Poor Performance - Dual GPU - Linux

[Difinity]

Good day,

I am getting what I believe to be poor performance out of my setup. Hopefully someone can help me diagnose what's not configured correctly.

Note: This is a dedicated folding machine with nothing else running on it.

OS: UBUNTU 18.04

System:
Ryzen 2700x (using 4 threads)
32gigs RAM
2 x 1080ti FTW3 Hybrid
850w PSU (pulling ~615 from wall)

Steps:

• Installed the OS.
  Ran all updates for OS.
  Updated the NVidia drivers to 435.
  Installed FAH client and FAH control.
  Configured slot 0 (CPU) to only use 4 threads.
  Added slots for the GPUs (1 & 2).
  Pushed power to max.
  Started folding.

It's been running for a couple of days, but I'm only getting about 400K PPD. According to several sources I've seen, I should be getting about 2.4 million PPD. What am I missing?

Thanks in advance!

[HaloJones]

we will need to see some logs to help. What ppd does the FAHControl show?

[foldy]

Did you add a passkey yet to get the bonus points?
https://foldingathome.org/support/faq/points/passkey/

[Difinity]

Did you add a passkey yet to get the bonus points?
https://foldingathome.org/support/faq/points/passkey/

Thank you foldy. That seems to have been it. My PPD immediately shot up and just passed 2.8M. I didn't imagine adding a passkey would make such a dramatic difference! I didn't see anything in the installation/setup guides that indicated this little tid-bit. Might be a good addition to the guide.

Thanks again.

[kiore]

Did you add a passkey yet to get the bonus points?
https://foldingathome.org/support/faq/points/passkey/

Thank you foldy. That seems to have been it. My PPD immediately shot up and just passed 2.8M. I didn't imagine adding a passkey would make such a dramatic difference! I didn't see anything in the installation/setup guides that indicated this little tid-bit. Might be a good addition to the guide.

Thanks again.

Note that as you need to complete 10 work units before the quick return bonus is qualified your PPD might not jump as quickly as as the projection on the client. Now you have a passkey and as long as you maintain 80%+ success rate your will get these bonuses.

[JimboPalmer]

I didn't imagine adding a passkey would make such a dramatic difference!

The Quick Return Bonus favors powerful cards over weak cards. My GTX 1060 is only about twice as powerful as my GTX 1050 ti, but it gets about 3 times the Points Per Day. You have quite powerful cards, so will notice QRB more than someone with a GT 710.

[bruce]

Yes, those Donors who have a GT710 or a GT640 (which I have) get relatively few points but it's still a contribution to science.

[Difinity]

Hey guys. Just wanted to drop a note here for some unexpected behavior.

I transferred the CPU, SSD, RAM and both GPUs from the ASUS B450-F to an ASRock X570 Phantom Gaming 4, and my score jumped from 2.8M to almost 3.7M Not sure why.

I also took it from an EVGA 850G3 to an EVGA 1300 G2. It was pulling about 615W, now it's pulling 730W.

[Shirty]

Core 22?

[JimboPalmer]

I believe the ASRock X570 Phantom Gaming 4 may support PCI-E 4.0 with two slots at x16 If dual one is x16 and one is x4.

AMD Ryzen series CPUs (Matisse)
- 2 x PCI Express 4.0 x16 Slots (PCIE1/PCIE3: single at x16 (PCIE1); dual at x16 (PCIE1) / x4 (PCIE3))*
AMD Ryzen series CPUs (Pinnacle Ridge)
- 2 x PCI Express 3.0 x16 Slots (PCIE1/PCIE3: single at x16 (PCIE1); dual at x16 (PCIE1) / x4 (PCIE3))*
AMD Ryzen series CPUs (Picasso)
- 2 x PCI Express 3.0 x16 Slots (PCIE1/PCIE3: single at x8 (PCIE1); dual at x8 (PCIE1) / x4 (PCIE3))*

The ASUS B450-F has 2 x PCIe 3.0/2.0 x16 slots but if you use both, one is x8 and one is x4. So the bandwidth of the first slot is much greater in the new motherboard.

https://dlcdnets.asus.com/pub/ASUS/mb/S ... UM_WEB.pdf page 22

Near as i can read, you do not tell us which CPU family you are using. Matisse, Pinnacle Ridge, or Picasso.

[Nathan_P]

I don't think there is that much of a boost going from gen 3 to gen 4, the jump between gen 2 and gen 3 was only 1-2% in my testing. This looks more like core 22, there is more science being done and more points awarded.

[MeeLee]

There aren't any GPUs currently on the market that will support the benefits of PCIE 4.0.
All GPUs currently use a 3.0 interface or earlier, and are limited by such.
The benefits of PCIE 4.0 might be in mining, one could easily run a PCIE 4.0 version of an RTX2080Ti on a PCIE x1 slot, meaning an 8core CPU can easily feed 8 GPUs at near to full speed in the near future (as opposed to 3GPUs currently).

[JimboPalmer]

I saw the jump from x8 to x16 as the more important jump than from PCI-E 3.0 to 4.0

When we get PCI-E 4.0 video cards, that will be yet another jump for newer AMD motherboards.

[BlazingDragon]

I saw the jump from x8 to x16 as the more important jump than from PCI-E 3.0 to 4.0

When we get PCI-E 4.0 video cards, that will be yet another jump for newer AMD motherboards.

The Radeon 5x00 series GPUs/cards already support PCIE Gen 4.
Here's an investigation: https://www.techpowerup.com/review/pci- ... x-5700-xt/

While it doesn't make a difference for a computer with a single card in a 16x slot, it will help for motherboards with multiple bandwidth hungry cards [GPUs or otherwise] as a PICE Gen4 slot at 8x has the same bandwidth as a PCIE Gen3 slot at x16.