preferred nVidia drivers ?

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Re: preferred nVidia drivers ?

Postby sean_oz » Mon Feb 26, 2018 2:03 pm

foldy wrote:@rw202 4GB RAM per slot is too much. It uses maybe 1GB and can only spikes up during initialization. I would say 4 GB is enough for 4 GPUs.

true, but that's whats in the box, it was a machine way back.

I was getting excited back in the day when I could fold 40k a day, now scoring over 100k a day.
i need to stop dreaming a bout water-cooled 1080's and the like, kids need braces and the boss is chasing a new kitchen, guess this will have to do,...... for now. :biggrin:

Sean
sean_0z @ ExOC [urlhttp://folding.extremeoverclocking.com/user_summary.php?s=&u=122514][/url]
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Re: preferred nVidia drivers ?

Postby rwh202 » Mon Feb 26, 2018 11:16 pm

foldy wrote:@rw202 4GB RAM per slot is too much. It uses maybe 1GB and can only spikes up during initialization. I would say 4 GB is enough for 4 GPUs.

I don't think it's too much - it certainly won't do any harm. I can't find the posts from 2015 (I think) when it was being discussed, but I believe it was a project owner who came out to say 2GB was insufficient for their core 21 GPU WUs.
I've experienced problems with 2 slots + OS on 4 GB, but 8 GB appears to be plenty. Given that the box for the GPU states 8GB min, 16 GB recommended, that doesn't seem unreasonable.
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Re: preferred nVidia drivers ?

Postby HayesK » Tue Feb 27, 2018 1:47 am

From my notes during May 2016, "Was able to run 2x13200 on host with 4GB system ram, 2xGTX970, linux client v7.44, nvidia driver 361.42, i7-860CPU at stock. No errors, but system was very sluggish. Was using over 4GB of 5GB swap file."

My recollection is that there were a number of failed 13200 on my systems with the default 4GB swap file created by Ubuntu on systems with 4GB system ram. Gradually upgraded all my hosts to 4GB per GPU and created 15GB swap files when rebuilding the OS.
folding for OCF T32
<= 10-GPU ( 8-GTX980Ti, 2-RTX2070Super ) as HayesK =>
<= 24-GPU ( 3-650TiBoost, 1-660Ti, 3-750Ti, 1-960m, 4-970, 2-1060, 2-1070, 6-1080Ti, 2-1660Ti, 2-2070Super )
as HayesK_ALL_18SjyNbF8VdXaNAFCVfG4rAHUyvtdmoFvX =>
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Re: preferred nVidia drivers ?

Postby bruce » Tue Feb 27, 2018 6:54 pm

The upper limit on the size of the swap file is a meaningless number designed to save [u]disk[/u space. If you open a number of apps but they're sitting idle, most of their memory allocation will be migrated to the swap file where they no longer interfere with active apps, including FAH. The impact is only felt if FAH's active memory is forced out.

This is a Windows system that is used for other things than FAH. I remove the upper limit on the swap file since I have plenty of free disk space. The Task Manager has a column with the title PF Delta which monitors page file activity by application. When I see large numbers associated with FahCore_xx that are persistent, I know that I need more RAM. (Looking at the column Working set is also useful since the number of atoms in the assigned projects also matters.)

Currently I'm running two copies of Core_21 and two copies of Core_a7 and FireFox. That's putting too much stress on my 6GB. Closing some unnecessary tabs in FireFox helps lot but it's time for another stick of RAM or one less 0xa7 -- or both. BTW, Core_21 does increase/decrease its working set some. That's normal.
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Re: preferred nVidia drivers ?

Postby foldy » Tue Feb 27, 2018 10:24 pm

PC stress level also depends on if you have a SSD or HDD drive. HDD is slow in random access so needs part of RAM for caching. SSD is faster in random access so does not need RAM for caching (although is speeds things up even more). If all RAM is used for programs and none left for HDD drive caching things can get really slow.
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Re: preferred nVidia drivers ?

Postby sean_oz » Tue Feb 27, 2018 11:31 pm

foldy wrote:@rw202 4GB RAM per slot is too much. It uses maybe 1GB and can only spikes up during initialization. I would say 4 GB is enough for 4 GPUs.


Yes it may well be so, but that's whats in the box.
Sam & I have talked about Linux folding, now have a roughed out plan to fold on two similar older machines, comparing windows and Linux side by side.

Growing up my Dad and I made go-carts and fixed push bikes, how things have changed.

Sean
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