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I was able to get some GPU virtualization working by following the steps shown on this site.

However, I do not understand what any of the values mean.

For example, I get the same output when running the resource checking script:

TotalVRAM               : 1000000000
AvailableVRAM           : 1000000000
MinPartitionVRAM        : 0
MaxPartitionVRAM        : 1000000000
OptimalPartitionVRAM    : 1000000000
TotalCompute            : 1000000000

But what does 1000000000 mean? If it was bytes, it seems strange for compute and RAM to be equal.

Also when looking at the script, although it works for me, I don't know how to modify it. e.g. what is-MinPartitionVRAM 1 and -MaxPartitionVRAM 11? Is it 1GB and 11GB?

$vm = "ENTER YOUR VM NAME HERE"
Remove-VMGpuPartitionAdapter -VMName $vm
Add-VMGpuPartitionAdapter -VMName $vm
Set-VMGpuPartitionAdapter -VMName $vm -MinPartitionVRAM 1
Set-VMGpuPartitionAdapter -VMName $vm -MaxPartitionVRAM 11
Set-VMGpuPartitionAdapter -VMName $vm -OptimalPartitionVRAM 10
Set-VMGpuPartitionAdapter -VMName $vm -MinPartitionEncode 1
Set-VMGpuPartitionAdapter -VMName $vm -MaxPartitionEncode 11
Set-VMGpuPartitionAdapter -VMName $vm -OptimalPartitionEncode 10
Set-VMGpuPartitionAdapter -VMName $vm -MinPartitionDecode 1
Set-VMGpuPartitionAdapter -VMName $vm -MaxPartitionDecode 11
Set-VMGpuPartitionAdapter -VMName $vm -OptimalPartitionDecode 10
Set-VMGpuPartitionAdapter -VMName $vm -MinPartitionCompute 1
Set-VMGpuPartitionAdapter -VMName $vm -MaxPartitionCompute 11
Set-VMGpuPartitionAdapter -VMName $vm -OptimalPartitionCompute 10
Set-VM -GuestControlledCacheTypes $true -VMName $vm
Set-VM -LowMemoryMappedIoSpace 1Gb -VMName $vm
Set-VM -HighMemoryMappedIoSpace 32GB -VMName $vm
Start-VM -Name $vm
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1 Answer 1

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Check out the official documentation at Learn/Windows/PowerShell/Reference/Hyper-V/Set-VMGpuPartitionAdapter

https://learn.microsoft.com/en-us/powershell/module/hyper-v/set-vmgpupartitionadapter?view=windowsserver2022-ps

It says:

-MaxPartitionVRAM is the maximum VRAM in bytes supported by the host GPU. This is defined by the manufacturer's driver.

and so on.

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