21)
Message boards :
Cullen/Woodall prime search :
Cullen Woodall Sieve Resumed
(Message 162079)
Posted 27 days ago by  Michael Goetz
Michael,
I am temporarily running PPS Sieve. Do I select both CW Sieve and PPS Sieve so as not to have my GPU's idle waiting for the CW Sieve to be officially available or does PG have a default GPU app anyway?
Yes, you should select both.
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22)
Message boards :
News :
Restarting of Cullen/Woodall Sieve
(Message 162074)
Posted 27 days ago by Michael Goetz
Sometime later today (UTC) we expect to be resuming the Cullen/Woodall Prime Search Sieve.
For more information and discussion, please follow this link.
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23)
Message boards :
Cullen/Woodall prime search :
Cullen Woodall Sieve Resumed
(Message 162073)
Posted 27 days ago by Michael Goetz
In the very near future (probably tomorrow later today UTC) we will be turning on the work generator for the Cullen Woodall sieve.
Apps are available for the following:
* Windows 64 bit Nvidia OpenCL GPU apps
* Windows 64 bit AMD OpenCL GPU apps (new)
* Windows 64 bit Intel OpenCL GPU apps (new)
* Linux 64 bit Nvidia OpenCL GPU apps
* Linux 64 bit AMD OpenCL GPU apps (new)
* Linux 64 bit Intel OpenCL GPU apps (new)
The GPU apps should, for the first time, work well on iGPUS.
At the present time, there are no CPU apps and no Mac apps.
The current sieve file ends at n=25M and the new sieving will create a sieve file for 25M < N < 50M.
If you want, you can select CW-Sieve right now in anticipation of the first tasks becoming available.
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24)
Message boards :
Cullen/Woodall prime search :
Future CW-sieve.
(Message 162064)
Posted 27 days ago by Michael Goetz
The Cullen/Woodall Sieve will be reopening soon.
Watch this space for more information.
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25)
Message boards :
Problems and Help :
Low GPU scores earns daily!!
(Message 162018)
Posted 30 days ago by Michael Goetz
Welcome to PrimeGrid. Your English is excellent.
There's lots of reasons why computers run at different speeds. Every computer has different memory timings, different motherboard chipsets, different BIOS settings, and so forth.
Also, the statistics could be wrong. There's many things that can distort the statistics.
For example: a computer listed by BOINC as having two 1080ti GPUs will have two GPUs, but they won't necessarily be two 1080ti's. BOINC only knows what the first GPU is, and assumes (often incorrectly) that all the GPUs are the same. So that other computer with two 1080ti's might actually be one 1080ti and one RTX 4090. Such a computer would generate a lot more credit. It's impossible to know. Do not trust the statistics.
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26)
Message boards :
Number crunching :
Badges IV
(Message 161984)
Posted 32 days ago by Michael Goetz
Not sure if this is the correct thread but today I found my 300th GFN prime.
I think that makes me 3rd in the GFN all time chase.
That is very, very impressive. Congratulations!!!
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27)
Message boards :
Project Staging Area :
Primorial and Factorial projects will be stopped soon
(Message 161907)
Posted 35 days ago by Michael Goetz
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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28)
Message boards :
Number crunching :
Gotthold Eisenstein's Birthday Challenge
(Message 161896)
Posted 35 days ago by Michael Goetz
Final statistics:
Challenge: Gotthold Eisenstein's Birthday
App: 8 (PSP)
Fast DC tasks are NOT included.
(As of 2023-04-23 16:00:46 UTC)
34853 tasks have been sent out. [CPU/GPU/anonymous_platform: 34853 (100%) / 0 (0%) / 0 (0%)]
Of those tasks that have been sent out:
19300 (55%) were aborted. [19300 (55%) / 0 (0%) / 0 (0%)]
163 (0%) came back with some kind of an error. [163 (0%) / 0 (0%) / 0 (0%)]
11652 (33%) have returned a successful result. [11652 (33%) / 0 (0%) / 0 (0%)]
3737 (11%) are still in progress. [3737 (11%) / 0 (0%) / 0 (0%)]
Of the tasks that have been returned successfully:
1336 (11%) are pending validation. [1336 (11%) / 0 (0%) / 0 (0%)]
10316 (89%) have been successfully validated. [10316 (89%) / 0 (0%) / 0 (0%)]
0 (0%) were invalid. [0 (0%) / 0 (0%) / 0 (0%)]
0 (0%) are inconclusive. [0 (0%) / 0 (0%) / 0 (0%)]
The current leading edge (i.e., latest work unit for which work has actually been sent out to a host) is n=30254798. The leading edge was at n=29020606 at the beginning of the challenge. Since the challenge started, the leading edge has advanced 4.25% as much as it had prior to the challenge!
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29)
Message boards :
Generalized Fermat Prime Search :
Do GFN17Mega and PPS find the same prime numbers ?
(Message 161892)
Posted 36 days ago by Michael Goetz
Yes, you found a GFN-17 prime. I sent you the email a week ago telling you about it and asking for your name and permission to report. I just submitted it to T5K a few minutes ago, and will be visible on PrimeGrid soon after T5K verifies it.
No sorry, unless I'm mistaken, I found that prime number you emailed me about last week over 10 years ago !
And it had been reported to me on my account already at that time in the line "Primes found" in the subproject "Proth Primes search" !
There must be a malfunction somewhere.
And even now, since last week, this unique prime number is assigned to me in two places at once: in the sub-project "Proth Primes search" and also in the sub-project "Generalized Fermat Prime Search tasks".
What number did you find over 10 years ago?
The only other prime I see on your account was a double check you did in 2010, and that is not the same number as the prime you just discovered.
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30)
Message boards :
Project Staging Area :
Primorial and Factorial projects will be stopped soon
(Message 161878)
Posted 36 days ago by Michael Goetz
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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