PrimeGrid Races 2018

[StefanR5R]

Somebody from CNT reported one result at the 19:30 UTC update.
My first one still has a few minutes to go.

Edit,

321-LLR: Year of the Dog Challenge (2018-03-16 18:00:00 to 2018-03-23 18:00:00)
Last update: 2018-03-16 19:45:01
Rank    Name       Team                      Score
   1    xii5ku     TeAm AnandTech         19518.09
   2    pschoefer  SETI.Germany            9759.64
   3    LookAS     Czech National Team     4881.65

Also, I discovered that SETI.Germany have charts and graphs:
https://www.seti-germany.de/pg_challenge/stats/teams/201802

Edit 2,
here is CNT's graph (includes only 5 teams near their own rank):
https://stats.czechnationalteam.cz/index.php?akce=turnaje

 

[Howdy]

I will have a 6700k on ebay soon. motherboard/cpu and maybe ram. PM me if interested.

At this point in time my CPU power has to suck due to I have to direct funds to home improvement and a taller, more area fence for my dogs. For now I will just complain about it

 

[Ken g6]

I keep running into frustrations with my i7 6700 non-K CPU. When I first got it, the CPU fan wasn't adequate, so it would go up above 80C and throttle if I didn't keep the clock speed down.

Well, I finally got a cheap but proper tower HSF installed. It generally keeps the CPU below 70C. But I still get throttling even if I turn turbo off! There seems to be a TDP limit of 65W that I'm hitting. And it doesn't look like I can turn that off in the BIOS. So I'm stuck at 3.3GHz for PrimeGrid.

 

[ao_ika_red]

Good morning everyone. Can't sleep long enough due to high room temp in recent days. We're having vernal equinox here, so even at night room temp is still above 30°C.

However, this challenge is 168 hours long. If you miss the first 6 or 7 hours, you are still in for more than 95 % of it.

Edit,
you are located at UTC+07:00, right? Which puts the beginning of the challenge at Saturday 01:00 AM of your local time. Then you need to set a networking schedule of

Friday 00:00 - 01:23 (for example) and
Saturday 01:01 - 24:00

Correct, Stefan. Odd thing is, even though I set it for Friday at 01:02 - 05:00, it kept downloading task at 21:50. I've done it manually anyway. Thanks for your help.

I keep running into frustrations with my i7 6700 non-K CPU. When I first got it, the CPU fan wasn't adequate, so it would go up above 80C and throttle if I didn't keep the clock speed down.

Well, I finally got a cheap but proper tower HSF installed. It generally keeps the CPU below 70C. But I still get throttling even if I turn turbo off! There seems to be a TDP limit of 65W that I'm hitting. And it doesn't look like I can turn that off in the BIOS. So I'm stuck at 3.3GHz for PrimeGrid.

Have same issue with you Ken. Even my CPU temp on speedfan and HWinfo only shows below 45°C, core clock is bouncing between 3.0 - 3.5 GHz.

 

[Ken g6]

Have same issue with you Ken. Even my CPU temp on speedfan and HWinfo only shows below 45°C, core clock is bouncing between 3.0 - 3.5 GHz.

I wouldn't mind that too much. The problem is when my CPU throttles it goes straight to 800MHz.

 

[ao_ika_red]

I wouldn't mind that too much. The problem is when my CPU throttles it goes straight to 800MHz.

Wait, what? That's straight into idle clock.
We know that since SKL, Intel decided to use paste TIM so it would be harder to cool down but I never know if it's that hard. What kind of hsf are you using right now?

 

[Ken g6]

Wait, what? That's straight into idle clock.
We know that since SKL, Intel decided to use paste TIM so it would be harder to cool down but I never know if it's that hard. What kind of hsf are you using right now?

http://www.coolermaster.com/cooling/cpu-air-cooler/hyper-tx2/
http://us.coolermaster.com/product/Detail/cooling/hyper-series/hyper-t2.html

It's not the cooler. The CPU rarely gets over 70C now. It has to be the locked thermal power limit of 65W.

 

[ao_ika_red]

http://www.coolermaster.com/cooling/cpu-air-cooler/hyper-tx2/
http://us.coolermaster.com/product/Detail/cooling/hyper-series/hyper-t2.html

It's not the cooler. The CPU rarely gets over 70C now. It has to be the locked thermal power limit of 65W.

That's a unique-looking cooler.
Well, K cpu is there for a reason, right?

 

[TennesseeTony]

.....it would go up above 80C and throttle.....[70C with better cooler]...There seems to be a TDP limit of 65W that I'm hitting.....

70C with an upgraded mini-tower cooler, and only 65watts TDP? Best put a power meter on that thing...I know it's not a K model, but it may be pulling as much on AVX tasks as the motherboard can feed it. I found out my 5820K's MB can supply 300w to the CPU the first time I ran AVX tasks. It still does it, even though I have since set the motherboard to run the chip at 100% stock settings.

 

[Ken g6]

Best put a power meter on that thing...I know it's not a K model, but it may be pulling as much on AVX tasks as the motherboard can feed it.

Well, it's a Z board, which should do 95W minimum. But either way at 3.3GHz and 65C it's not throttling, so I'm not going to worry about it too much. I don't know what I could do if that was the issue anyway.

 

[TennesseeTony]

Whoa! A certain somebody is in 2nd place! (and brought the TeAm along with him to 5th place!) What manner of sorcery is this?! Congrats!!

 

[Markfw]

WOW, maybe I should pull the ad for my 6700k/motherboard/ram.....

 

[Ken g6]

Best put a power meter on that thing...I know it's not a K model, but it may be pulling as much on AVX tasks as the motherboard can feed it.

I think I found a way, based on /sys/class/powercap/*/energy_uj It's showing an average of 62W if nothing else is using the CPU.

Whoa! A certain somebody is in 2nd place! (and brought the TeAm along with him to 5th place!) What manner of sorcery is this?! Congrats!!

To be clear, these are the stats Tony's seeing:

Rank___Credits____Username
2______361155_____xii5ku

44_____19562______crashtech
53_____19532______Ken_g6
67_____14659______Howdy2u2
99_____9754_______zzuupp

Rank__Credits____Team
2_____894005_____Aggie The Pew
3_____791673_____SETI.Germany
4_____713077_____Sicituradastra.
5_____424665_____TeAm AnandTech
6_____351891_____Crunching@EVGA
7_____214970_____BOINC@Poland
8_____107437_____BOINC@MIXI

 

[TennesseeTony]

@Markfw I'm reffering to Stefan, not Ken's 6700 i7 we've been discussing.

**********************************************

Ok, I want to run 30 threads, divided into 5 running tasks, with 6 threads each, my app config should be......?

<app_config>
      <app>
            <name>llr321</name>
            <max_concurrent>5</max_concurrent>
      </app>
      <app_version>
            <app_name>llr321</app_name>
            <cmdline>-t 6</cmdline>
            <avg_ncpus>6</avg_ncpus>
   </app_version>
</app_config>

EDIT: Yes, just forgot to move my CPU usage back up from 1% is why it wasn't working for me.

 

[Howdy]

Whoa! A certain somebody is in 2nd place! (and brought the TeAm along with him to 5th place!) What manner of sorcery is this?! Congrats!!

I'm off to see the wizard the wonderful wizard of xii5ku !!!!

 

[zzuupp]

I think I found a way, based on /sys/class/powercap/*/energy_uj It's showing an average of 62W if nothing else is using the CPU.

To be clear, these are the stats Tony's seeing:

Rank___Credits____Username
2______361155_____xii5ku

44_____19562______crashtech
53_____19532______Ken_g6
67_____14659______Howdy2u2
99_____9754_______zzuupp

Rank__Credits____Team
2_____894005_____Aggie The Pew
3_____791673_____SETI.Germany
4_____713077_____Sicituradastra.
5_____424665_____TeAm AnandTech
6_____351891_____Crunching@EVGA
7_____214970_____BOINC@Poland
8_____107437_____BOINC@MIXI

Sweet! I did actually start mostly on time

 

[StefanR5R]

Whoa! A certain somebody is in 2nd place!

Not for long anymore though, probably. The top two users from team ATP run hosts which are a lot slower than mine, but have an order of magnitude more hosts than I have. I.e. they have longer intervals between their results uploads.

Also, there will certainly be two or three users again who employ a bunch of cloud computers, and run LLR in single-threaded mode on them — either because these users still haven't noticed that multithreading improves throughput, or because they employ gratis trial cloud VMs with just one logical CPU per VM. It will be a while until these users will be seen shooting up through the ranks.

And third, there is going to be the Formula Boinc sprint, project to be announced on Wednesday.

Best put a power meter on that thing...

I think I found a way, based on /sys/class/powercap/*/energy_uj It's showing an average of 62W if nothing else is using the CPU.

Interesting; I wasn't aware of this driver yet. I never built the driver on my Gentoo boxes, but of course the OpenSUSE and Mint ones have it by default. "grep -r . /sys/class/powercap/intel-rapl/" shows a bunch of info (here, a lot more on a Kaby Lake than on a Broadwell), and "ls -lR /sys/class/powercap/intel-rapl/" reveals that some of the attributes are writable...

 

[TennesseeTony]

10 hours seem right for 6 threads? I was expecting 3.5 hours..... stock ThreadRipper w/DDR4-3000.

 

[Ken g6]

10 hours seem right for 6 threads? I was expecting 3.5 hours..... stock ThreadRipper w/DDR4-3000.

3.5 hours would be about right if you had AVX.

Maybe you should throw Moar Coars at each WU?

 

[Ken g6]

Day 1 stats:

Rank___Credits____Username
3______1172473____xii5ku
25_____195647_____crashtech
53_____87989______Howdy2u2
85_____58653______Ken_g6
129____24483___10esseeTony
165____14657______Orange Kid
184____9754_______zzuupp
198____4887_______MarcelliusIkaP

Rank__Credits____Team
2_____3454633____Czech National Team
3_____3066758____SETI.Germany
4_____2420442____Sicituradastra.
5_____1568547____TeAm AnandTech
6_____1198491____Crunching@EVGA
7_____748370_____BOINC@Poland
8_____493591_____BOINC@MIXI

It's now taking more than just @StefanR5R to beat EVGA. And if @Howdy2u2 needs more CPU power then so do I. Hmmm...

 

[StefanR5R]

Ok, I want to run 30 threads, divided into 5 running tasks,

10 hours seem right for 6 threads? I was expecting 3.5 hours..... stock ThreadRipper w/DDR4-3000.

Since ThreadRipper consists of two dies, each one with two 4-core complexes (CCX), it's probably better to run 4 (or maybe only 2?) LLR workers at a time, not 5. Though the question then is whether the OS takes notice at all and keeps the threads of each process on the same die, or better yet on the same CCX.

Also, if you have another substantial workload on the processor, like a GPU application, more shuffling of processes between cores will go on.

That said, I have tried odd numbers of multithreaded PrimeGrid workers on a dual-socket 2011-3 host before (on Linux), and the fact that one of the workers had to go across sockets did not impact the overall troughput of the host to a substantial degree, compared with configs with similar but even numbers of jobs.

 

[StefanR5R]

With just one task at a time on a Ryzen 1700X, my spying eyes see reports of 12,700 s = 3.5 hours run time.

So, ThreadRipper should have a bit less then 3.5 h run time if only two tasks are run at a time. I.e. 1.75 h mean time between task completions, compared to your current 10 h / 5 = 2 h.

(The post which I link to is discussing an estimated 9 % speed improvement by replacing PrimeGrid's LLR v3.8.20 by the current v3.8.21 from http://jpenne.free.fr/. This replacement requires an app_info.xml.)

 

[bbhaag]

This thread kind of caught my interest so I went ahead and dl'd BOINC and chose Primegrid from the drop down. At primegrid.com I searched for Anandtech and then joined what I believe to be the right team. How do I know though?

EDIT:I should add that I am a complete noob to this so a lot of this thread went over my head.

 

[Kiska]

Though the question then is whether the OS takes notice at all and keeps the threads of each process on the same die, or better yet on the same CCX.

I've seen on my dual Xeon system, if I assign say 15 threads to llr, Windows tends to keep it on 1 NUMA node aka using all cores of the first Xeon but not the second. So there is some intelligence in the scheduling. Whether that scheduler benefits Ryzen is to be seen

 

[Ken g6]

This thread kind of caught my interest so I went ahead and dl'd BOINC and chose Primegrid from the drop down. At primegrid.com I searched for Anandtech and then joined what I believe to be the right team. How do I know though?

EDIT:I should add that I am a complete noob to this so a lot of this thread went over my head.

Welcome to TeAm AnandTech, bbhaag! I see you here, so you're on the right team.

I also see you've done some PrimeGrid work. However, that's not the kind of work that counts in this particular "challenge". To change that, go here, and click on "Edit PrimeGrid preferences" near the bottom. Then check the checkbox next to "321 Prime Search LLR (321)", uncheck the one next to "Generalized Cullen/Woodall Sieve (GCW-Sieve)", and save the changes at the bottom of the page.

If you do this you should watch your CPU temperatures. LLR is very similar to Prime95, so it runs your system about as hard as anything useful can. If you've overclocked that 6700k you may need to lower your overclock.

Good luck, and I hope you have fun.