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1) Message boards : Number crunching : 2018 Tour de Primes (Message 115304)
Posted 7 hours ago by Profile Michael GoetzProject donor
Imagine earning five badges with one prime? One of those PPS-MEGAs is the first 2018 TdP prime for that person, so it will earn and could possibly earn as well.


Yup. Five badges with one prime, with a little bit of help from 2 or 3 smaller primes.

I can now confirm that tng* has won the 2018 TdP Mountain Stage! Congratulations! This polka dot jersey is now officially yours:

While there's one more prime still in the Mountain Stage pipeline, tng* is also the prime finder of that last prime, so it's not going to change the results.
2) Message boards : Generalized Fermat Prime Search : GFN Prime Discoveries (Message 115302)
Posted 9 hours ago by Profile Michael GoetzProject donor
We've found four n=16 (65536) primes!


On 19 Feb 2018 3:16:53, the 493,749 digit prime 34197950^65536+1 was found by Scott Brown using the OCL2 (combined) app.

The double checker of this task was Azmodes on 19 Feb 2018 3:25:06 using the OCL2 (combined) app.


On 19 Feb 2018 13:45:37, the 493,856 digit prime 34327650^65536+1 was found by mattozan using the OCL2 (combined) app.

Double checker information TBA.


On 19 Feb 2018 18:49:09, the 493,915 digit prime 34397974^65536+1 was found by tng* using the OCL2 (combined) app.

Double checker information TBA.


On 20 Feb 2018 3:18:29, the 494,002 digit prime 34503816^65536+1 was found by Wingless Wonder using the OCL2 (combined) app.

Double checker information TBA.


Congratulations!
3) Message boards : Number crunching : 2018 Tour de Primes (Message 115287)
Posted 20 hours ago by Profile Michael GoetzProject donor
Sorry this is all really confusing. What would be the proper config for a 36 core 72 thread machine?


I don't think configuration is the problem here.

Do you want the text or the files? I have a 72 slots going right now...


Make sure BOINC Manager is in "Advanced mode".

In the BOINC Manager, select one of the CPU Genefer tasks. Click on the Properties button. In the properties dialog box that opens up, about four lines from the bottom, you will see something like "Directory slots/4". That tells you which slot the task is running in. In that directory, find the file stderr.txt. You're looking for text in there that says something like "delaying for 10 minutes" or "MaxErr exceeded 0.4678 > 0.4500". If you find anything like that, Genefer is having a problem.

Look in all the slots where the CPU version of Genefer is running.
4) Message boards : Aggie The Pew message board (Message 115283)
Posted 20 hours ago by Profile Michael GoetzProject donor
Michael, with the Mountain Stage now over, are there any primes to be announced for this part of TdP?


You see that red line of text that says essentially "If you can see this, we ain't done yet!"? That's the answer to your question.

I'm not going to spoil the suspense and share any details until it's all done.
5) Message boards : Number crunching : 2018 Tour de Primes (Message 115282)
Posted 20 hours ago by Profile Michael GoetzProject donor
I'm running a mix of PPSE (LLR) 8.00, Genefer 16 2.16 (cpuGFN16)...


Hm, don't think so. Task manager is clear of other processes using CPU. When I say restart, I mean just restarting the BOINC app, not my entire PC. So nothing CPU-wise has changed. Before CPU load 29%, restart BOINC app CPU load now at 100%...?


Okay, it may be that the Genefer tasks are going into error recovery mode. We don't see that very often on the CPU version, but it's possible if the CPU is overclocked, or overheating, or if there's some kind of problem.

When Genefer detects an error, rather than giving up, it tries to save the calculation by stopping calculations for 10 minutes, then restarting from the last checkpoint. It will do this for up to an hour before giving up completely.

The 10 minute delay allows for the CPU or GPU to cool down, and allows outside disruptive events (RDP, video driver crashes, etc.) time to resolve themselves and let the calculation continue.

If this is in fact what is happening, you would see reduced CPU usage because that task is inactive.

Can you look in the stderr.txt file(s) from the slot directories where the CPU Genefer tasks are running and post them here? If this is what's happening, you'll see messages in there referring to delaying 10 minutes.

I haven't been heavily involved in Genefer development for several years. I'm actually not sure if the CPU app does this or not. I know the GPU app does because I wrote its error recovery code, but I don't recall if the CPU app also uses it. It can't hurt to look in stderr.txt and see if this is the culprit.

6) Message boards : Number crunching : 2018 Tour de Primes (Message 115275)
Posted 22 hours ago by Profile Michael GoetzProject donor
I'm running a mix of PPSE (LLR) 8.00, Genefer 16 2.16 (cpuGFN16) and SOB. My CPU usage is only at 29%. The other day I swore it was the same and I quit BOINC, restarted then usage went up to 100%. Now it's back down to 29-30% usage. Any idea what is going on? I have all my prefs to use 100% CPU's

UPDATE: So I quit BOINC, restarted and now everything is back to 100% CPU usage. Has to be some sort of bug.


Something else in your computer is using the missing CPU time.
7) Message boards : Number crunching : 2018 Tour de Primes (Message 115264)
Posted 1 day ago by Profile Michael GoetzProject donor
Imagine earning five badges with one prime? One of those PPS-MEGAs is the first 2018 TdP prime for that person, so it will earn and could possibly earn as well.


And the second one was my first mega prime, that just happened to fall today ! So I got . Polk-a-dot is still open, given the small difference in numbr of primes.

Daniel


Congratulations on your first mega prime!
8) Message boards : Number crunching : 2018 Mega Primes (Message 115256)
Posted 1 day ago by Profile Michael GoetzProject donor
11 is a new record for mega primes in one month (let alone 19 days), eclipsing last year's record of 10 mega primes in February.
9) Message boards : Generalized Fermat Prime Search : GFN Prime Discoveries (Message 115247)
Posted 1 day ago by Profile Michael GoetzProject donor
We've found an n=17-Mega (131072) prime and an n=17-Low (131072) prime!


On 18 Feb 2018 10:51:52, the 1,008,430 digit prime 49397682^131072+1 was found by Reggie using the OCL2 (combined) app.

The double checker of this task was kittyjia on 19 Feb 2018 11:34:52 using the OCL2 (combined) app.


On 18 Feb 2018 13:47:39, the 926,824 digit prime 11778792^131072+1 was found by Brucifer using the OCL2 (combined) app.

The double checker of this task was Bart on 18 Feb 2018 14:34:55 using the OCL2 (combined) app.


Congratulations!
10) Message boards : Number crunching : New feature question? (Message 115243)
Posted 1 day ago by Profile Michael GoetzProject donor
I don't mind new suggestions. Sometimes you'll give me incentive to do something I already was already considering. Sometimes it will be something truly new and inspirational.

And sometimes it won't. There's not always going to be an explanation.


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