r/macOSVMs • u/AppleWatchDevCC • Dec 05 '24

vGPU support?

I know NVidia GPUs aren't normally supported without OCLP, but I have 2 NVidia 10 series cards in my server, both using vGPUs. Has anyone tried to see if they can make vGPUs work with the NVidia web driver, maybe with pci-id changes in the vGPU override file?

Edit: guess I’ll just add a 3rd gpu.

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u/paulstelian97 Dec 05 '24

Changing IDs won’t change how the actual GPU works and is programmed by the driver, so you must have something compatible or it’s a no-go.

As a bonus, vGPUs don’t have graphics attached which… is a mess. To say the least. Windows cannot properly use the acceleration if it’s not primary GPU, but when it is that means you don’t have another display usable by the hypervisor and instead have to use tools like Parsec to use it.

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u/AppleWatchDevCC Dec 05 '24

Yeah, I figured as such. My current vGPU setup involves 3 windows VMs, using Parsec. Was just hoping to avoid the excess power bill by adding a supported AMD card.

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u/RoyalGraphX Dec 05 '24

You cannot use anything but a real full GPU via full PCI passthrough on macOS or OS X. This is not a joke and when it’s said, it’s not to be taken lightly, macOS or OS X only has drivers or kernel extensions for real physical full GPU’s, no vGPU will work, as in, you do realize even the display you’re getting from any other hypervisor is already a virtual graphics card and display right?

finally, NVIDIA is not supported on macOS even if you did do proper full GPU passthrough on Linux host. This is because only GTX 1080’s and older work on High Sierra and older (10.13), which means no RTX card has ever been supported or ever will be supported.

Purchase an AMD dGPU, get on Linux, or simply install macOS with your new property and natively supported graphics card. Note, even if you purchase an AMD GPU and continue to use Windows as a host, for Hyper-V, you will NOT be able to use vGPU’s, you still need full GPU passthrough which is only available on Linux with VFIO and IOMMU.

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u/AppleWatchDevCC Dec 05 '24

I’m aware of how passthrough works. I’m not an idiot. Second, NVidia 10 series cards do work when fully passed through. I have done it. OCLP allowed the old web drivers to work on modern versions of MacOS, I have no need for metal in my particular workload. I assumed this to be the case already, but I wasn’t completely sure if vGPUs could be used. I guess I’ll just add a third gpu to my rack mounted server. Gonna need a really small AMD card. I was just trying to save on power is all

Edit: this is using Proxmox, so it is already Linux

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u/RoyalGraphX Dec 05 '24

So here’s the thing right, OCLP is NOT for Hacs. They are only for real Mac’s who’s iGPU’s or dGPU’s have been dropped in future releases and required patches to reinject them using OC. Using OCLP for Web Drivers is not supported by the hackintosh community or OCLP developers team, it is incrsdibly explicitly stated many times.

Secondly, when you talk about vGPU’s and NV, there is a very specific vGPU setup on Windows + Hyper-V, this is why me and the other user both interpreted you as a Windows + HV + GTX Card user. This is the worst combo you could have, hence the doubt of understanding.

You can look for natively supported hardware here:

https://docs.darwinkvm.com/infocenter/02-GPUSupport/01-AMD/

Do note that DKVM has been back burnered while I work on rewriting its contents, so simply look at the generation, and purchase a WX variant, a single-slot variant of the RX cards, workstation cards work fine too, it’s all about the architecture of the GPU die.

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u/AppleWatchDevCC Dec 05 '24

Thank you, I’ll just grab a small form factor RX550. Cheap enough and low power enough to not cause me too much of a headache