PrimeGrid
Please visit donation page to help the project cover running costs for this month
1) Message boards : Number crunching : DYFL tasks are ... significantly increasing in number ... (Message 144819)
Posted 34 days ago by Profile j.sheridanProject donor
The number of tasks in progress steadily increased over the last year from 200 to more than 600. Last week alone it jumped from 500 to 600 within a day. Maybe some users with high-end GPUs of new RTX generation?

Task stats


I bought a new laptop and installed latest BOINC 7.16.11. Found out that version ignores 0 task cache setting. Since my laptop has RTX 2060, 145 GFN Extreme tasks downloaded before I noticed. I'm not manually aborting 145 tasks. Probably 6 GFN tasks will finish before the rest timeout Nov. 15th.

I fellback to BOINC 7.14.2, same as all my other computers. Everything OK now.


You can also go into Your Account on the top of the column to the left and then Edit Prime Grid Preferences and set this line:
Max # of simultaneous PrimeGrid tasks
(Sets the maximum # of PrimeGrid tasks, including GPU tasks)
(Recommended setting is "No limit")

to zero, that means you will only get one task at a time but it does apply to every kind of task you get in that venue. So if you are crunching both cpu and gpu tasks from PrimeGrid on that pc this won't work.

The setting does works correctly - I'm using 7.16.11 on both PCs, plus I suspect we'd hear lots of complaints if it didn't work. There's something else amiss with GDB's settings.


There's nothing wrong with my settings. It's like I said, there's something wrong with BOINC 7.16.11 that ignores my BOINC client computing preferences. Using BOINC 7.14.2 everything is OK. I don't mess with my account settings except to select task type. I use app_config to configure number of CPUs and tasks for each type of task.

or there's something wrong with your app_config... I bet it works without that.
2) Message boards : Number crunching : DYFL tasks are ... significantly increasing in number ... (Message 144807)
Posted 34 days ago by Profile j.sheridanProject donor
The number of tasks in progress steadily increased over the last year from 200 to more than 600. Last week alone it jumped from 500 to 600 within a day. Maybe some users with high-end GPUs of new RTX generation?

Task stats


I bought a new laptop and installed latest BOINC 7.16.11. Found out that version ignores 0 task cache setting. Since my laptop has RTX 2060, 145 GFN Extreme tasks downloaded before I noticed. I'm not manually aborting 145 tasks. Probably 6 GFN tasks will finish before the rest timeout Nov. 15th.

I fellback to BOINC 7.14.2, same as all my other computers. Everything OK now.


You can also go into Your Account on the top of the column to the left and then Edit Prime Grid Preferences and set this line:
Max # of simultaneous PrimeGrid tasks
(Sets the maximum # of PrimeGrid tasks, including GPU tasks)
(Recommended setting is "No limit")

to zero, that means you will only get one task at a time but it does apply to every kind of task you get in that venue. So if you are crunching both cpu and gpu tasks from PrimeGrid on that pc this won't work.

The setting does works correctly - I'm using 7.16.11 on both PCs, plus I suspect we'd hear lots of complaints if it didn't work. There's something else amiss with GDB's settings.
3) Message boards : Problems and Help : Assign tasks to specific cores automatically (Message 144747)
Posted 37 days ago by Profile j.sheridanProject donor
If you have HT on then you need to be using 50% cpu. If your new cpu is a ryzen then 1 thread per pps-div task is faster than 4 for total throughput.
4) Message boards : Aggie The Pew message board (Message 144688)
Posted 39 days ago by Profile j.sheridanProject donor
Will we make it to third ?
Hope so.
The gap to CNT seems to be shrinking.

With any luck they're holding back a large batch again and the uploads will get switched off when they dump them.
5) Message boards : Aggie The Pew message board (Message 144623)
Posted 40 days ago by Profile j.sheridanProject donor
yes, here's a screenshot of the default settings

"Auto" does not necessarily mean "on". I'd look to verify what power it is actually limiting at to determine if you are actually running PBO or not. That's looking for consumption above 88W on 65W TDP CPUs, and I think 142W on 105W TDP CPUs.

Not sure why you're arguing the point. I found out about the setting from someone else posting with problem temperatures and he was told how to fix it - switch pbo to "disabled" as "auto"=enabled.
When I did that the temps on my 3700x dropped by 10-15C and obviously that wouldn't have happened unless it was enabled before.
6) Message boards : Aggie The Pew message board (Message 144620)
Posted 40 days ago by Profile j.sheridanProject donor

Are you 100% sure PBO was on, not just PB? Depending on the CPU, it is an easy check to see what power draw is reported under a heavy load like prime finding. 65W TDP CPUs run at 88W PPT limit as stock. I find it hard to believe PBO enabled is default as that is an overclock. The only maybe is sometimes it might get tied in with enabling XMP but I haven't seen that on AMD side, only Intel side.


yes, here's a screenshot of the default settings


7) Message boards : Aggie The Pew message board (Message 144589)
Posted 41 days ago by Profile j.sheridanProject donor
PBO is by default off as it is an overclock. Apart from some early testing, I never turn it on. It is not a factor in my case.

The PSU is a highly rated 850W unit so is unlikely to be a problem.

I've had 3 ryzen boards, from 3 different manufacturers - b450, x470, x570 and all have had PBO=on as the default - I mentioned somewhere on here before that I thought I'd made a major mistake buying the b450 for my fanless HTPC as it was running stupidly hot until I discovered that setting.


You really shouldn't be seeing errors from the standard boost as that should be well within tolerances.
These things can be hard to track down.
I'd give memtest a run, or put in some alternate memory if you have it, just to rule out a memory problem. I'm probably preaching to the choir be make sure you have enough airflow over the board as well.
8) Message boards : Aggie The Pew message board (Message 144575)
Posted 41 days ago by Profile j.sheridanProject donor
As I mentioned on the other thread, the main thing is to make sure PBO is off. Your cpu will thank you just for that.
The other usual suspect when you start getting errors is the psu. Are you using something decent?
9) Message boards : Aggie The Pew message board (Message 144573)
Posted 41 days ago by Profile j.sheridanProject donor
like this?

10) Message boards : Number crunching : Évariste Galois's Birthday Challenge (Message 144572)
Posted 41 days ago by Profile j.sheridanProject donor
in particular AMD Zen2 CPUs (Ryzen 3xxx) out of the box tend to be a bit too aggressive with Boost frequencies and voltages. Several have us have simply turned off Boost in the BIOS, or at least dialed it back a little bit.

Maybe I missed the discussion, is there is a summary of how this conclusion was reached?


My system with the warnings is a recent rebuild. It is a launch day 3700X, in a B450 ITX mobo so not the best combination there. I do have a Noctua D15 so air cooling doesn't get much better, and haven't yet touched ram speeds so it is still only at 2400.

I did try lowering the power limit, which amusingly is done by going into the "overclocking" section of bios. I've had bad experiences with Ryzen Master so I wont be installing that. I did note Spread Spectrum was on so I turned that off. This is a small frequency variation in an attempt to lower peak interference generation, but at times it is in effect a slight overclock balanced out by a slight underclock at other times. Anyway, first reboot afterwards: I get a BSOD on starting BOINC. Not good... I've restored the power limit to stock, so only setting change is Spread Spectrum disabled, and will see if that helps in itself.

It's PBO that you want to turn off so it reverts to the standard boost method - PBO just results in loads of extra heat (over 10C on mine) and very little extra boost.
Despite doing this I've still had a warning on each of my ryzens and that's probably because I'm undervolting and perhaps I've gone a step too far but I'm going to be leaving them as-is unless I notice any sign of an uptick in warnings.


Next 10 posts
[Return to PrimeGrid main page]
DNS Powered by DNSEXIT.COM
Copyright © 2005 - 2020 Rytis Slatkevičius (contact) and PrimeGrid community. Server load 0.00, 0.02, 0.04
Generated 2 Dec 2020 | 20:11:09 UTC