Windows virtualization with GPU passthrough

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Mrt12

Well-Known Member
May 19, 2019
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Good day,
so I would like to run a Windows guest on Proxmox. Basically, this is nothing new and I have done it successfully already many times. However this one seems a bit more special to me. I currently have a single PC that has fast RAM, and a GPU, for finite element simulations. The PC is a complete mess and a nightmare to work on, and also not so easy to backup, and I now have to reinstall it and would use the opportunity to install it as a guest on Proxmox.
Different questions arise.

a) I would pass through the entire graphics card to the guest: NVIDIA Corporation TU104GL [Quadro RTX 4000] (rev a1). I read that there were several problems with GPU passthrough, but is this also the case if I fully pass through the entire device?
b) I would probably use the "host" CPU, to have the best performance. Is it at all a good idea to have the FEM calculation software on a virtual machine, or should I not even try? my main reason is that it would be so much easier if I have to back it up, or later migrate to different hardware (provided I will have the same or equivalent GPU).

Or should I not even waste my time with this and let everything run natively on that PC?

thanks a lot for any hints.
 
I am not familiar with the “finite element simulations” software, but basically your plan should work. Depending on the mainboard, it may not work right away, so I recommend testing it thoroughly beforehand. Here are some important links to the documentation:

https://pve.proxmox.com/wiki/PCI(e)_Passthrough
G

Thread 'Nvidia Error 43 with Quadro RTX4000'

Hi all,
I am new to this forum but already read alot about the common error43. BUT I got into a situation that I cannot resolve also not with the awnsers of all already creaded threads...

But first things first:
Code: 
1. System:
Dell R7910
CPU: 2x E5-2690v4
RAM: 128GB DDR4 ECC
GPU: Nvidia Quadro RTX4000 (Slot 4)
Storage: 2x250gb SSD Raid1 ZFS, 6x 500gb ZRaid2 ZFS
OS: PVE 7.4-3

2. KVM config:
bios: ovmf
boot: order=scsi0;net0
cores: 8
cpu: host
efidisk0: data:vm-101-disk-0,efitype=4m,pre-enrolled-keys=1,size=1M
hostpci0: 0000:82:00,pcie=1,romfile=QuadroRTX4000.rom
machine: pc-q35-7.2...

And maybe for a new gpu ;)
https://pve.proxmox.com/wiki/NVIDIA_vGPU_on_Proxmox_VE
 
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