PrimeGrid Challenges 2022

[Ken g6]

Day 2 stats:

Rank___Credits____Username
1______11265988___[TA]Skillz
5______4834553____parsnip soup in a clay bowl
7______4174197____xii5ku
8______3552537____crashtech
18_____1486439____markfw
21_____1351274____w a h
22_____1327294____biodoc
41_____804417_____mmonnin
45_____678498_____Orange Kid
57_____510718_____cellarnoise2
81_____308114_____waffleironhead
100____239461_____Ken_g6
138____134362_____Lane42
145____128136_____mnelsonx
203____56600______kiska
206____55714___10esseeTony

Rank__Credits____Team
1_____30908309___TeAm AnandTech
2_____16100090___Antarctic Crunchers
3_____13586989___Czech National Team
4_____11903706___SETI.Germany

Looks like a lot of us fell in the individual ranks. w a h happened.

 

[StefanR5R]

Somebody seems to have topped up his clay bowl with some of xii5ku's super secret optimization sauce. :-/

Maybe I'll bring some old gear out of semi-retirement after all.

 

[Orange Kid]

Thanks for the #'s. Seems my meager CPU power is rather limited this time around.

 

[cellarnoise]

Thanks for the #'s. Seems my meager CPU power is rather limited this time around.

I'll try not to take that personally, but it is starting to cool off here, so I may just try to fire up some old junk and see if I can close this orange gap some

It would help out a great deal if I would set a reminder to start on time...

A personal goal is top 50, and currently that would mean me eating a "Dingo" Where does everyone think of their silly user names anyway?

 

[lane42]

Where does everyone think of their silly user names anyway?

Well, i worked in a bowling center, for 43 years, as a mechanic, and was fixing
Lane42 and it just popped into my head to use it

 

[Ken g6]

Day 3 stats:

Rank___Credits____Username
1______24477782___[TA]Skillz
6______7502653____parsnip soup in a clay bowl
7______7258651____xii5ku
8______5707626____crashtech
18_____2435415____markfw
23_____2076558____w a h
25_____2005974____biodoc
37_____1369582____mmonnin
49_____1035178____Orange Kid
53_____936306_____cellarnoise2
82_____487324_____waffleironhead
105____353820_____Ken_g6
125____268174_____Lane42
157____184214_____mnelsonx
172____151262_____kiska
191____111294___10esseeTony

Rank__Credits____Team
1_____56352209___TeAm AnandTech
2_____26247388___Antarctic Crunchers
3_____22731985___Czech National Team
4_____18612384___SETI.Germany

Where does everyone think of their silly user names anyway?

Check out my primes on The Prime Pages.

 

[Orange Kid]

Thanks for the update.

Where does everyone think of their silly user names anyway?

Was a redhead one upon a time, now I guess it should be q-tip.

 

[Ken g6]

Day 4 late stats:

Rank___Credits____Username
1______37736320___[TA]Skillz
6______11021729___parsnip soup in a clay bowl
7______11007349___xii5ku
8______8175564____crashtech
14_____4223805____markfw
24_____2886020____w a h
26_____2776956____biodoc
36_____1959732____mmonnin
48_____1458584____cellarnoise2
50_____1442851____Orange Kid
82_____689616_____waffleironhead
108____493507_____Ken_g6
130____376162_____Lane42
160____259302_____mnelsonx
169____239953_____kiska
191____177786_____Fardringle
202____159129___10esseeTony

Rank__Credits____Team
1_____85084375___TeAm AnandTech
2_____38217676___Antarctic Crunchers
3_____34475884___Czech National Team
4_____26124826___SETI.Germany

Sorry the stats are late. I had to recover from getting shot.

Twice.

With vaccines, of course.

 

[Markfw]

Thanks for the stats. My new 7950x's are just kicking booty. 1 hour 15 minutes for an 8c task ?. They do vary based on the FFT length from 1:15 to 1:40, but the 5950x's can't even come close to those numbers. They run 2:50 to 3:30, also win 10, also with process lasso. And the 7950x's do not have the good fast memory yet !

Notice, when we started I had no 7950x's, and was on 21st place. With one 7950x I went to 18th place, and now with 2 of them, at 14th place and maybe higher.

A few other comparisons, my 12700F with no ecores is running about 2:50, with avx-512, about the same as the 5950x (you can compare them, as both are 8c task times). The 2970wx threadripper is at 8 hours for an 8C task, and I only have 2 of them running like all the rest, due to the 2 x 8 config in PG. The 3950 is running about 4:15. I have no EPYC running this.

AS you can see, nothing, not even alderlake WITH avx-512 can touch Zen 4 !!

 

[Orange Kid]

Thanks for the stats. I am all in and dropping like a rock.

 

[StefanR5R]

Off-topic to the current challenge — looking far ahead into the December challenge at GFN-21, GFN-22, and GFN-DYFL:

GFN-DYFL

• is designed to look for the world's largest prime, period. Good luck with that! ;-)
• runs on GPUs only.
• uses unsigned INT32 generally ("OCL5" transform), or INT64 sometimes ("OCL3" transform). FP64 hardware is neither required nor of any advantage for that.
• gives 75 % long job credit bonus.

GFN-22

• was once targeting what GFN-DYFL is there for now. If a GFN-22 prime was found right now, it would be the 3rd largest prime known to man.
• runs on GPUs only.
• uses FP64 ("OCL" transform) on GPUs which have decent FP64 hardware (many but not all server GPUs, and a few older consumer and semi-pro GPUs). On all other GPUs, it typically uses 2*signed INT32 ("OCL4" transform).
• gives 50 % long job credit bonus.

GFN-21

• A prime found by this project would be the 7th largest prime, currently.
• runs on GPUs and CPUs, but with a catch.
• on GPUs, typically uses 2*signed INT32 ("OCL4" transform). The FP64 based "OCL" transform, which once was the fastest transform on GPUs with respective hardware, no longer works here.
• on CPUs, transforms called fma, avx, sse4, sse2, fmai, avxi, sse4i, sse2i are suported. In a test with a random workunit from November 2022 on a Xeon E5 v4, it selected "fmai"; the AVX2 detection of the Xeon kicked in and clocked the processor down by the AVX2 clock offset.*
• Recent average CPU time of cpuGFN21 is ≈31 days. Ouch!
• cpuGFN21 can be configured for multithreading via web preferences* or via app_config.xml, but still.
• gives 20 % long job credit bonus.

Neither GFN-DYFL, nor GFN-22, nor GFN-21 have ever found a prime, yet.

Sources:
– top post of GFN Status by n-Range (17-22) (last updated on August 12, 2020)
– Subproject status: Genefer statistics (current)
– pschoefer on GPU transforms in genefer
– Yves Gallot on limits of the FP64 OCL and CPU transforms in April 2022
– "Edit PrimeGrid preferences" web page

Spoiler: example syntax for cpuGFN21 app_config.xml *

<app_config>
    <app_version>
        <app_name>genefer</app_name>
        <plan_class>cpuGFN21_mt</plan_class>
        <cmdline>--nthreads 22</cmdline>
        <avg_ncpus>22</avg_ncpus>
    </app_version>
</app_config>

________
*) edited

 

[Ken g6]

Day 5 after-church stats:

Rank___Credits____Username
1______50540110___[TA]Skillz
6______14480492___xii5ku
7______13886364___parsnip soup in a clay bowl
8______10611013___crashtech
14_____5897528____markfw
26_____3642384____w a h
27_____3494365____biodoc
36_____2577069____mmonnin
47_____2038868____cellarnoise2
51_____1852240____Orange Kid
87_____842303_____waffleironhead
109____616073_____Ken_g6
136____449195_____Lane42
142____419913_____Fardringle
166____336564_____kiska
173____305859_____mnelsonx
200____210075___10esseeTony

Rank__Credits____Team
1_____112200424___TeAm AnandTech
2_____49889696___Antarctic Crunchers
3_____44683525___Czech National Team
4_____33494232___SETI.Germany

 

[StefanR5R]

For nostalgia, here are the results of the previous TRP-LLR challenge, which was in July 2020:
http://www.portvapes.co.uk/?id=Latest-exam-1Z0-876-Dumps&exid=threads/primegrid-challenges-2020.2575468/post-40240519
https://statsgr.id/challenge.php?challenge_id=2020_5

 

[Ken g6]

Day 6 stats:

Rank___Credits____Username
1______59222311___[TA]Skillz
6______17401015___xii5ku
7______16465881___parsnip soup in a clay bowl
8______12589844___crashtech
14_____7248337____markfw
26_____4273177____w a h
27_____4078166____biodoc
37_____3013124____mmonnin
45_____2483073____cellarnoise2
51_____2185690____Orange Kid
88_____1036335____waffleironhead
109____726481_____Ken_g6
120____625906_____Fardringle
154____449195_____Lane42
167____396885_____kiska
175____356091_____mnelsonx
202____250496___10esseeTony

Rank__Credits____Team
1_____132802016___TeAm AnandTech
2_____60267842___Antarctic Crunchers
3_____52736618___Czech National Team
4_____39394050___SETI.Germany

 

[Markfw]

I am down a 7950x, I have 14th, but I doubt I can hold it. I had to return the memory, and new memory does not come until tomorrow.

 

[TennesseeTony]

Ah poo. Too little too late to pass Ken.

Congrats, Markfw, for holding 14th. Congrats to all! You guys smashed that number one team ranking.

Thanks for the stats, Ken!

 

[Ken g6]

More-or-less final stats:

Rank___Credits____Username
1______62219889___[TA]Skillz
6______20500025___xii5ku
7______19017832___parsnip soup in a clay bowl
8______14564303___crashtech
14_____8516584____markfw
26_____4926115____w a h
27_____4726509____biodoc
36_____3556627____mmonnin
45_____2924211____cellarnoise2
52_____2521844____Orange Kid
85_____1203977____waffleironhead
111____824305_____Fardringle
112____821893_____Ken_g6
116____806185___10esseeTony
166____472407_____kiska
171____449195_____Lane42
180____407432_____mnelsonx

Rank__Credits____Team
1_____148459344___TeAm AnandTech
2_____70894023___Antarctic Crunchers
3_____61603511___Czech National Team
4_____46700483___SETI.Germany

Ah poo. Too little too late to pass Ken.

Somebody passed me. It just wasn't you.

 

[StefanR5R]

Thanks for the stats, @Ken g6!

I wish I could have stored all that heat for Winter.

 

[Orange Kid]

Thanks for the stats.
#52 Was hoping to stay in the top 50.

 

[Fardringle]

Somebody passed me. It just wasn't you.

 

[cellarnoise]

My fastest time for a GTX1080 is around 11 min.
And in my other computer, the 1070ti is at around 7 min. ?

My life is not all that interesting.

So I am coming for anyone with more "points" above or in front of me. Does not matter much, but it is something

Just hoping to push the team a bit

And I am coming for you all

 

[Markfw]

Any special config for this upcoming event ? (Nov 1st). Other than selecting CUL and WOO.

 

[VirtualLarry]

I SO want to buy a high-end (AMD, most likely) GPU for DC work, and if I ever game again, for my 5900X rig with 64GB.

$669 for a 6900XT, $529 for a 6800XT. Navi 30-series comes out Nov. 3rd.

Any comments / suggestions? Which GPUs are PrimeGrid monsters? (Have a efficient 6500XT in there now.)

 

[crashtech]

Everyone seems to run Nvidia for DC, PrimeGrid is no exception. I didn't really like going over to the dark side, but now I only have a few AMD cards left, all of them running Milkyway. I think if I was more of a diehard AMD guy I would probably try to get more Radeon VII's. Any Vega 20 GPU is a pretty good all-rounder at DC but they are all extremely expensive. The newer AMD stuff is pretty good at gaming but not really at DC. I'm not sure why this is, the theoretical performance is there but it doesn't translate into real-world DC performance.

 

[Markfw]

so apparently my config is set got 8c or 8 threads per task. Is this still good ? for the CUL and WOO tasks ?