News archive

Internet connection restored
So, the electrical power was shout down for 3,5h on Sunday in all the municipal area and the very good news was that the UPS (that was supposed to function for one hour) lasted for all the time and it was not near to finish the power reserve.

UPS is for saving integrity of server when there is no power, not to support all the rest of network equipments.

However when the power was back there were not internet connection!

As the service provider repeater is located 200m of distance and there were no workers on it (so all was supposed to be good), I contacted them soon for the problem as even their networks devices where in the area of power off so the problem could be here and/or there.

As it was Sunday their replay were at the rate of one in an hour and they let me makes lot of test until say at night that they will send a specialized technician to solve it.

I pass all the followed days to solicit intervention because the situation was critical for ODLK1, but it was in vain: assistance with ten-year customers proved to be practically absent!

Really unacceptable for a supplier who should guarantee a service that is always active 24h/24h!

This has now been, today they have restored the connection (it seems that the electrical works have damaged many devices throughout the area of 1Km^2).

I apologize for the situation but even replace the current internet providers will takes at least 20 working days, so the only solution was to attend their intervention.

Thanks
19 Feb 2021, 20:12:47 UTC · Discuss


Power off on 14/2/2021 for some hours
Hi,

on 14/02/2021 from 8:30 to 12:30 (Rome time) there will be a switch off for current in my region.

Maybe the power supply will last for 1 hour, then the server will shut down until current return.

thanks
13 Feb 2021, 14:26:37 UTC · Discuss


DB CF ODLS of order 11
I am officially opening a new project DB CF ODLS of order 11.

Some research on this project has already been done in the topic "ODLS of orders n>10"
https://boinc.multi-pool.info/latinsquares/forum_thread.php?id=109
and
https://boinc.progger.info/odlk/forum_thread.php?id=162

Working theme created
https://boinc.progger.info/odlk/forum_thread.php?id=176

Tomáš Brada helped me in my research.
See the topic "Diagonal Latin squares of order n>10"
https://boinc.tbrada.eu/forum_thread.php?id=3104

The project has good software, which was created by Belyshev and Harry White.

At the moment I have a small database core containing 109025 CF ODLS.

I invite everyone to join the project.
I will consider your suggestions for launching a project on the BOINC platform.
16 Jan 2021, 7:19:07 UTC · Discuss


DB CF ODLS of order 9
I am officially opening a new project "DB CF ODLS of order 9" .
This is not a BOINC project yet, but a manual project. I have been working on a project for a long time on a PC.
But you can turn a manual project into a BOINC project if you want.

Here you will find the software you need
https://yadi.sk/d/8DXzqszSThG4zA
(small archive, 2.1 MB)

The software was created by Belyshev and Harry White.

This is the script that works for me

@echo off
DLS9R1BdFdCP.exe
copy TemporaryDLS9R1BdFd.txt input.txt
kanonizator_dlk9.exe < vvod1.txt
copy output.txt input.txt
ortogon_u.exe < Y.txt
copy /b rez.txt+mates.txt rez.txt
pause

Before starting the script, you must write the starting DLS to the file DLS9R1BdFdLast.txt.
The starting DLS can be any SN DLS from any rule or any CF from the existing database.

The following programs are running in the process:
1. DLS9R1BdFdCP.exe, a program for generating CH DLK in the selected line, by Harry White;
2.kanonizator_dlk9.exe, program for SN DLK canonization, author Belyshev;
3. ortogon_u.exe, program for checking DLS on ODLS, by Belyshev.
The programs run on Windows.

The process can be looped.
The results are written to the file rez.txt.
For convenience, I copy the results from the file mates.txt, this is one of the output files of the program ortogon_u.exe.
Therefore, it is important: be sure to find all orthogonal DLSs to the squares obtained in the file rez.txt using the program ortogon_u.exe.
Then canonize all the results obtained.
And then the post-processing of the received CF ODLS (search for ODLS from ODLS) will already go.

In the archive you will find the file Variants_of_Diagonal.txt.
These are the rules (side diagonals) for the 9th order SN DLS.
I sent this file to Harry before he started writing the generator program.

You can generate SN DLS in any selected rule in any (reasonable) amount with the Harry DLS9R1BdFd.exe program, which you will also find in the archive.
Generation instructions are understandable at program requests.
If you have any questions, ask.

I posted a small database of CF ODLS for a long time here
https://yadi.sk/d/qbqG65bt3Re8RP
In this initial part of the database, there are only 6795 CF ODLS.
At the moment, the database of CF ODLS compiled by me contains 24153 CF ODLS.
This is, of course, very little yet.
But it is difficult to get many solutions on one PC.

Please join the project!

For more detailed instructions, please contact me.
You can write in the subject
https://boinc.progger.info/odlk/forum_thread.php?id=44
in the PM, as well as in the home box
natalimak1@yandex.ru

And a very important question!
I ask everyone to report the known data on the CF ODLS database of the order of 9, if you know such data.
Excluding the results of the BOINC Rake Search project. Partially the results of this project are included in the database I compiled. The rest of the results can also be included.
10 Aug 2020, 7:50:53 UTC · Discuss

Holiday
hi,

I'll be on holiday for 10/12 days from tomorrow without access to the server.

I hope that all goes fine as in the last months.

Thanks
7 Aug 2020, 19:39:43 UTC · Discuss


Hardware problems
As Linux is almost perfect if you get the same problem two times in short time, that means that there is an hardware problem behind!

The first time I can think it was due to the 3 working people that add new devices in my network for having three more connection speed of actual one as they manage to add cables and move devices during the operation.. and after them you got a DB related problem into the server just 5 minutes after they gone...

But after having rebuild the DB from scratch (without losing any data) and get the same error..then it is an hardware error (maybe related to the system disk that manifest some operation degradation that should not happen with his young life)

Actually the DB is now moved onto the ODLK1 Boinc disk and this should stay good until the new disk arrived and I can move system to it (maybe in 15 days).

Thanks
29 Oct 2019, 21:34:44 UTC · Discuss


The results of ODLK and ODLK1 projects as of January 1, 2019
Dear participants!

At the moment our database contains 5714925 unique CFs ODLS.
See message
https://boinc.multi-pool.info/latinsquares/forum_thread.php?id=54&postid=693#693

All results are published.

Thank you very much for your work!
22 Jan 2019, 11:59:45 UTC · Discuss


Congratulations to the team Gridcoin!
Congratulations to the team Gridcoin with a record - a billion points!

Gridcoin 723 2,661,267 1,004,314,911 United States Другое

I ask the administrators of the project ODLK1 Progger and ice00 to issue the corresponding badge.

Team Gridcoin: thank you very much for participating in the project!
11 Jan 2019, 16:36:52 UTC · Discuss

Autonomous Subproject
Dear participants!

I'm trying to run autonomous subproject.
The subproject uses my algorithm “pseudo-associative DLSs”.
Jobs are generated by my program. Jobs check is performed by Belyshev colleague program (family_mar.exe).

I ask everyone to support the subproject.
I really need your help!
I have thousands of tasks, several algorithms, I perform dozens of experiments.
I can't handle all the work!

Perhaps this attempt will help to further translate the stand-alone subproject onto the BOINC platform.
I am ready to do it right now. But I do not know how to run subprojects in the BOINC platform.

Here is the first block of tasks
https://cloud.mail.ru/public/NB13/7aGzktuGe

Try everyone! It works!
Read on for details.
16 Dec 2018, 12:46:53 UTC · Discuss


The raw results for September - December 2018
Dear participants!

You can download the raw results for September - November 2018 from the ODLK1 project via the following link
https://drive.google.com/open?id=1wIf97_bLDvnb1WalOsjU9vODZqRZ_WNw

The results were published by the project administrator ice00.
3 Dec 2018, 4:10:44 UTC · Discuss


Happy Birthday, ODLK1 project!
Dear participants!

Today BOINC project ODLK1 is one year old.

Happy Birthday!

Your best gift is your participation!

See our gifts.
5 Nov 2018, 3:21:30 UTC · Discuss


Holiday
From 16.8 to 26.8 I will be on holiday so I will not have physical or internet access to the server.

Server is onto a power unit supply that can gives up to 1h of current in case of external blackout.
I hope that Marphy low did not apply during the holiday :)

Thanks
15 Aug 2018, 14:16:15 UTC · Discuss


Three millions of unique CF ODLS
Dear participants of the ODLK and ODLK1 projects!

You have overcome the boundary of 3,000,000 CF ODLS!

Thanks for your work!
2 Aug 2018, 12:55:24 UTC · Discuss


The contest for the best optimization of the program
Dear participants of the project!

Probably, there are many programmers among you.

A contest is announced to the best optimization of program of search the orthogonal LS for a given LS of order 10.
This is a very important program!

The author of this program is colleague S. Belyaev.
The program was created and posted for general use on the Math Help Planet forum on February 29, 2016.
http://mathhelpplanet.com/viewtopic.php?p=261989#p261989

You can download the archive from the following link
https://yadi.sk/d/2sX-6d_Vphfsx

The source code of the program in archive is available.
22 Jul 2018, 5:51:25 UTC · Discuss


How to protect intellectual property?
A very important topic.
We will discuss.

How did it all start?
Begin with this message on the forum boinc.ru
http://forum.boinc.ru/default.aspx?g=posts&m=90566#post90566

I quote

Statistics for the list of 2 000 697 CF ODLS
(download the link in the signature)


And in the signature for the post we see the link:
List of CF ODLS https://cloud.mail.ru/public/8Tbm/JjcinpEVu (2 000 697)

Since there are no links to the sources of results in the post (in the file by reference - I do not know whether there are links or not, since I the file did not download), naturally, the question arises: "Where are the drozhishki?"

The question on the forum boinc.ru I can not ask, because I locked there for 50 years.
Then I ask the administrator of the BOINC-project ODLK1 ice00.
I get the following answer:
Sorry, I had give him the results some days ago, but I can point him
that it cannot use them as he seems to ignore copyright.

Well, all as I expected.
After receiving the results from the administrator ODLK1, citerra puts them on the boinc.ru forum without specifying any sources of results.

I would like to note that earlier I have repeatedly drawn attention to the fact that the results of the ODLK and ODLK1 BOINC projects are the intellectual property of these projects and when copying the results for any purpose it is necessary to indicate a reference to the source of the results.
At the same time, I showed a copyright sign in both BOINC projects, for example, in the ODLK project
©2018 (C) Progger

But all my calls were in vain.
The results were copied by citerra and laid out without any reference.
Now the story repeats itself, now with the results obtained from the project administrator ODLK1.

This is the beginning. The continuation followed quite stunning.
I suggest that everyone will get acquainted with the beginning and advise how to protect the intellectual property of BOINC projects.

PS. Russian-speaking participants can read the topic here
https://boinc.progger.info/odlk/forum_thread.php?id=69
9 May 2018, 11:33:13 UTC · Discuss

Two million unique CF ODLS
Dear participants!

Your work has brought remarkable results.
At the moment we have in the data base two million unique CF ODLS.

Thank you for your participation!
1 May 2018, 8:23:59 UTC · Discuss


Profile creation and spam protection
Profile creation is enabled. Recaptcha is enabled for registration. After a while, spam users will be deleted.
19 Feb 2018, 8:17:46 UTC · Discuss


Application odlksym3
Application for the final search of all symmetric squares.
The current version is only for linux amd64, and I forgot to make a progress notification. Soon there will be an improved version for all platforms.
31 Jan 2018, 15:34:09 UTC · Discuss


The information about DB
DB is combined from ODLK and ODLK1 projects.

Here you can see DB to January 1, 2018.
https://yadi.sk/d/JE_nAvVk3R9635

View details
https://boinc.progger.info/odlk/forum_thread.php?id=1&postid=1280#1280

January 16, 2018 posted the first part of the database, containing 500,000 unique CF ODLS
https://yadi.sk/d/Of8_1d-b3RW43F

The second part of the database currently contains 128,825 CF ODLS.
27 Jan 2018, 16:31:25 UTC · Discuss


Project url changed
Now site uses SSL: https://boinc.multi-pool.info/latinsquares/
16 Jan 2018, 11:22:29 UTC · Discuss


Search in tails
Added application odlkmax for searching in the tails of rulers 57, 58, 59, 60, 61.
26 Dec 2017, 9:10:49 UTC · Discuss


New rulers
The rulers 58 and 59 have been added to the ODLK1 project.
Now we check in this project six rulers: 57, 58, 59, 60, 61, 66.
The check is performed from the beginning of rulers and in natural order.
All these rulers contain 100% CF.
15 Dec 2017, 9:05:10 UTC · Discuss


News
The statistics in project ODLK1

5-7.11.17 50 0
8.11.17 76 0
9.11.17 541 2
10.11.17 872 2
11.11.17 959 10
12.11.17 1356 6
13.11.17 939 8
14.11.17 1439 2
15.11.17 1496 0
16.11.17 2486 10
------
Total - 10254 CF ODLS

A unique group of three orthogonal pairs of DLS is found!

 0 1 2 3 4 5 6 7 8 9
 3 4 1 2 8 9 5 6 0 7
 9 7 3 4 5 8 1 2 6 0
 2 0 5 9 1 6 7 8 3 4
 8 3 4 6 7 1 2 0 9 5
 6 5 8 0 3 2 4 9 7 1
 1 6 9 5 0 7 8 4 2 3
 5 9 6 7 2 3 0 1 4 8
 7 8 0 1 6 4 9 3 5 2
 4 2 7 8 9 0 3 5 1 6
sq1

 0 1 2 3 4 5 6 7 8 9
 3 4 5 2 8 9 1 6 0 7
 9 7 3 4 1 8 5 2 6 0
 2 0 1 9 5 6 7 8 3 4
 8 3 4 6 7 1 2 0 9 5
 6 5 8 0 3 2 4 9 7 1
 1 6 9 5 0 7 8 4 2 3
 5 9 6 7 2 3 0 1 4 8
 7 8 0 1 6 4 9 3 5 2
 4 2 7 8 9 0 3 5 1 6
sq2

 0 1 2 3 4 5 6 7 8 9
 3 4 7 2 8 9 5 6 0 1
 9 7 3 4 5 8 1 2 6 0
 2 0 5 9 1 6 7 8 3 4
 8 3 4 6 7 1 2 0 9 5
 6 5 8 0 3 2 4 9 1 7
 1 6 9 5 0 7 8 4 2 3
 5 9 6 7 2 3 0 1 4 8
 7 8 0 1 6 4 9 3 5 2
 4 2 1 8 9 0 3 5 7 6
sq3

Square:
 0 1 2 3 4 5 6 7 8 9
 1 2 3 0 5 8 7 9 4 6
 7 0 6 5 3 4 9 1 2 8
 8 6 9 4 7 3 5 2 0 1
 6 9 7 1 8 0 4 3 5 2
 5 8 1 7 2 9 0 6 3 4
 2 4 0 6 9 1 3 8 7 5
 4 3 8 2 6 7 1 5 9 0
 9 7 5 8 0 6 2 4 1 3
 3 5 4 9 1 2 8 0 6 7

17 Nov 2017, 4:51:59 UTC · Discuss



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