PrimeGrid Challenges 2021

[Markfw]

Is that specific 3900x possibly in a different 'location' under your Primegrid preferences? If you go on the Primegrid website --> Your Account --> Select View next to 'computers on this account' it will show you a list of all computers on your account and what 'location' they are set to. If it's set to a different location it will get different settings than the other computers.

Thats it. How do I change that ???

Edit: figured it out.... Now its doing one unit at 16cpu's

 

[Icecold]

You can also use the location setting to make optimal configurations per machine type. You could use one of the other location types to specify 12 threads per task, and put your 3900x's into that location and they'll run 2 tasks at a time if you were so inclined to.

 

[Markfw]

You can also use the location setting to make optimal configurations per machine type. You could use one of the other location types to specify 12 threads per task, and put your 3900x's into that location and they'll run 2 tasks at a time if you were so inclined to.

At the moment, the 3900x's are running about 9 hours for a task. That is pretty good for a Zen2, yes ? The farm is doing OK now. We will see next stats.

 

[Skillz]

At the moment, the 3900x's are running about 9 hours for a task. That is pretty good for a Zen2, yes ? The farm is doing OK now. We will see next stats.

Not to put any pressure on you, but I think the only shot we have at winning this round is depending on what you can throw on it. I'm running everything I've got on it. We only gain 1st place for 3 - 4 hours during the event day, while the other hours AC takes first.

If TennesseeTony or Fardringle can toss a decent amount on it then it could be them that tips the stats in our favor.

Or, a long shot, but a gather up a few new members with some decent CPUs that join us in time for their CPUs to return a decent amount of high paying work units.

Lots of factors in this one.

 

[Markfw]

Not to put any pressure on you, but I think the only shot we have at winning this round is depending on what you can throw on it. I'm running everything I've got on it. We only gain 1st place for 3 - 4 hours during the event day, while the other hours AC takes first.

If TennesseeTony or Fardringle can toss a decent amount on it then it could be them that tips the stats in our favor.

Or, a long shot, but a gather up a few new members with some decent CPUs that join us in time for their CPUs to return a decent amount of high paying work units.

Lots of factors in this one.

OK, I have all but the 3 Rosetta boxes, and one 2683v3 doing Primegrid. Thats 352 cores, or 22 16 CPU units. I have 3 boxes off, but its still 90f every day, so for now, I am maxed.

I added another 3900x and a 2970wx, all of those are running about 9 hours per unit ! Pretty nice.

All of a sudden though, the 2970wx went to 24 hours on the 3 units. Odd.....

Ryzen Master shows it is maxed at 250 watt PPT (or whatever that is) and 67c temp, so its only being held back by the PPT number. Its running 3400, but bad for 24 cores/48 threads. My PPT is only at 39% for my 3900x running windows (the only one of 3 on windows) and 4 ghz and 79c, with an ETA of 9 hours 20 minutes. The 3000 series is doing way better than the 2000 series.....

The 2970wx is only slightly better than the 7401P at about 28 hours each(2.4 ghz), both 24 core.

 

[Fardringle]

Not to put any pressure on you, but I think the only shot we have at winning this round is depending on what you can throw on it. I'm running everything I've got on it. We only gain 1st place for 3 - 4 hours during the event day, while the other hours AC takes first.

If TennesseeTony or Fardringle can toss a decent amount on it then it could be them that tips the stats in our favor.

Or, a long shot, but a gather up a few new members with some decent CPUs that join us in time for their CPUs to return a decent amount of high paying work units.

Lots of factors in this one.

I wish that I did have "a decent amount" that I could toss on the project, but I really don't. The only computer I have right now that could even sort of run these huge tasks is my one 3900X, and unfortunately it's busy on something else that I don't want to interrupt...

edit: I just put a single i7-8700 on the project running 12-thread tasks. I can't run BOINC on it for very long, but a few days should be doable, and maybe until the end of the week.

I don't know how well it will actually run the tasks. So far, the estimated time is bouncing around between 24 and 36 hours, but it has only been running for a short time so I'm sure that will change over time.

 

[Markfw]

I wish that I did have "a decent amount" that I could toss on the project, but I really don't. The only computer I have right now that could even sort of run these huge tasks is my one 3900X, and unfortunately it's busy on something else that I don't want to interrupt...

My 3900x's are running about 9 1/2 hours for 16 CPU's per task. They do pretty well. Could you run that, and leave 8 cores for what you are doing ?

 

[Markfw]

Well, one of my 3900x's (the one just added) keeps locking up. Its AIO and linux, so no real tools, but I am going to blow the dust out of it, and see if that was the problem. All stock, except memory ?? 3200 or 3600 speed, stock timings. I will check that next, if it locks up again after cleaning.

Edit: DAMN there was a lot of dust in that box, the radiator and the video card mostly, not the PSU. Trying again.

 

[Skillz]

edit: I just put a single i7-8700 on the project running 12-thread tasks. I can't run BOINC on it for very long, but a few days should be doable, and maybe until the end of the week.

I don't know how well it will actually run the tasks. So far, the estimated time is bouncing around between 24 and 36 hours, but it has only been running for a short time so I'm sure that will change over time.

Thanks man! I am sure that 24 - 36 hour estimate is probably pretty close; but anything added to it can help. Especially considering these large tasks can be upwards of 40k points each.

 

[Fardringle]

Thanks man! I am sure that 24 - 36 hour estimate is probably pretty close; but anything added to it can help. Especially considering these large tasks can be upwards of 40k points each.

After about 90 minutes, the estimate is showing just over 21 hours remaining, for a total of around 22.5 hours. Not great, but it's all that I really have available so I hope it will help.

 

[Skillz]

After about 90 minutes, the estimate is showing just over 21 hours remaining, for a total of around 22.5 hours. Not great, but it's all that I really have available so I hope it will help.

That's about average time for most CPUs. Only the fastest of fast CPUs can get them done faster.

 

[Markfw]

That's about average time for most CPUs. Only the fastest of fast CPUs can get them done faster.

3900x and 3950x and 5950x (the king)

Who knows about the 5900x and the 5800x, but I am sure they are all pretty fast.

 

[Fardringle]

I have decided that if Mark can be convinced to run a math project instead of medical for a little while, I can be convinced to run the math project instead of my own personal goals for a little while as well. My 3900X is running 16 thread PSP-LLR tasks now.

It's only receiving the really short validation tasks so far, but I assume that will change and it will start getting the big ones soon.

 

[thigobr]

I just joined with an 5950X... What are the best settings for this CPU?

 

[Markfw]

I just joined with an 5950X... What are the best settings for this CPU?

set the tasks per unit at 16, it will crunch them faster than anything else, even 32 core Rome !

EditL I just looked. My 5950x is doing tasks in about 11 hours, 2 at a time. for a 32 core to be faster, it would need to do them in double the time or 22 hours. My 7452 is doing 19 hours, so I guess ALMOST as fast as a 32 core Rome.

See this post for some more information, but ask any questions HERE

Question - PrimeGrid: Help AnAndTech while testing your thermal cooling

So you've got a fancy new, high core count CPU w/ a nice AIO cooler to show off? Want to make sure that cooler is doing a proper job of actually cooling your CPU doing some of the most strenuous calculations your fancy CPU will most likely ever see? Want to help advance the sciences of...

forums.anandtech.com

 

[Icecold]

I just joined with an 5950X... What are the best settings for this CPU?

Thanks for joining! With a 5950x you will want to do 2 tasks at a time, with either 16 threads per task as Mark suggested or 8 threads per task. To set the per task thread usage go under the Primegrid Website --> Your account --> Primegrid Preferences --> edit the default location and set "Multi-threading: Max # of threads for each task (Only applies to LLR, AP27, and WW CPU tasks)" to the thread count you want. I'm running 2 tasks, 8 threads each on my 5950x and it seems to run well. The way to accomplish that is set that setting to 8, and then in BOINC Manager under Options --> Computing Preferences set 'use at most ____ of the cpu's' to 50% so it won't use the SMT threads. Please let us know if you have any questions or these instructions aren't easy to follow.

 

[thigobr]

Thanks @Markfw and @Icecold for the tips! I just set to 16 threads and the computer is running 2 tasks currently
Estimated remaining time is around 11 hours as Mark mentioned... Let's see!

 

[Markfw]

Thanks @Markfw and @Icecold for the tips! I just set to 16 threads and the computer is running 2 tasks currently
Estimated remaining time is around 11 hours as Mark mentioned... Let's see!

Actually, I have 2 5950x's. One has faster memory, and does them in 10:45 (approx) and the other in about 11:15. So depending on your config, 11 hours is probably the norm.

 

[Icecold]

Mine is completing them in 13.5 hours I'm not sure if it's the ram speed or the fact that I have a PPT limit set. Probably mostly the PPT limit since Primegrid tends to really push out a lot of heat using AVX/AVX2/AVX512 which the PPT limit keeps in check. It keeps it running cool and using not a lot of power at the expense of some performance. Maybe next time I'll set the PPT limit higher, it has a Noctua NH-D15 on it so it's not like it doesn't have good cooling.

I have a 28 core /' 56 thread Haswell Xeon that is actually completing tasks quicker than my 5950x, but it requires 2 sockets/processors to do so and I'm sure uses way more power.

 

[thigobr]

I am running 220W PPT and 3800MHz 1:1:1 RAM. Effective clocks 4100~4300MHz. With WC still getting between 81~84°C on a 28°C ambient. It really pushes the CPU

 

[Skillz]

dang, why is the ambient so hot? No AC?

 

[Icecold]

I am running 220W PPT and 3800MHz 1:1:1 RAM. Effective clocks 4100~4300MHz. With WC still getting between 81~84°C on a 28°C ambient. It really pushes the CPU

I think I have something like a 95 watt PPT(would need to double check to be sure), and 3600MHz ram, so that explains why mine is much slower

 

[StefanR5R]

My 5950x is doing tasks in about 11 hours, 2 at a time.

(That's ~4.4 tasks completed per day.)

for a 32 core to be faster, it would need to do them in double the time or 22 hours. My 7452 is doing 19 hours, so I guess ALMOST as fast as a 32 core Rome.

My 7452 run 4 tasks at once per socket, and take ~14.3 hours per task. That's ~6.7 tasks completed per day. But this is with 180 W PPT limit, and with fixed processor affinity which binds each task to two own CCXs.

The increased PPT limit from 155 to 180 W should give almost (but not entirely) proportional increase in throughput. How much the affinity setting helps is unknown to me, I haven't measured this yet. (I know that it helped substantially with ESP-LLR in June, but that's a different workload from the current PSP-LLR since ESP could be run in a single Zen 2 CCX.)

PSP tasks fit into a single Zen 3 CCX; that is, there is a lot less inter-CCX traffic on Zen 3 processors (or ideally none), which is one reason – and perhaps the major reason – why Zen 3 processors leave their predecessors in the dust in this contest.

 

[HutchinsonJC]

The way to accomplish that is set that setting to 8, and then in BOINC Manager under Options --> Computing Preferences set 'use at most ____ of the cpu's' to 50% so it won't use the SMT threads.

When I did this, in Ryzen Master my cores would shoot up in use, and then shoot down to sleep, repeatedly & iirc, my PC was at 44C and 30 to 40% CPU use in Task Manager.

I set 2 tasks and 8 threads per task on the site & left the client's "Options -> Computing Preferences" CPU % setting at 100. This put temps in the low to mid 60s depending the time of the day and ambient temps (66C @ 77F in the house) and Task Manager says 56%. I'm on track for 10hrs & 30 to 40mins with 150w PPT, 101A TDC, 148A EDC.

Edit: And out of those settings, TDC is the one capping out performance. PPT is mostly sitting at 93/95%.

 

[Skillz]

When I did this, in Ryzen Master my cores would shoot up in use, and then shoot down to sleep, repeatedly & iirc, my PC was at 44C and 30 to 40% CPU use in Task Manager.

I set 2 tasks and 8 threads per task on the site & left the client's "Options -> Computing Preferences" CPU % setting at 100. This put temps in the low to mid 60s depending the time of the day and ambient temps (66C @ 77F in the house) and Task Manager says 56%. I'm on track for 10hrs & 30 to 40mins with 150w PPT, 101A TDC, 148A EDC

There are two fields/settings, but only 1 of them show in Simple View which is the one you seen.

You need to go into Advanced View by clicking View > Advanced View or pressing ctrl + sht + a.

Once in advanced view you'll see the other setting.
Use at most ___% of the CPUs
Use at most ___% of CPU Time

The one you seen was the "of CPU time" and not the correct entry. You need to put "Of the CPUs" field to 50% to utilize 50% of the logical processors on the system.