Questions about PPD, VMs, and GPU's

[slippers_]

I have a Proxmox host running a VM specficially for folding to make use of my old GTX 750Ti.

I believe I have all things configured correctly, and used to get anywhere between 100k-140k PPD.

The problem is, I recently only seem to be achieving just shy of 80k PPD on this VM.

I've checked temps on the GPU as well as the host to make sure I'm not throttling thermally.

 

This is the spec of the host system:

CPU: i7 4790k 4c/8t 4.0Ghz

RAM: 24GB

GPU: Nvidia GeForce GTX 750Ti

Storage: Samsung 850 Evo 250GB

 

The VM currently has the following spec:

OS: Ubuntu server 22.04

CPU: 1 core (it's spiked to 100% util, but assigning 2 cores does not improve or impact the perforance at all as this ends up with ~50% util)

GPU: GeForce GTX 750Ti GPU passthrough (util sits at 99% at anywhere between 60-62 degrees Celcius with very low VRAM usage)

RAM: 1.75 GiB

Disk: 15GiB

 

The latest/near latest drivers should be installed on this system as I only set this up about 4 weeks ago.

 

Anyone have any ideas what this might be? I have thought that this could also be due to the type of job it is working on, as this number was as low as 60k on the previous task.

 

TIA

[Gorgon]

4 hours ago, slippers_ said:

I have a Proxmox host running a VM specficially for folding to make use of my old GTX 750Ti.

I believe I have all things configured correctly, and used to get anywhere between 100k-140k PPD.

The problem is, I recently only seem to be achieving just shy of 80k PPD on this VM.

I've checked temps on the GPU as well as the host to make sure I'm not throttling thermally.

 

This is the spec of the host system:

CPU: i7 4790k 4c/8t 4.0Ghz

RAM: 24GB

GPU: Nvidia GeForce GTX 750Ti

Storage: Samsung 850 Evo 250GB

 

The VM currently has the following spec:

OS: Ubuntu server 22.04

CPU: 1 core (it's spiked to 100% util, but assigning 2 cores does not improve or impact the perforance at all as this ends up with ~50% util)

GPU: GeForce GTX 750Ti GPU passthrough (util sits at 99% at anywhere between 60-62 degrees Celcius with very low VRAM usage)

RAM: 1.75 GiB

Disk: 15GiB

 

The latest/near latest drivers should be installed on this system as I only set this up about 4 weeks ago.

 

Anyone have any ideas what this might be? I have thought that this could also be due to the type of job it is working on, as this number was as low as 60k on the previous task.

 

TIA

You definitely want 2 threads for this vM as one will be dedicated to the feeding the GPU and not having one free for the OS will impact PPD as it will be needed for housekeeping in the vM OS and checkpoints for the F@H.

 

You should be getting an average of 120kPPD with the 750ti but that will vary depending on the WU.

 

The temps look fine as do the VRAM (F@H makes minimal use of it).

[slippers_]

2 hours ago, Gorgon said:

You definitely want 2 threads for this vM as one will be dedicated to the feeding the GPU and not having one free for the OS will impact PPD as it will be needed for housekeeping in the vM OS and checkpoints for the F@H.

 

You should be getting an average of 120kPPD with the 750ti but that will vary depending on the WU.

 

The temps look fine as do the VRAM (F@H makes minimal use of it).

Great, I'll assign two threads to this VM - I'll keep monitoring the PPDs. Might change what it's working on to see what yields higher results.

Thanks for the help!