PrimeGrid Challenges 2023

[Ken g6]

Day 0.5 stats:

Rank___Credits____Username
2______4660308____[TA]Skillz
8______1461116____crashtech
12_____1011250____w a h
13_____918052_____xii5ku
29_____383928___10esseeTony
39_____263110_____markfw
40_____262431_____cellarnoise2
46_____221480_____biodoc
65_____143728_____Orange Kid
74_____114991_____Fardringle
89_____92958______waffleironhead
136____45980______Letin Noxe
139____44982______Skivelitis2
147____39554______johnnevermind
148____39474______Ken_g6
184____22511______Mardis
281____4510_______kiska
371____319________geecee

Rank__Credits____Team
1_____9932132____TeAm AnandTech
2_____7747343____BOINC@AUSTRALIA
3_____5230912____Antarctic Crunchers
4_____4540009____SETI.Germany

I found a prime too. They're not top-5K, but they're kind of close.

 

[Letin Noxe]

Single threaded, my Ryzen 9 5900X is completing SGS tasks in 875 seconds (Windows 10). Congrats on the Prime find! Your cpu has AVX512 , which is a big boost on these tasks.

With SMT disabled in the BIOS, my 5900x stats:

Sophie Germain (LLR)

valtin

1​

1260​

1127​

89.44​

420 / 412 / 434​

408 / 404 / 415​

405 / 401 / 411​

 

[TennesseeTony]

Dang it @Markfw !!! When are those solid rocket boosters of yours going to flame out!? DON'T YOU PASS ME!!!

 

[Markfw]

Dang it @Markfw !!! When are those solid rocket boosters of yours going to flame out!? DON'T YOU PASS ME!!!

I have not added anything, just 4 little boxes doing their best ! Looks like you are safe, as I have 9 places to get to you and only 7 hours left, and 125k to get up to you. I could turn on a 256 thread dual Milan if you want !

 

[Ken g6]

Day 0.75 stats:

Rank___Credits____Username
2______6919935____[TA]Skillz
10_____2047965____crashtech
12_____1441039____w a h
14_____1280307____xii5ku
29_____546017___10esseeTony
38_____421886_____markfw
40_____372114_____cellarnoise2
45_____322621_____biodoc
64_____200964_____Orange Kid
77_____163645_____Fardringle
89_____132832_____waffleironhead
137____69569______Letin Noxe
139____65019______Skivelitis2
144____59072______johnnevermind
150____55120______Ken_g6
218____22511______Mardis
266____9539_______kiska
406____319________geecee

Rank__Credits____Team
1_____14105136___TeAm AnandTech
2_____10627826___BOINC@AUSTRALIA
3_____6953063____Antarctic Crunchers
4_____6636269____SETI.Germany

 

[Markfw]

Well, I got 6th for the team, 33rd overall. Not bad for 4 computers.

 

[crashtech]

We took 1st, nice!

 

[Ken g6]

Preliminary final stats:

Rank___Credits____Username
2______9484981____[TA]Skillz
10_____2778982____crashtech
12_____1855741____w a h
14_____1737956____xii5ku
28_____746782___10esseeTony
33_____618700_____markfw
40_____506383_____cellarnoise2
45_____448748_____biodoc
67_____272170_____Orange Kid
75_____224434_____Fardringle
89_____181566_____waffleironhead
134____98985______Letin Noxe
141____85694______johnnevermind
152____74079______Ken_g6
155____71285______Skivelitis2
232____26342______kiska
243____22511______Mardis
373____1277_______geecee

Rank__Credits____Team
1_____19236624___TeAm AnandTech
2_____14680650___BOINC@AUSTRALIA
3_____9231809____SETI.Germany
4_____9112507____Antarctic Crunchers

Preliminary because this is one of those projects that still has to be double-checked. Nice challenge, everyone!

 

[StefanR5R]

Thanks for the high-frequency stats tracking! :-)

(Although I read up on them only just now. I wasn't even there to switch my computers to PG, and to switch them back to their usual projects after the finish — a trained monkey did it for me, so to speak.)

 

[Skillz]

I had to use my phone to switch them back. Since I've been at work all day.

BT's web app for controlling the hosts is limited on something's, but it's pretty useful for setting which projects should run and shouldn't run.

Back on Denis@Home for me.

I also found 9 11 primes during the contest. Someone posted a full list of the teams prime findings, but I'll let them post their research here.

 

[Markfw]

Outside of competition, which primegrid projects do avx-512 ? I will soon have 5 7950x systems, and they are currently idle waiting on WCG to come back, so I was thinking this would be a good use in the meantime.

 

[emoga]

Outside of competition, which primegrid projects do avx-512 ? I will soon have 5 7950x systems, and they are currently idle waiting on WCG to come back, so I was thinking this would be a good use in the meantime.

If you're looking for something to do in PrimeGrid while your waiting for WCG, you could run MEGA's.

They are relatively short on a 7950x (1750 seconds?) and they have the chance of finding a mega prime. It would also add some numbers to your badge.

Running 16 tasks on a 7950x would be ideal.

 

[Markfw]

If you're looking for something to do in PrimeGrid while your waiting for WCG, you could run MEGA's.

They are relatively short on a 7950x (1750 seconds?) and they have the chance of finding a mega prime. It would also add some numbers to your View attachment 78381 badge.

Running 16 tasks on a 7950x would be ideal.

Do megas use avx-512 ? Also, its that "Generalized Fermat Prime Search n=17 Mega (GFN-17-Mega)" ??

And by running 16 tasks, do you mean "Multi-threading: Max # of threads for each task" should be 1 or 16 ?

 

[emoga]

Every PG sub-project now uses AVX-512 if I'm not mistaken.

Proth Mega Prime Search LLR (MEGA) - use 1 thread per task and set your cpus usage to 50%.

 

[Ken g6]

LLR does use AVX-512. GFN might. Sieving doesn't.

 

[Markfw]

LLR does use AVX-512. GFN might. Sieving doesn't.

I only have 4 7950x for the moment. Number 5 is here but waiting for a NVME drive. What do you think ?

 

[Markfw]

If you're looking for something to do in PrimeGrid while your waiting for WCG, you could run MEGA's.

They are relatively short on a 7950x (1750 seconds?) and they have the chance of finding a mega prime. It would also add some numbers to your View attachment 78381 badge.

Running 16 tasks on a 7950x would be ideal.

That would be 30 moinutes. Mine are doing 38 minutes, as all of them run 142 watts, (downwatted) Normally they do 90-95% at that, but not here.

 

[Ken g6]

I only have 4 7950x for the moment. Number 5 is here but waiting for a NVME drive. What do you think ?

I think you should try PPS Mega tasks, which are equally likely to be primes of similar size, and run whichever is faster.

Edit: If your goal is points, rather than primes, maybe stick with GFN17, because they oddly produce more points.

 

[Markfw]

I think you should try PPS Mega tasks, which are equally likely to be primes of similar size, and run whichever is faster.

You mean Proth Mega Prime Search LLR (MEGA) ?

 

[Markfw]

well, no answer, so I selected both mega. Lets see what happens in the morning.

 

[emoga]

Just a reminder, we have a PrimeGrid contest in 15 hours.

Gotthold Eisenstein's Birthday Challenge
The sub-project is Prime Sierpinski Problem LLR (PSP)
[which is CPU only]

More details at the PG site

 

[Markfw]

Just a reminder, we have a PrimeGrid contest in 15 hours.

Gotthold Eisenstein's Birthday Challenge
The sub-project is Prime Sierpinski Problem LLR (PSP)
[which is CPU only]

More details at the PG site

These tasks ?

 

[emoga]

Make sure you set your cache to 0.

Remember: They only count for the contest when they're downloaded AFTER the start.

 

[Markfw]

will abort them all tomorrow at 9am pst

 

[StefanR5R]

In daylight saving time:
16:00 UTC = 12:00 EDT (noon) = 09:00 PDT (forenoon)

Here are the data allocation sizes — i.e. processor cache demand per task — at the current leading edge of each of the challenge projects (of the CPU-only application versions, not of GPU applications). I checked on a Haswell CPU with FMA3 support. [...]
PSP-LLR: 22.5 MB

Many of the current llrPSP workunits in progress are still at 22.5 MB, but the biggest have progressed to 24.0 MB now.