Amicable Numbers

Forum rules
Welcome to The Scottish Boinc Team boards. See forum rules in pinned post. If you can't be bothered then try not to be too naughty as I have a delete button to press and a ban hammer to swing.
User avatar
Alez
[ TSBT's Pirate ]
[ TSBT's Pirate ]
Posts: 8439
Joined: Thu Oct 04, 2012 1:22 pm
Location: roaming the planet

#1 Amicable Numbers

Unread post by Alez » Sun Jan 29, 2017 12:46 am

I've started a project to extend the exhaustive search limit from 1018 to 264 (~1.845*1019), and also to verify all amicable pairs below 1018. There are ~500,000 amicable pairs still to be found in the range 1018 - 264.

Since the amount of computations is so vast (over 500 CPU core-years; 1000 CPU core-years actually because the project uses replication), I'll need volunteers to help with the search. Everyone is welcome!

I've set up a BOINC server: https://sech.me/boinc/Amicable/

Those who want to participate will need to do the following steps:

Sign up here: https://sech.me/boinc/Amicable/create_account_form.php
Use invitation code "mersenneforum" (without quotes) when you sign up.
Download and install BOINC client if you haven't done it yet: https://boinc.berkeley.edu/download.php
Those who are new to BOINC should first browse https://boinc.berkeley.edu/ and read some manuals/FAQs there.
When BOINC client asks you to add/join a project, provide the following URL:

https://sech.me/boinc/Amicable/

Don't try to find this project in the list in BOINC client, it's not there yet. You'll have to copy-paste the URL.
When BOINC client asks you for credentials, enter email/password of the account you created in step 1.
BOINC client should then connect to the server and start running tasks for the project.


Please report all bugs/issues you encounter either here or on message boards on the project's server: https://sech.me/boinc/Amicable/forum_index.php

The program that will run on your PCs is open-source and can be found here: https://github.com/SChernykh/Amicabl.../boinc-version
Only Windows 64-bit and Linux 64-bit are supported now. I'm also waiting for bug reports/other suggestions at Github.
The best form of help from above is a sniper on the rooftop....
Image

User avatar
Alez
[ TSBT's Pirate ]
[ TSBT's Pirate ]
Posts: 8439
Joined: Thu Oct 04, 2012 1:22 pm
Location: roaming the planet

#2 Re: Amicable Numbers

Unread post by Alez » Sun Jan 29, 2017 12:47 am

Project is MT and available for 64 bit systems both doze and linux.
The best form of help from above is a sniper on the rooftop....
Image

User avatar
scole of TSBT
Boinc Brigadier
Boinc Brigadier
Posts: 3778
Joined: Mon Feb 03, 2014 2:38 pm
Location: Goldsboro, (Eastern) North Carolina, USA

#3 Re: Amicable Numbers

Unread post by scole of TSBT » Wed Feb 22, 2017 3:16 pm

The project now has Nvidia and ATI GPU test apps. Be sure to select Run test apps in the project prefs.
Image

User avatar
scole of TSBT
Boinc Brigadier
Boinc Brigadier
Posts: 3778
Joined: Mon Feb 03, 2014 2:38 pm
Location: Goldsboro, (Eastern) North Carolina, USA

#4 Re: Amicable Numbers

Unread post by scole of TSBT » Wed Mar 29, 2017 3:36 pm

FYI...

The project has preferences to control how many cores/threads to use for CPU WUs. The default is 1, but you can set it use as many as you want. I don't think there's any benefit for earning more credit but using more cores/threads takes less time to complete WUs. Just depends if want to run a more slow running WUs or fewer fast running WUs.

The project also has preferences to control the number of kernels on GPU WUs. The default is 20 which will have a high utilization rate on your GPU. If your PC UI/screen seems unresponsive or jerky while running the GPU WUs or you have trouble keeping the GPU temps down at a safe level (I keep mine below 70C), then reduce the number of kernels. I dropped mine from 20 to 16 and my GTX 1070 temps dropped from 70C with the fan running at 80% to 65C with fan running at a quieter 70%. If you decrease the number of kernels the WUs will take longer.

Post Reply Previous topicNext topic

Return to “Amicable Numbers”

Who is online

Users browsing this forum: No registered users and 1 guest