Padls Total subproject running fine

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Tomáš Brada
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Message 3483 - Posted: 25 Jul 2019, 8:37:19 UTC
Last modified: 30 Jul 2019, 19:54:15 UTC

Better late than never. The PADLS Total experiment described in this thread is running fine on this server and is producing good results.

Technical: the search space has been split to so called segments. From each segment one workunit is generated. The workunits can be made any size, but are currently set to run approximately two hours on my computer. Once result of a workunit is returned to the server, it is picked up by the validator program. This program checks the result validity, saves the result into the database and generates a new workunit to continue processing the segment.

Results are exported twice a day in, and they are available for download as text or sql.

The search algorithm is not the most efficient, but gives reasonable results. A effort was initiated to install the subproject over at Ice00's server server.

Source Code.
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Natalia Makarova
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Message 3484 - Posted: 25 Jul 2019, 10:15:48 UTC - in response to Message 3483.  

The search algorithm is not the most efficient, but gives reasonable results.

Do you know more efficient algorithms?
I know, for example, algorithm of the multisymmetry that now works on my PC.

A effort was initiated to install the subproject over at boinc.Progger.info server.

"boinc.Progger.info server" ???
And what is the result?
Progger should replace the CFs DLS check program with family_mar.
I wrote about this on the ODLK forum.
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Message 3485 - Posted: 25 Jul 2019, 15:21:02 UTC

Perhaps it was boinc.Multi-Pool.info
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Natalia Makarova
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Message 3489 - Posted: 31 Jul 2019, 3:30:08 UTC
Last modified: 1 Aug 2019, 1:31:49 UTC

A second group of four pairs ODLS found in the project

[DLK(4)]
0 6 7 9 8 4 5 2 3 1
9 1 6 4 2 8 3 5 0 7
4 0 2 1 5 9 8 3 7 6
1 7 8 3 6 0 4 9 2 5
3 9 1 7 4 6 2 8 5 0
6 3 0 2 7 5 9 1 4 8
5 2 3 8 1 7 6 0 9 4
8 4 9 5 3 1 0 7 6 2
7 5 4 0 9 2 1 6 8 3
2 8 5 6 0 3 7 4 1 9
[mate#1]
6 2 4 5 1 7 0 3 8 9
0 5 8 9 6 3 4 1 2 7
4 8 1 0 7 9 2 5 6 3
2 9 0 3 5 4 1 8 7 6
7 3 6 2 8 0 9 4 5 1
9 1 5 4 3 2 6 7 0 8
3 0 2 6 4 8 7 9 1 5
5 6 7 8 9 1 3 0 4 2
1 4 3 7 2 5 8 6 9 0
8 7 9 1 0 6 5 2 3 4
[mate#2]
6 2 4 5 1 7 0 3 8 9
0 5 8 9 6 3 4 1 2 7
4 9 1 0 7 8 2 5 6 3
2 8 0 3 5 4 1 9 7 6
7 3 6 2 8 0 9 4 5 1
9 1 5 4 3 2 6 7 0 8
3 0 2 6 4 9 7 8 1 5
5 6 7 8 9 1 3 0 4 2
1 4 3 7 2 5 8 6 9 0
8 7 9 1 0 6 5 2 3 4
[mate#3]
6 2 4 5 1 7 0 3 8 9
0 5 8 9 7 3 4 1 2 6
4 8 1 0 6 9 2 5 7 3
2 9 0 3 5 4 1 8 6 7
7 3 6 2 8 0 9 4 5 1
9 1 5 4 3 2 6 7 0 8
3 0 2 6 4 8 7 9 1 5
5 6 7 8 9 1 3 0 4 2
1 4 3 7 2 5 8 6 9 0
8 7 9 1 0 6 5 2 3 4
[mate#4]
6 2 4 5 1 7 0 3 8 9
0 5 8 9 7 3 4 1 2 6
4 9 1 0 6 8 2 5 7 3
2 8 0 3 5 4 1 9 6 7
7 3 6 2 8 0 9 4 5 1
9 1 5 4 3 2 6 7 0 8
3 0 2 6 4 9 7 8 1 5
5 6 7 8 9 1 3 0 4 2
1 4 3 7 2 5 8 6 9 0
8 7 9 1 0 6 5 2 3 4

See the illustration.

I loved kaleidoscope as a child :)
I am currently working on the problem of DLS with patterns.
See topic
https://boinc.progger.info/odlk/forum_thread.php?id=129
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Tomáš Brada
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Message 3495 - Posted: 2 Aug 2019, 7:15:53 UTC

Outage.
A problem occurred and both scheduler and processing daemons are offline. I expect the finished tasks to remain at users' computers, to be uploaded after the problem is solved. If there are more pressing issues, please write. Forum should continue working.
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Message 3496 - Posted: 2 Aug 2019, 20:52:14 UTC
Last modified: 2 Aug 2019, 21:01:52 UTC

It seems to be happening quite often. Every other day or so i'll find my PCs unable to upload. Some time later I have new tasks.
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Natalia Makarova
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Message 3497 - Posted: 3 Aug 2019, 5:37:28 UTC - in response to Message 3495.  
Last modified: 3 Aug 2019, 5:38:01 UTC

A problem occurred and both scheduler and processing daemons are offline. I expect the finished tasks to remain at users' computers, to be uploaded after the problem is solved.

The problem seems to be very serious :(

Workunits waiting for validation 12117
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Message 3498 - Posted: 3 Aug 2019, 16:07:47 UTC - in response to Message 3497.  

Many workunits waiting for validation is not a serious problem, they will just be processed later.
The scheduler or feeder being down is serious - means that clients are not able to upload finished tasks.
The later has been fixed.
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Message 3499 - Posted: 3 Aug 2019, 16:09:12 UTC - in response to Message 3496.  

It seems to be happening quite often. Every other day or so i'll find my PCs unable to upload. Some time later I have new tasks.

While that is not normal, boinc is designed to handle such situations gracefully. Yes, we had some connection outages.
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Message 3500 - Posted: 4 Aug 2019, 22:06:25 UTC

Down again for awhile today.
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Message 3501 - Posted: 5 Aug 2019, 9:10:47 UTC

One hard drive was added to the server and the data and database volumes were moved there. LVM hung-up while creating a snapshot so a reboot was necessary. Backup was taken prior to this. Then a cleaning process was started. I do not know why, but deleting of old results is somewhat slow. The assimilator will remain be suspended while the cleaning is in progress, at lease initially. There is still good reserve of ready to send tasks. Indeed, there was some downtime.
If there are any problems, do not hesitate to write.
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Message 3504 - Posted: 6 Aug 2019, 16:50:07 UTC

Everything was normal for a few hours, then the assimilator stopped working again. I will fix it.
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Message 3507 - Posted: 7 Aug 2019, 17:30:27 UTC

My pending is clear now.

Are the completed tasks still being purged? I noticed it went from 10k to 5k and now back to 6k. Keeping many tasks just puts extra load on the server.
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Message 3508 - Posted: 8 Aug 2019, 6:51:00 UTC - in response to Message 3507.  

My pending is clear now. Are the completed tasks still being purged? I noticed it went from 10k to 5k and now back to 6k. Keeping many tasks just puts extra load on the server.

Great. All validation pending tasks have validated and assimilated ok. Except one, and that was resolved.
For purging, there is a time limit set. Iirc it's two weeks so we can investigate failures. The old tasks do not really put much load, because the database has indexes (indices) on the state and assimilated tasks are not considered at all when processing or assigning tasks. Anyway, the purge process is still set to run from time-to-time, but possibly not fast enough. I will adjust it, once there is more data.
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Natalia Makarova
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Message 3520 - Posted: 17 Aug 2019, 10:38:29 UTC
Last modified: 17 Aug 2019, 10:46:58 UTC

Tomáš Brada
Is something not working in the project again?
The experiment has been running for two months now.
Why is there no stability?
What is the problem?

Very little information!

By the way, when will the project database appear?
We agreed on the monthly publication of the project results.
Did not you forget?

You ignored my question here.
What does it mean?
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Natalia Makarova
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Message 3521 - Posted: 17 Aug 2019, 10:59:26 UTC

There is information in other forums.
For example

Einen Hinweis möchte ich geben: Nach jedem Kontakt zum Server wird der Client bei diesem Projekt für eine Viertelstunde gesperrt. Daher muss ein Vorrat von mindestens 3-4 Stunden eingestellt werden, damit der Rechner nicht leer läuft. Die Viertelstunde ist vor Allem dann lästig, wenn man einen neuen Rechner beim Projekt anmeldet und schnell losrechnen will. Der Rechner kaut dann eine längere Zeit auf einer einzigen WU, bis die anderen Threads auch versorgt sind.

https://www.seti-germany.de/forum/threads/8784-ODLK-(Lateinische-Quadrate)/page4?p=321153&viewfull=1#post321153

I assume problems are due to checkpoints (?)
ODLK and ODLK1 projects work without checkpoints.
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Message 3525 - Posted: 17 Aug 2019, 17:45:02 UTC - in response to Message 3521.  

There is information in other forums.
For example

Einen Hinweis möchte ich geben: Nach jedem Kontakt zum Server wird der Client bei diesem Projekt für eine Viertelstunde gesperrt. Daher muss ein Vorrat von mindestens 3-4 Stunden eingestellt werden, damit der Rechner nicht leer läuft. Die Viertelstunde ist vor Allem dann lästig, wenn man einen neuen Rechner beim Projekt anmeldet und schnell losrechnen will. Der Rechner kaut dann eine längere Zeit auf einer einzigen WU, bis die anderen Threads auch versorgt sind.

https://www.seti-germany.de/forum/threads/8784-ODLK-(Lateinische-Quadrate)/page4?p=321153&viewfull=1#post321153

I assume problems are due to checkpoints (?)
ODLK and ODLK1 projects work without checkpoints.



Hello Natalia,
Are you the same scientist as on ODLK / ODLK1 / Rake ???

By the way, please, all in english. So everyone is able to understand.

Please Natalia Makarova, clrarify. Thank you.

By the way, your admin asked me to send report by mai (real mail, not on PRJ) l. I did, with all files in slot of WU. He answered in a unknown language.
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Natalia Makarova
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Message 3526 - Posted: 17 Aug 2019, 17:58:01 UTC - in response to Message 3525.  

Are you the same scientist as on ODLK / ODLK1 / Rake ???

Yes, I am the same scientist who is in ODLK and ODLK1 projects.
But not Rake Search.

By the way, please, all in english. So everyone is able to understand.

This is an original quote in German. Please use the Google translator.
I do not know either English or German and use a translator.
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Message 3528 - Posted: 17 Aug 2019, 18:28:24 UTC - in response to Message 3526.  

Are you the same scientist as on ODLK / ODLK1 / Rake ???

Yes, I am the same scientist who is in ODLK and ODLK1 projects.
But not Rake Search.

By the way, please, all in english. So everyone is able to understand.

This is an original quote in German. Please use the Google translator.
I do not know either English or German and use a translator.



Natalia, Thank tou very much .
So Brada/ODLK/ODLK1 is the same. Different scientist approach, but same research team.
Due to the so much problem on Brada, I stay on ODLK/LatinSqares.
Best regards.
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Message 3531 - Posted: 20 Aug 2019, 2:33:44 UTC
Last modified: 20 Aug 2019, 2:35:17 UTC

Tomáš Brada
Now I found in the file https://boinc.tbrada.eu/download/tot_odlk_plain.txt 319701 CF ODLS
Деименатор

Введено имён   : 319705
Построено СНДЛК: 319701
Время работы   : 1.669 сек

August 18, copied from file 319692 CF ODLS.
In all, just 9 CF ODLS has been found.
It is right?
Are all new solutions already in the file?
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