Difficult timetable this year

[Volker Dirr]

I have also contributed with translation of TiTiTo to serbo-croatian language.

Ah... Hallo sinisav!
Nice to hear from you again. Welcome back in the forum.
Do you have a new email? I sadly wasn't able get through to you.
There are several new features in TiTiTo since your last translation.
Can i sent you the file to update the translation to the email that you used for user "sinisav" in this forum? 

[sinisav]

Hello Volker Dirr. My mail is the same. I have received your last file and keep it in my inbox. When I got sufficient time I will translate it. However feel free to send me latest version and I will translate it but dont expect it to be fast because this year I have 30 school periods per week and I have administration of one Students Year.

[sinisav]

Your second file is most satisfactory. However Im unable to get any results with your original file livub.fet. I even input key from finished timetable livub_2 and stuck on 480/552. I tried multiple timetables 10 of them for 120 minutes and nothing. I have downloaded latest version 6.9.5 for win 7 that Im execute from playonlinux. I dont know why cant get any results. Thank You again for your contribution. I was working last 30 days on this version and you save me a time. Thank You again. I will contribute to project.

[Liviu Lalescu]

I attach the input files, the solutions, and the random seeds before and after. If you open the file, put random seed before in FET interface, generate single thread (be careful, single thread!), it will solve and the final random seed will be the random seed after from this archive. Try firstly for liviub_5, which should only take 8 minutes.

If you are interested, I could try to generate on my computer more timetables tonight. Let me know.

Thank you for your kind intentions!

[sinisav]

Not for now. I will make public timetable and wait to see if teacher can notic any big mistake in entering data. If there is a problem I will contact you here. I will now try to recreate your solution.

[Liviu Lalescu]

I didn't listen to you and generated all night. I could find 3 additional timetables, attached to this post. I generated multiple on 8 threads with time limit of 1 hour each.

[sinisav]

So I tried to recreate liviub5.fet and only success with manual entering generator key in program, and got solution for 25 minute. So this is 3 time longer then on your PC (8 minutes). This mean that if You used 1 hour for multiple timetable that I must use 3 hours to expect to get some solution. And as I understand you got only 3 finished timetable in 100 generated. I will now try to start it multiple 4 thread in 3 hours each to see what I will get.

[Liviu Lalescu]

I recommend the number of cores, not threads. If you have 2-core/4-threads computer, you might want to generate on 2 FET threads. If you have 4-core/8-threads computer, you might want to generate on 4 FET threads.

If you really need, I could try to help you with another generation tonight - just let me know.

[sinisav]

No need at all for now to generate new. We will start with timetable you provide from monday. You can see how I put results for teachers and students on www.yuche.tk.

[Liviu Lalescu]

OK, great! But the link does not work. It hangs forever.

[Liviu Lalescu]

Seems like you need to put it without www. in front of the link.

Oh, and the years are 2022 (last year)?

Oh2, and the timetables are from 21 August, made by you?

[sinisav]

Year are 2023. I forgot to change it. Timetables are for this year obviously.

[Liviu Lalescu]

I see. And I need to check the red ones, on the right. I thought the green ones are the good ones.