FAH Low GPU utilization

[lexidobe]

Hello everyone, I am having a bit of a problem with FAH only using around 50% of my GPU's. I am folding on my Core i7-6850K, two GTX 970's and an AMD 290 and I am sometimes not getting as many points as I should because even with folding power on full, the program is sometimes only utilizing up to around 50% of my 970's, not sure about my 290 because Afterburner doesn't feel like reporting its usage. I am wondering if my CPU may be holding me back because if I turn off CPU folding while it is doing this, my GPU utilization will go up to around 65-70% and my PPD actually increases because the GPUs are being used more effectively. I have noticed that sometimes the program uses around 100% of my GPU(s) as it should, but sometimes it won't. Right now it won't use all of either card. It doesn't seem to matter if I use Windows 7 or 10, it will sometimes does this on either OS.

 

Do you have any idea what the problem could be? Is this just a bug in the program that I can't do anything about or is there some way I can fix this? Thanks in advance, I appreciate any input or suggestions! 

[Jurrunio]

50% average between two cards or 50% on both cards? Not aware of WUs that can use multiple GPUs.

[lexidobe]

5 hours ago, Jurrunio said:

50% average between two cards or 50% on both cards? Not aware of WUs that can use multiple GPUs.

It may be around 50% on either or both cards at any time. Right after I posted this the program started using both 970's fully and I was getting around 1.5-1.7 million PPD, but it's only using the 970's about 50% at the moment and I'm only getting around 1 millon PPD. I believe it is using the 290 fully though because it's scoring about 440K PPD and the 970's are around 275-300K PPD. So weird

[LazyDev]

8 hours ago, lexidobe said:

It may be around 50% on either or both cards at any time. Right after I posted this the program started using both 970's fully and I was getting around 1.5-1.7 million PPD, but it's only using the 970's about 50% at the moment and I'm only getting around 1 millon PPD. I believe it is using the 290 fully though because it's scoring about 440K PPD and the 970's are around 275-300K PPD. So weird

What is the observed PCIe bandwidth use? You can view this using either GPU-z or CPUID's HWMonitor. Look for "Bus Interface".

 

 

Secondly, do you fold using the CPU aswell?

[lexidobe]

8 hours ago, LazyDev said:

What is the observed PCIe bandwidth use? You can view this using either GPU-z or CPUID's HWMonitor. Look for "Bus Interface".

 

 

Secondly, do you fold using the CPU aswell?

Right now the 290 and one of the 970's is running at full power, one 970 is not. Both 970's are at around 12-14% bus interface load, not sure about the 290 because it doesn't feel like reporting it. And yes I am folding on my CPU also 

[LazyDev]

3 hours ago, lexidobe said:

Right now the 290 and one of the 970's is running at full power, one 970 is not. Both 970's are at around 12-14% bus interface load, not sure about the 290 because it doesn't feel like reporting it. And yes I am folding on my CPU also 

Some work units don't fully utilize the GPU, due to other variables, such as calculations done on the CPU. For example, my 3080 is only at 89% GPU load and isn't even running at 300 watts of power. This sort of behavior could be normal, as performance per work unit is always changing. You have a good work unit, such as Covid-19 or Myosins, or a low performing unit, such as Cancer. 

 

As long as the GPU's are running, there isn't much concern.

 

 

[lexidobe]

20 hours ago, LazyDev said:

Some work units don't fully utilize the GPU, due to other variables, such as calculations done on the CPU. For example, my 3080 is only at 89% GPU load and isn't even running at 300 watts of power. This sort of behavior could be normal, as performance per work unit is always changing. You have a good work unit, such as Covid-19 or Myosins, or a low performing unit, such as Cancer. 

 

As long as the GPU's are running, there isn't much concern.

 

 

Thank you. I guess there's no point in worrying about it since it doesn't seem like there's anything I can do about it anyways, I think that's something the FAH team will need to resolve.