Posts by -= Vyper =-

1) Message boards : News : SETI@home hibernation (Message 2035173)
Posted 2 Mar 2020 by Profile -= Vyper =-
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😬😧😞
2) Message boards : Number crunching : Setting up Linux to crunch CUDA90 and above for Windows users (Message 2031855)
Posted 10 Feb 2020 by Profile -= Vyper =-
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No need to fingerpoint etc.

So monitor attached seems like one common attribute.
TBar is this behaviour consistent with different drivers?!
Linux flavors?!
Im running Debian 10.

Do you have a checklist so we can pinpoint this behaviour?
Perhaps running Gnome vs Kde or anything?!
I dont have all variables needed and in the Linux world there are alot.
Kernels etc etc.
The list is huge. :-/
3) Message boards : Number crunching : Setting up Linux to crunch CUDA90 and above for Windows users (Message 2031791)
Posted 10 Feb 2020 by Profile -= Vyper =-
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According to Tbar, yes it fits. Do a system reboot and see what happens.


Ok, i just rebooted it. Lets see what happens. I didn't shutdown boinc or anything.
systemctl reboot was the command!

EDIT: I didn't notice anything weird, only one WU from yesterday?! Do i miss anything? /EDIT[/u]
4) Message boards : Number crunching : Setting up Linux to crunch CUDA90 and above for Windows users (Message 2031762)
Posted 10 Feb 2020 by Profile -= Vyper =-
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Does this host https://setiathome.berkeley.edu/results.php?hostid=8570185 fit in the criteria of the problem?
I do not have any monitors attached to it and can only access it through SSH.

Does a simple reboot in the console make the problem appear? If so i can test this too.
5) Message boards : Number crunching : Xeon Phi 7120P is it usable for S@H ? (Message 2029465)
Posted 26 Jan 2020 by Profile -= Vyper =-
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For what it seems there seems to be a UEFI bios, but not fully compliant. Could work though.
Quadro P2000 seems to be a Cuda 6.1 so it would work better in Linux. Run TBars all_in_one package aswell and your system should fly!
6) Message boards : Number crunching : Xeon Phi 7120P is it usable for S@H ? (Message 2029398)
Posted 26 Jan 2020 by Profile -= Vyper =-
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Exactly, most bang 4 buck = Nvidia 1660TI or Super. Uefi Motherboard is required because all those new GPUs require UEFI support in bios to get detected properly.
7) Message boards : Number crunching : Xeon Phi 7120P is it usable for S@H ? (Message 2029223)
Posted 25 Jan 2020 by Profile -= Vyper =-
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It's obsolete these days.
https://ark.intel.com/content/www/us/en/ark/products/75799/intel-xeon-phi-coprocessor-7120p-16gb-1-238-ghz-61-core.html
Only 16G ram, 61 cores @ 1.2Ghz!

I think a 3700X is faster than that Phi board. 16 * 3800Mhz is around 60000 Mhz roughly the same and then you've got FPU enhancements and it's pipeline.
8) Message boards : Number crunching : Ryzen and Threadripper (Message 2020402)
Posted 24 Nov 2019 by Profile -= Vyper =-
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Always run the latest Tom, dont go the 2-3% faster route bla bla. Latest agesa versions is modified so its harder to fry your cpu etc.
9) Message boards : Number crunching : Ryzen and Threadripper (Message 2017578)
Posted 2 Nov 2019 by Profile -= Vyper =-
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Correct, its a beta and very sensitive for its functions. And has limitations aswell. Due to that it isnt available todate for masses.
10) Message boards : Number crunching : Really dinky or old cpu models driving "huge" gpus.... (Message 2017549)
Posted 2 Nov 2019 by Profile -= Vyper =-
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I think this computer fits that category.

A dual core pentium cpu driving 1080ti and a 970.

Its cpu starved and im doing alot of magic in cron to increase thread priority to setiathome executable.

If i would exchange that motherboard, cpu etc to a new one the RAC wouldnt increase that much after all.

https://setiathome.berkeley.edu/show_host_detail.php?hostid=8676036
11) Message boards : Number crunching : Ryzen and Threadripper (Message 2017548)
Posted 2 Nov 2019 by Profile -= Vyper =-
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Its not that you reduce energy but your cpu can produce more for the same amount of energy.

But if you only use the cpu to feed the gpus you're soo much better of using the mutex version instead sucking up almost the same cpu wattage and the performance difference would be almost none. Mutex version had helped me alot because i have slower cpu to feed the gpus.

In my case running solely s@h on the gpu and as only project its a clear win for me to run mutex and use the cpus as slaves only with almost the same amount of powerusage.
12) Message boards : Number crunching : Ryzen and Threadripper (Message 2017541)
Posted 2 Nov 2019 by Profile -= Vyper =-
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Cpu crunching is never good efficiencywise for your wallet. The only cpu that comes near is the new Threadripper with 64 cores. But the price is another thing. As usual its almost always better to have a latest gen Nvidia bang/buck wise.

Otherwise its always better to have a cpu enough to feed powerrestrained gpus for efficiency.
13) Message boards : Number crunching : Welcome to the 20 Year Club! (Message 2017006)
Posted 28 Oct 2019 by Profile -= Vyper =-
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Hey i managed to miss my 20th anniversary date. Congratz to me 🙂
14) Message boards : Number crunching : GPU FLOPS: Theory vs Reality (Message 2016553)
Posted 25 Oct 2019 by Profile -= Vyper =-
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How is the speed on z3iv compared to those releases these days?

Have anyone tried it?
15) Message boards : Number crunching : GPU FLOPS: Theory vs Reality (Message 2016508)
Posted 24 Oct 2019 by Profile -= Vyper =-
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If it's a first gen Titan card that you have (Kepler) then the Executable won't even work in Linux either.
Maxwell gen works! Kepler is earlier than Maxwell..
16) Message boards : Number crunching : Ryzen and Threadripper (Message 2016132)
Posted 21 Oct 2019 by Profile -= Vyper =-
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Do you feel that there is an advantage with the X470 chipset over the B450 with respect to crunching?

No not really. As long as the VRM design of the B450 motherboard is adequate, it makes no difference to cpu crunching for the chipset type.

The BIOS' of the B450 boards will not be as full featured for cpu control as the X470 boards though.


Here is a list of motherboards and their capabilities for running Ryzen 3Gen, the page is in Swedish so you might need translate.google.com to make it understandable.

https://www.sweclockers.com/forum/post/17951749
17) Message boards : Number crunching : Ryzen and Threadripper (Message 2015894)
Posted 18 Oct 2019 by Profile -= Vyper =-
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Question for @Vyper, which of the cpu temp sensor readouts do you use? The motherboard SIO CPU Temp or the cpu internal Tdie temp? The motherboard CPU temp is only polled every couple of seconds and is an average over time. It only reports whole integers and the accuracy is limited by the LSB conversion of the ADC.

The Tdie temp is the millisecond polled, random, internal sampling of each cpu core and has accuracy to the half degree. That is the one I use. So depending on which cpu core gets sampled, the reported Tdie temp can be 68° C. if the core that is looked at has just become unloaded or it can report 83° C. if the core that is currently polled is under heavy AVX loading from a cpu task. So I see quite a bit of variance in the Tdie reported temp depending on which core is being looked at.


I was testing with prime in Torture mode.. Small FFTs maximum heat. The software reports the Tdie and it's around 69 degrees Celsius, got a sporadic peak to 78 degrees Celsius and i could hear the fans rev and then it was back to 68-69 degrees C again with low noise.
18) Message boards : Number crunching : Ryzen and Threadripper (Message 2015720)
Posted 17 Oct 2019 by Profile -= Vyper =-
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Running without SMT certainly explains it. But at the cost of about 50% or more potential performance.


Yea, around 40% in multithreaded applications, but with higher performance in some single threaded applications instead.
19) Message boards : Number crunching : Ryzen and Threadripper (Message 2015716)
Posted 17 Oct 2019 by Profile -= Vyper =-
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My ambient is about 20 - 22 degrees Celsius. A 2080Ti in the same system.
And i'm running it in 12Core mode (Not 12 core + fake to get 12 more cores)

My system (12 cores): https://setiathome.berkeley.edu/show_host_detail.php?hostid=8600449
Keiths system (24 cores): https://setiathome.berkeley.edu/show_host_detail.php?hostid=5741129
20) Message boards : Number crunching : Ryzen and Threadripper (Message 2015704)
Posted 17 Oct 2019 by Profile -= Vyper =-
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I'm doing about the same.

Auto, drop vcore offset to -0.05 and a Noctua fan U14S, but i've disabled SMT.
I do not need the extra 12 cores. I just want as full speed on the single threading as possible as it is powerful enough.

My cpu @ 24 cores = 70xx Cinebench and the cpu @ 12 cores = 50xx Cinebench.

The cpu is almost always below 70 degrees Celsius (Except with prime95) and turbos up to 4.5 - 4.6 region on one core as intended. Running the ABBA bios.
Cannot really hear the fan as it's dead silent and i've adjusted fancurves in the bios that it doesn't throttle until 70 degrees Celsius.. Its so silent even at 100% usage.


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