PrimeGrid Challenges 2022

[Icecold]

This one is really close, everybody needs to keep the pedal to the metal or we may not beat Hypothetically Fused AC and SETI Germany -

1​	TeAm AnandTech	108,463,806.94​	13 883​
2​	Antarctic Crunchers & SETI.Germany hypothetically fused	106,308,012.28​	13605​

 

[Ken g6]

Day 3.25 stats:

Rank___Credits____Username
1______31814932___[TA]Skillz
4______23773354___Icecold
5______22674770___crashtech
9______12527632___Pokey
21_____6151462____xii5ku
22_____5929116____emoga
23_____5898472____mmonnin
38_____3477944____Orange Kid
40_____3023151____cellarnoise2
73_____1599883____Endgame124
93_____1211012____Fardringle
112____906743_____kiska
117____889604_____Skivelitis2
139____655601_____waffleironhead
161____531377_____Lane42
193____328188_____Ken_g6

Rank__Credits____Team
1_____122259695___TeAm AnandTech
2_____61889895___Antarctic Crunchers
3_____56766186___SETI.Germany
4_____56328849___Czech National Team

Skillz are proving the most effective in the race for the top. But who will come out of the icy crash best?

 

[Icecold]

Hypothetically fused stats update-

Hypothetically fused AC and SETI Germany are still struggling to catch up and seem like they could use the addition of a third team.

1​	TeAm AnandTech	122 ,744 ,746.96​	15 ,708​
2​	Hypothetically fused Antarctic Crunchers, SETI.Germany and The Scottish Boinc Team	122,170,174.59​	15,633​

 

[StefanR5R]

It's getting more and more hypothetical here. @Icecold, yes, you can earn a Conjecture Bonus at PrimeGrid, but it works a bit differently.

 

[Ken g6]

Day 4 stats:

Rank___Credits____Username
1______42449803___[TA]Skillz
4______28122335___crashtech
6______24470157___Icecold
9______15331333___Pokey
17_____9071178____xii5ku
24_____7307729____mmonnin
27_____6422381____emoga
38_____4456837____Orange Kid
42_____3821204____cellarnoise2
84_____1755964____Endgame124
93_____1508560____Fardringle
113____1172998____kiska
135____889604_____Skivelitis2
160____702529_____waffleironhead
171____601854_____Lane42
189____437792_____Ken_g6

Rank__Credits____Team
1_____149388712___TeAm AnandTech
2_____83775911___Antarctic Crunchers
3_____70427144___Czech National Team
4_____70175221___SETI.Germany

Get a rope! Somebody crashed through the ice!

 

[Ken g6]

More-or-less final stats:

Rank___Credits____Username
1______53411946___[TA]Skillz
4______36919662___crashtech
6______30683946___Icecold
11_____18967103___Pokey
18_____12048670___xii5ku
24_____8937406____mmonnin
30_____6422381____emoga
36_____5788870____Orange Kid
42_____4846887____cellarnoise2
71_____2528820____Endgame124
93_____1916035____Fardringle
112____1556874____kiska
138____1093013____waffleironhead
140____1085209____biodoc
161____889604_____Skivelitis2
181____648860_____Lane42
184____617995_____Ken_g6
365____23509______catavalon21

Rank__Credits____Team
1_____188168036___TeAm AnandTech
2_____113736235___Antarctic Crunchers
3_____93792552___SETI.Germany
4_____90971261___Czech National Team

I think we were beaten only by hypothetical fusion.

Somehow I didn't come in last, but it was through no fault of my own. Thanks, @catavalon21! (Or someone going by that name.)

 

[Orange Kid]

Thanks for the updates and stats.
I was going to do some updating, but with new CPUs and GPUs maybe not tooooooo far off I will wait and see. 🙃
.

 

[cellarnoise]

Thanks for the updates and stats.
I was going to do some updating, but with new CPUs and GPUs maybe not tooooooo far off I will wait and see. 🙃
.

I was trying to catch you "Oranger Kid", but then you seemed to be spreading Orange joy and I forgot what my goal was?............................. I also found that orange can be a good cleaner of overtake thoughts.

 

[Ken g6]

Bump for the next challenge in about 2 1/2 days.

 

[StefanR5R]

I checked all of the 89 active ks, each with its min and max n in progress according to llrSR5 subproject stats on a Haswell CPU.

For the 59 ks with candidates of k*5^n−1 form, the LLR application chose FMA3 FFT lengths of 720K, 800K, 864K, 896K, 960K (and several "zero padded FMA3 FFT length 960K", FWIW). Most of these ks had an FMA3 FFT length of 960K for both min and max n in progress. The FFT data size in this case is 7.5 MBytes.

For the 30 ks with candidates of k*5^n+1 form, the LLR application chose "all complex FMA3" FFT lengths of 768K, 800K, 864K, 960K, of which the latter two occurred most often (6.75…7.5 MBytes FFT data size).

 

[Markfw]

Bump for the next challenge in about 2 1/2 days.

So when does this start ? Time in PST ?
I have 13 boxes and somewhere over 700 threads waiting, but it will take time to change everything over.

 

[Ken g6]

So when does this start ? Time in PST ?

This one's an early start for most of us. 8am Pacific, 5am Eastern.

 

[Markfw]

Glad I asked. I need to go to the gym early. How long does this last ?

 

[biodoc]

This one's an early start for most of us. 8am Pacific, 5am Eastern.

Isn't 13:00 UTC, 9:00 AM Eastern?

 

[Markfw]

Isn't 13:00 UTC, 9:00 AM Eastern?

Yes, and 6 am PDT. I just used the converter

 

[Bradtech519]

I'll flip my rig over around 8:30 AM CST tomorrow morning. Good luck all

 

[Markfw]

@Ken g6 Can you post here tomorrow when its good to start ?

 

[lane42]

Mark, just use the clock, PrimeGrid

 

[Markfw]

Mark, just use the clock, PrimeGrid

Thanks, thats working, 6 am. Its tough as a deaf person, no alarm clock, you have to wake up every few hours and look at the clock.

 

[lane42]

Amazon.com: Shock Clock 2 - Wearable Silent Vibrating/Zapping Alarm Clock for Heavy Sleepers, Hard of Hearing and Couples. Disable with Jumping Jacks/QR Code Scan : Clothing, Shoes & Jewelry

 

[Markfw]

Amazon.com: Shock Clock 2 - Wearable Silent Vibrating/Zapping Alarm Clock for Heavy Sleepers, Hard of Hearing and Couples. Disable with Jumping Jacks/QR Code Scan : Clothing, Shoes & Jewelry

Thanks for the idea, but being 68 years old, and having heart problems, that looks risky for me.

 

[Ken g6]

Time to start. I overslept! (By a few minutes.)

 

[Ken g6]

Somebody on the TeAm found a large prime before the start of the Challenge. Who, Wah, that masked man?

 

[Bradtech519]

Looking at 2 and 3 days to complete current tasks. Hopefully that is the norm for everyone and I don't got something odd going on. I tried some optimizations for the 12700kf. On a side note I dreamed about a secret weapon. Building a Cyrix rig to run!

 

[StefanR5R]

Looking at 2 and 3 days to complete current tasks. Hopefully that is the norm for everyone

This can't be the norm.

The "Edit PrimeGrid preferences" web page shows for SR5:

Recent average CPU time: 17:38:12​

Let's say a reasonably modern CPU but with Hyperthreading enabled and with multithreading overhead needed not 17.6 CPU hours, but, let's say, 35 CPU hours. 7-threaded tasks should then complete after 5 hours.

Note, there are three types of tasks:

• "Verification tasks". These tasks are similar to "wingmen tasks" of other projects, except that they use a clever algorithm which makes these tasks very light weight. They complete after a few minutes.
• Regular tasks in the very rare case that an actual prime is found. These take up to four times as long as regular tasks which don't find a prime, according to the "Edit PrimeGrid preferences" page.
• Regular tasks. Here is an example: result ID 1357472901
  6-threaded task on Core i7-9700 (8c/8t Coffee Lake desktop CPU, i.e. no Hyperthreading, 3 GHz base clock), took 48,759 seconds CPU time and 8,935 seconds = 2.5 h run time according to the result page on the project server (which is not always reliable in these matters¹). The WU was 5,490 credits worth. Note that this computer runs PPS Sieve on the GPU in parallel, which takes a bit of performance away and may be the reason why the user did not give all 8 cores to the LLR application. That is, this computer probably runs 1 LLR task and 1 Sieve task at a time.

________
¹) I am not in the race myself yet, hence can only look at others' computers on the web for task runtimes.