FAH do not use 100% cpu

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use7291
Posts: 2
Joined: Mon Mar 23, 2020 12:24 pm

FAH do not use 100% cpu

Post by use7291 »

cpu usage is max 65% and I don't know why. I have a 24 core AMD 3960X CPU. I Set the resources usage to "full"
Lasky
Posts: 19
Joined: Fri Mar 06, 2020 10:43 am
Hardware configuration: AMD Threadripper 24 Cores 4100 GHZ
NVIDIA GeForce RTX 2080 Super NVIDIA TU104 3.072 Shader Einheiten 8 GB GDDR6 256 Bit aktive Watercooling DirectX 12.1 OpenGL 4.5 DLSS Upscaling G-Sync PCIe 3.0 x16 4K VR 7680 x 4320
128 GB DDR4 3200 MHZ

Re: FAH do not use 100% cpu

Post by Lasky »

could you show me a screenshot of the taskmanager please? I myself have a Ryzen 7 1700 eight-core. The standard clock is 3.00 ghz...Folding@home and Rosetta@home push it to 3.16 - 3.2 Ghz...at full load it uses 15 threads, the 16t is for the GPU. Then there is something wrong in your settings.
JimboPalmer
Posts: 2522
Joined: Mon Feb 16, 2009 4:12 am
Location: Greenwood MS USA

Re: FAH do not use 100% cpu

Post by JimboPalmer »

Welcome to Folding@Home!

You have a new wonderful CPU but F@H is about 20 years old. They assumed the most threads (they call them CPUs) we would have was 32.

So any one CPU slot can have 32 CPUs, but you can have more than one CPU slot. If you make another with 16 CPUs it should use your entire PC. (It would only be more complex if you had 256 threads)

In the taskbar to the lower right of the screen, you should see a F@H molecule icon, click it (you may need to click an Up Arrow to see it ^)

The second item in this menu is Advanced Control, click it

On this screen to the left is a Configure button, click it

Now you get a screen with a Slots tab, click it

On this white field should be a cpu item, click Add and set the new slot to CPU and to 16 CPUs, and save. (you may need to set the existing cpu slot to 32)

I hope this helps!
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David Duvall
Posts: 1
Joined: Fri Oct 07, 2016 1:21 pm

Re: FAH do not use 100% cpu

Post by David Duvall »

I have found that the "Web Control" slider option running under Windows doesn't always work. You have to open the "Advanced Control" - then select "Configure" (the top left box) - then select the "Advanced" tab - then look at the "Folding Core Priority" - you will see 2 separate options. Folding@Home seems to always default to "Lowest". Select "Slightly Higher" AND click on the "Save" Button. That will take care of the low cpu usage problem but, be prepared for a computer that is working very hard..... You might want to manually change the fan speeds in BIOS on your computer to their highest settings to keep the beast cool.
use7291
Posts: 2
Joined: Mon Mar 23, 2020 12:24 pm

Re: FAH do not use 100% cpu

Post by use7291 »

JimboPalmer thank you
I created a new 16 threads slot, I edited the existing cpu slot. basically there could be situations where only the 16T slot is working, like now (33-34% max load)
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