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streamVolunteer moderator
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This is an official 30-days warning about Primorial and Factorial PRPNET projects. These projects are on their way to Boinc and will be removed from PRPNET soon.
It's guaranteed that work for these projects will be available at least for 30 days. After that, no new work will be loaded and project ports will be shut down when any of following happens:
- The project will be converted to Boinc;
- All currently loaded candidates will be processed.
It's not recommended to run these projects now until you really want PSA credit. All PRPNET work is non trusted and must be double-checked on Boinc anyway. Since Boinc software will use Fast DC (but current PRPNET software is not), running old PRPNET software without significant reasons will be just a waste of resources. |
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All PRPNET work is non trusted and must be double-checked on Boinc anyway.
I don't think double-checking the entire Factorial project is a good idea. According to: https://www.mersenneforum.org/showpost.php?p=599226&postcount=303 , Ryan Propper has already checked the +1 and -1 factorials from n=150K-330K (we're currently at n=305K), so PRPNET is pretty much a double-check of Ryan's work.
While it's theoretically possible to find a new prime during a triple-check on that range, the chance is so small that it would be like winning the lottery twice in a row.
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My largest prime: 167206862โ^131072+1 (1,077,839 digits)
My largest twin prime: 12599682117โยทโ2^211088+/-1 (63,554 digits)
My pictures: https://www.flickr.com/people/michael-kwok/ |
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 Michael Goetz Volunteer moderator
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All PRPNET work is non trusted and must be double-checked on Boinc anyway.
I don't think double-checking the entire Factorial project is a good idea. According to: https://www.mersenneforum.org/showpost.php?p=599226&postcount=303 , Ryan Propper has already checked the +1 and -1 factorials from n=150K-330K (we're currently at n=305K), so PRPNET is pretty much a double-check of Ryan's work.
While it's theoretically possible to find a new prime during a triple-check on that range, the chance is so small that it would be like winning the lottery twice in a row.
First of all, BOINC gets so much more participation than PRPNet, and over time, hardware has gotten so much faster, that double checking the entire *anything* that was done on PRPNet usually takes a surprisingly short amount of time. We're already fairly close to being caught up with the double checking.
Secondly, we don't count "both computers said it's composite" as reliable. The residues have to match, otherwise they could both be wrong. And, yes, that happens. It doesn't matter how rare it is, it happens, so if we don't protect against it, then we can't be certain we've done all the tests correctly. 99.999% correct isn't good enough. 100% is the standard we work towards. Furthermore, "errors are rare" only is true when there are no systemic problems. We've had several occurrences where a systemic problem (software bug, bad driver, cheating, etc.) has produced large numbers of errors. We're rather stringent about requirements when it comes to insuring the reliability of results.
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My lucky number is 75898524288+1 |
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Nick
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100% is the standard we work towards.
I like 100% - math is where it is going to happen.
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JimBHonorary cruncher
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The other thing about this is that moving primorial and factorial to BOINC means new badges and people are going to commit serious computer resources to get those badges. We'll go through a lot of candidates pretty quickly. |
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Nick
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The other thing about this is that moving primorial and factorial to BOINC means new badges and people are going to commit serious computer resources to get those badges. We'll go through a lot of candidates pretty quickly.
I am glad I do not have to get this badge - if I understand correctly. |
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The other thing about this is that moving primorial and factorial to BOINC means new badges and people are going to commit serious computer resources to get those badges. We'll go through a lot of candidates pretty quickly.
Good to see you, Jim! |
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For factorial (sometimes called FPS, factorial prime search), you can see how far PRPNet has got on http://prpnet.primegrid.com:12002/, and you can see how far the double check of the work has come on the bottom of the page https://boincvm.proxyma.ru:30443/test4vm/user_profile/llr2_status.html.
For primorial (PRS) http://prpnet.primegrid.com:12008/, I do not think the double check has begun yet.
/JeppeSN |
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mikey
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The other thing about this is that moving primorial and factorial to BOINC means new badges and people are going to commit serious computer resources to get those badges. We'll go through a lot of candidates pretty quickly.
I am glad I do not have to get this badge - if I understand correctly.
Why not? If they bring the crunching to Boinc it will hopefully mean new badges as it hopefully won't be lumped in the with PSA anymore. Can you just imagine all the interest that would bring, kinda like bringing GFN15 etc into the cpu crunching again. All those people, like you, with those HUGE badges would now essentially start over on a brand new badge so they aren't stuck without a 'full set' of badges and an off color badge amidst their sea of badges. |
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Nick
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The other thing about this is that moving primorial and factorial to BOINC means new badges and people are going to commit serious computer resources to get those badges. We'll go through a lot of candidates pretty quickly.
I am glad I do not have to get this badge - if I understand correctly.
Why not? If they bring the crunching to Boinc it will hopefully mean new badges as it hopefully won't be lumped in the with PSA anymore. Can you just imagine all the interest that would bring, kinda like bringing GFN15 etc into the cpu crunching again. All those people, like you, with those HUGE badges would now essentially start over on a brand new badge so they aren't stuck without a 'full set' of badges and an off color badge amidst their sea of badges.
I'm beyond 100% capacity to work out stuff.
I would if I have to, but I just cannot work out much more stuff right now. |
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A lot of my early work on PrimeGrid was sieving for the factorial and primorial searches. I'm glad to see them finally coming over from PRPnet after so many years. Kind of sad that the sources of PSA credit will be done away with, but using BOINC is far more convenient for end users and gets the job done so much faster.
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There are still servers for www.noprimeleftbehind.net
https://www.mersenneforum.org/showthread.php?t=12224
server=G1400:25:1:www.noprimeleftbehind.net:1400
server=G1468:25:1:www.noprimeleftbehind.net:1468
server=G9000:25:1:www.noprimeleftbehind.net:9000
server=G2000:25:1:www.noprimeleftbehind.net:2000 |
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Michael GoetzVolunteer moderator
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There are still servers for www.noprimeleftbehind.net
https://www.mersenneforum.org/showthread.php?t=12224
server=G1400:25:1:www.noprimeleftbehind.net:1400
server=G1468:25:1:www.noprimeleftbehind.net:1468
server=G9000:25:1:www.noprimeleftbehind.net:9000
server=G2000:25:1:www.noprimeleftbehind.net:2000
You don't get PSA credit for any PRPNet server other than PrimeGrid's PRPNet server.
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My lucky number is 75898524288+1 |
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Is there much point in doing PRPNet to help tidy up if it is going to close down anyway?
It has been a lot of years since I ran the project and would have to re-download and install everything to get it working, if I can.
Is it worth the effort now if it is coming to BOINC anyway, I might be able to increase my badge level I suppose, maybe.
Conan
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Michael GoetzVolunteer moderator
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Is there much point in doing PRPNet to help tidy up if it is going to close down anyway?
It has been a lot of years since I ran the project and would have to re-download and install everything to get it working, if I can.
Is it worth the effort now if it is coming to BOINC anyway, I might be able to increase my badge level I suppose, maybe.
Conan
If you want to do it for the PSA badge, now's the time. Otherwise, you can wait until it's ready to go on BOINC with more modern software -- and a brand new badge or two.
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My lucky number is 75898524288+1 |
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When do you forecast that the Primorial and Factorial projects will be available on BOINC? |
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Michael GoetzVolunteer moderator
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When do you forecast that the Primorial and Factorial projects will be available on BOINC?
The best answer I can give is "When it's finished on PRPNet and the BOINC part is ready."
A lot of people behind the scenes are very busy in real life, and there's a lot of projects in the queue.
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My lucky number is 75898524288+1 |
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Well that didn't work.
I thought I would try and get my badge colour improved before time runs out but alas no joy.
As it has been 12 years (2011) since I last installed this PRPNet I followed the instructions given to me way back then as well as on this forum.
This all appeared to go well, the download the install the .ini update and even the start command.
4 instances were created as I had asked but nothing else happened.
I found that there were no permissions in the Project folder for the executable files (e.g. llr) so allowed that and still nothing.
Each instance has the same executable files but I can't seem to allow them to execute maybe this is the problem?
Anyway came out this morning and my computer would not boot (left running last night), just the splash screen.
I had to reset the CMOS to get it working again.
I issued the stop command for PRPNet but it said nothing was running anyway so I will leave sleeping dogs lie and wait for the BOINC versions of these projects to appear as I am not going to be able to help.
Don't want my computer to crash again, not sure if it was PRPNet but as it and XTERM were the only things installed and then the computer dies seems like a possible.
Never mind I tried and I failed, not totally unusual, I also failed 12 years ago but managed to actually get that working at the time.
Conan
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When PRPNET stops will PSA become suspended?
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Werinbert is not prime... or PRPnet keeps telling me so.
Badge score: 2x3 + 5x4 + 5x5 + 5x7 + 1x9 + 3x10 = 125 |
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streamVolunteer moderator
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When PRPNET stops will PSA become suspended?
PSA credit can also be awarded for test work like manual sieving or application testing - when such thing happens.
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