1)
Message boards :
Generalized Fermat Prime Search :
Guess the number of digits in the LAST GFN-17-LOW prime
(Message 152980)
Posted 520 days ago by  matzetoni
999666 digits
:)
|
2)
Message boards :
Generalized Fermat Prime Search :
GFN-1x Small Primes search starts 2021-01-21
(Message 152791)
Posted 527 days ago by matzetoni
If all software issues will be solved, I hope that we'll start new search in January 2022. Or, really, may be something else? I'm open for ideas.
Would it be possible to port Yves' Generalized Fermat Progression Code (https://github.com/galloty/GFP/) to BOINC and search together for the next term (n=9)?
|
3)
Message boards :
Generalized Fermat Prime Search :
GFN-1x Small Primes search starts 2021-01-21
(Message 150292)
Posted 763 days ago by matzetoni
Do you think there will be more GFN-13 consecutive primes in the new search range? If so, how many are expected?
|
4)
Message boards :
Number crunching :
Google Colab and its free GPUs
(Message 150209)
Posted 770 days ago by matzetoni
Just like PG any other BOINC project can be run , you would only have to change one line in the code below, specifically the project link which should be shown in BOINC e.g. when you click "Properties" on a project in the projects tab (GUI). CPU tasks are done too, if you have set the project's preferences right. Note that Colab machines have only 2 CPU cores, so only run small tasks. I have no experience with the non-BOINC projects but as long as they have a Linux executable and the tasks are short enough it should be possible to run them on Colab machines, although the set up might be a bit more complicated than for BOINC.
import os.path
!apt-get update
!apt-get install boinc boinc-client
!cp /usr/bin/boinc /content
!cp /usr/bin/boinccmd /content
if not os.path.exists('/content/slots'):
!mkdir slots
if not os.path.exists('/content/slots/0'):
!boinc --daemon --attach_project "http://www.primegrid.com/" "account key here" <----- just change the project link set here
else:
!boinc --daemon
!boinccmd --set_gpu_mode always
!tail -f stdoutdae.txt
|
5)
Message boards :
Number crunching :
Google Colab and its free GPUs
(Message 150186)
Posted 772 days ago by matzetoni
Have you explicitly requested a GPU instance? For that you need to go to "Runtime" -> "Change runtime type". Then select "GPU". If it is "none" you will only get CPU instances.
|
6)
Message boards :
Number crunching :
Google Colab and its free GPUs
(Message 150149)
Posted 775 days ago by matzetoni
Does it still work?
Is it possible to continue with the machines that shut down at 12 hours?
GPU instances don't last more than a few hours for me, but CPU-only instances still seem to stay online for at least 12 h. I think they have introduced a maximum of weekly GPU usage.
AFAIK you can't continue BOINC calculations after a machine shuts down, you will get new tasks when you restart the machine. BOINC doesn't recognize the machine after a restart and will treat it like a new machine. This is why Colab is only suited for short tasks - so no conjecture projects or GFN20+, but PPSE or GFN15/16.
In general though it is possible on Google Colab to resume computations by making a save file in your Google drive which the machine can access. When starting a machine, give it access to your Drive and it will be able to resume computations from that checkpoint file. Since BOINC makes saves only locally on the machine - not in your Google Drive - it loses all progress after shut down.
|
7)
Message boards :
Number crunching :
Start discussing new goals for 2021
(Message 146311)
Posted 910 days ago by matzetoni
- Reach the 900 Mega Primes overall (-> 345 MP!!)
Maybe we can round this one up to 365 mega primes overall? (average of 1 mega prime / day)
|
8)
Message boards :
Number crunching :
WW testing
(Message 144407)
Posted 959 days ago by matzetoni
GTX 1060 6GB, driver 442.50 on Windows 10:
1) 67029FBFBC1AEFB0
2) 2F32CAD23BA5B1CA
3) 2276306935816523 is a Wieferich special instance (-1 -3 p)
B8B040FA3813FEB2
|
9)
Message boards :
Generalized Fermat Prime Search :
GFN1 - GFN12 Status
(Message 144172)
Posted 965 days ago by matzetoni
Table from Yves. ...
Thanks!
Interesting that there are more GFN8 primes than GFN7 primes in your search range :)
And the accuracy of the estimates is quite remarkable.
|
10)
Message boards :
Generalized Fermat Prime Search :
GFN1 - GFN12 Status
(Message 144156)
Posted 965 days ago by matzetoni
A huge congrats on this achievement and to all involved! I will definitely help out with some GFN12 work when it goes online. Will it run on GPUs too or CPUs only?
Also I'm curious about the statistics. Would you mind posting a table of expected and actual number of primes for all N=1 to 11?
|
