What is ODLK1?

BOINC-project ODLK1 continues to solve the problem of BOINC-project ODLK.
The project generates a database of canonical forms (CF) of diagonal Latin squares (DLS) of order 10 having orthogonal diagonal Latin squares (ODLS).
The necessary definitions for the theme can be found here:

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User of the Day

User profile Profile Rhodan71
I live in France where I work as a freelance in software development. I support every project but especially astronomic and mathematic ones.


Electrical work 3
I just being informed now that tomorrow 29/05/2024 in my area there will be another electrical power off from 9:00 to 16:00!!!!

This means that battery power supply cannot handle 7 hours of power failure, so I need to program that the server shot down automatically before 9:00 to preserve it.

It need to be manually power on and this could be done at 19:00.

Sorry for the problems.

28 May 2024, 16:47:48 UTC · Discuss

Electrical work 2
It seems that in my area electrical works are every month!

On 16/05/2024 from 9:00 to 13:00 there is no electrical power in the area again, so no connection to server (power supply should be able to carry the 4h of power off and still run the server, but without connection to internet).

13 May 2024, 17:17:53 UTC · Discuss

Some issues
I just see today that the OS update of some days ago has stopped something in connection.

Now I reboot all to be sure new kernel were loaded.

Actually log seems good, so I hope that the Boinc activity is restored good.

7 May 2024, 19:15:16 UTC · Discuss

Electrical work
On Thusday 23/4/2024 there are planned some electrical works in my area from 9:00 to 13:30 with power that probably will be tuned off too.

So the server could be not reachable during that times due to loss of internet connection.
21 Apr 2024, 6:37:44 UTC · Discuss

Lightning bolt
There was a lightning bolt on 1/4/2024 in the night that damage (e.g. they broke) many electrical devices in the area (1Km^2).
Internet connection were restored only in the morning (as provider is at 200m distance of the server and it was damaged too).

Even if the server is behind a power supply, it get in non operational state (e.g the data disk was disconnected), maybe due to the heavy electrical current it passes onto the battery power supply.

Every disk of the server were un-mount from it and tested in another machine and all data were ok, even if the server did not boot properly.

Now it is running in emergency mode (e.g. it need a manual start up, so if it restart from eventual current blackout, it will no boot) and I will monitoring if all is going right.

During the weekend, I will work on fix it, so the server will be disconnected for some times during the day.

Remember that if the internet connection is on and the server is off, you can see some message here: http://boinc-status.multi-pool.info/ about his state.

Please, remember to set up a backup BOINC project in case of emergency. Thanks.
3 Apr 2024, 17:56:28 UTC · Discuss

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