Although Server 2025 is the latest, there could be unforeseen compatibility issues with vGPU. Research if others have successfully implemented vGPU on Server 2025 with the A2. Check Nvidia forums and the Microsoft Hyper-V community.
  7. Event Logs: Examine the Windows Event Logs (especially System and Application logs) for any errors or warnings related to the Nvidia driver, vGPU, or Hyper-V.
  8. GPU-Partitioning Supported on the A2: While generally supported, double-check Nvidia's documentation to confirm the A2 specifically supports GPU partitioning in your intended configuration.
  9. DirectX: Make sure you have latest DirectX installed.

Troubleshooting Steps:

  • Driver Reinstallation: Completely uninstall the Nvidia driver (using DDU - Display Driver Uninstaller, in safe mode, is recommended) and then reinstall the latest certified driver for Server 2025.
  • BIOS Update: Ensure your Dell PowerEdge T440 has the latest BIOS/UEFI firmware installed.
  • Test on Server 2022 or 2019: If possible, try temporarily installing Server 2022 or 2019 on the T440 to see if vGPU works. This will help isolate whether the issue is specific to Server 2025.
  • Contact Nvidia Support: Reach out to Nvidia's support channels for assistance with vGPU configuration and troubleshooting. They can provide specific guidance for the A2 and Server 2025.

Have you checked the BIOS settings for SR-IOV and enabled "Virtual Machine PCI Device Passthrough"?

Curious-Kid

1 Rookie

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3 Posts

April 1st, 2025 23:26

@Dell-Martin S​ 

I realized that I had not installed the correct driver. In the NVIDIA Complete vGPU 18.0 (GPU-P) package for Microsoft Windows Server 2025, I noticed there was no executable file for the host installation. After some investigation, I managed to resolve the issue by updating the driver through Device Manager. I browsed to my computer for the driver and selected the appropriate driver folder: Host Drivers > Display Driver.

Once the correct driver was installed, I was able to successfully partition the GPU and assign it to the virtual machines.

Thank you, Dell-Martin, for your prompt response and guidance. It was extremely helpful!


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