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Diagonal Latin squares of order n>10 Deprecated: Creation of dynamic property BoincUser::$prefs is deprecated in /var/boincadm/prj/html/inc/forum_db.inc on line 164 (Message 4366) Posted 15 Jan 2021 by Tomáš Brada Post: We have three rules for SN DLS of order 17 More rules: 1 0 3 2 5 4 7 6 8 10 9 12 11 14 13 16 15 1 0 3 2 5 4 7 6 8 10 9 12 11 14 15 16 13 1 0 3 2 5 4 7 6 8 10 9 12 11 15 16 13 14 1 0 3 2 5 4 7 6 8 10 9 12 11 15 16 14 13 1 0 3 2 5 4 7 6 8 10 9 12 13 11 15 16 14 1 0 3 2 5 4 7 6 8 10 9 12 13 14 15 16 11 1 0 3 2 5 4 7 6 8 10 9 12 13 15 11 16 14 1 0 3 2 5 4 7 6 8 10 9 12 13 15 16 11 14 1 0 3 2 5 4 7 6 8 10 9 12 13 15 16 14 11 1 0 3 2 5 4 7 6 8 10 9 13 14 15 16 11 12 1 0 3 2 5 4 7 6 8 10 9 13 14 15 16 12 11 1 0 3 2 5 4 7 6 8 10 9 13 15 11 16 12 14 1 0 3 2 5 4 7 6 8 10 9 13 15 11 16 14 12 1 0 3 2 5 4 7 6 8 10 9 13 15 12 16 14 11 1 0 3 2 5 4 7 6 8 10 9 13 15 16 12 14 11 |
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Code and Servers :
Diagonal Latin squares of order n>10
(Message 4365)
Posted 15 Jan 2021 by Tomáš Brada Post: https://github.com/bmatzelle/gow/releases The sort program there is called gsort.exe (windows has program of same name). You can install the whole package (10MB) or copy just the gsort exe with two dlls. Includes few useful programs, like cut, diff, grep. |
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Diagonal Latin squares of order n>10
(Message 4361)
Posted 14 Jan 2021 by Tomáš Brada Post: Can you make the program remove duplicate CFs? The program is called sort. sort -u <input.txt JHep946hdpmD3PbVe64oR1i2JacXn5EZhBapLW1bdkDY4JdXfnDizzcaKLehQmyCFnBMwusRtF4PEhke4 JVUesFePXAN1rG8UWDrmYhv7h3UUqSqVraVEBWcofey2tPsEJpepgvNg8vu32qL8dazxSPiVu1Ttj29tL JZavs7uAV4CURwBtFMoJPcLBijAc1hE3FotZHERYCMPtfJ1PMTFPDqmULKieXppg11yArjb6WbfYS3zYz2 J39x3jjhxnHszoQpfcDrAzx27ZgCpvYW9JZU9nm4EozssVGc6mUYnCWuV7HzfwhWK2hEtntURM2pDGa9ins |
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Code and Servers :
Diagonal Latin squares of order n>10
(Message 4358)
Posted 14 Jan 2021 by Tomáš Brada Post: You did not answer the question Cache file helps to quickly canonicalize DLS. If not present, the program generates the missing file. But for orders 16+ is is very slow. So you can extract kanonb_cache_17.dat from a zip file, and try it out, it will solve in few seconds. It uses less than 400 MB of RAM. |
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Diagonal Latin squares of order n>10
(Message 4356)
Posted 13 Jan 2021 by Tomáš Brada Post: The program would have ended after reaching 5160960. I run your DLK and got the solution below. in: JQiBJzfpi4cDA7gjVeqHYS9v66FyyHaywfvhUvgBXnkJa2PbDv7UgMAgKYZupiCsckFX7b8kMdaEFFREt4gbPtRSf2 cf: JHep946hdpmD3PbVe64oR1i2JacXn5EZhBapLW1bdkDY4JdXfnDizzcaKLehQmyCFnBMwusRtF4PEhke4 num_dtrans: 204995269 0 2 C E 7 B 8 6 F 4 D 3 A 9 G 5 1 5 1 3 B D G A 8 E C 4 9 0 F 6 2 7 B 6 2 4 A C F 9 D 5 0 1 E 7 3 G 8 6 A 7 3 5 9 B E C 1 2 D G 4 F 8 0 2 7 9 G 4 6 0 A B 3 C F 5 E 8 1 D 4 3 G 0 F 5 7 1 A B E 6 D 8 2 C 9 A 5 4 F 1 E 6 G 9 D 7 C 8 3 B 0 2 C 9 6 5 E 2 D 7 0 G B 8 4 A 1 3 F D C B A 9 0 1 2 8 E F G 7 6 5 4 3 1 D F 6 C 8 5 0 G 9 3 E 2 B A 7 4 E G 5 D 8 4 9 3 7 0 A 2 F 1 C B 6 7 4 E 8 3 A 2 5 6 F 9 B 1 G 0 D C 3 F 8 2 B 1 4 D 5 6 G A C 0 7 9 E G 8 1 C 0 3 E F 4 2 5 7 B D 9 6 A 8 0 D 9 2 F G B 3 7 1 4 6 C E A 5 9 E A 1 G 7 C 4 2 8 6 0 3 5 D F B F B 0 7 6 D 3 C 1 A 8 5 9 2 4 E G Additionally I upload my cache files for the program: https://boinc.tbrada.eu/download/ndlk-dat-2101a.zip |
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Diagonal Latin squares of order n>10
(Message 4354)
Posted 11 Jan 2021 by Tomáš Brada Post: Code of square Canonical form: DaUayP5fWmYHjcNNj3JnBN6rQXiMjg6 24901 d-transversals. Found first 1075 ODLK found in path (1,1) to (1,5): https://boinc.tbrada.eu/download/DaUay.1.1-5.txt |
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Diagonal Latin squares of order n>10
(Message 4353)
Posted 11 Jan 2021 by Tomáš Brada Post: Releasing programs for DLK(N). Source on: https://github.com/tomasbrod/tbboinc Download windows build ec0d025846: https://boinc.tbrada.eu/download/ndlk-2101a.zip Download windows build b1b4dc24f04: https://boinc.tbrada.eu/download/ndlk-2101b.zip dlkconv.exe dlkconv.exe: (input-spec) [input] [(output-spec) [output] ** Diagonal Latin Square converter and normalizer ** input-spec: Endoded/compressed (e), Alphanumeric (a), stdin (s) File (f). Encoded input can be passed immediately on command line. Othervise a NxN matrix of decimal numbers, or Alphanumeric (a) must be passed via stdin or file. Multiple orders (N) may be mixed on input. Empty lines and (one) trailing spaces are ignored. output-spec: (e)(a)(f), stdout (s), Compact (c), Diagonal (d) LS normalized on first row are written to stdout by default. Space between output squares are ommited in Compact (c) mode. With (d), output matrix is normalized on main diagonal. Example dlkconv.exe e 7yPG4 dc -- decode 7yPG4 and normalize diagonal Author: Tomas Brada (GPL) ortogonb.exe ortogonb.exe: [-co] (Input) >output ** Search for Orthogonal mates of Diagonal Latin Square ** -c print number of transverses and exit -o output orthogonal mates like they are found Input: encoded diagonal latin square (see dlkconv.exe) Output: metadata and orthogonal squares in encoded format Returns 0 if orthogonal mates found, 1 if not. Multi Thread. Example ortogonb.exe BJMzz45jMmo1FfZtCjN Author: Tomas Brada (GPL) ortogonbw.exe ortogonbw.exe: (Input) (Path) >output ** Search for Orthogonal mates of Diagonal Latin Square ** Input: encoded diagonal latin square (see dlkconv.exe) Output: metadata and orthogonal squares in encoded format Prints to output immediately as square is found. Single thread. Path: sequence of space-separated numbers narrowing the problem space Explanation: L(level) c(column) choosen-row / count-rows Specify number as Path from 1 up to count-rows to narrow down the Search, specify multiple numbers to narrow down further. Example: ortogonbw.exe DeGkNZGc43qaHWnNUsjfvuQNbREDKc4 3 120 Author: Tomas Brada (GPL) kanonb.exe kanonb.exe: <input >output ** Diagonal Latin Square Kanonizer ** Input and Output in Encoded form (see dlkconv) Uses cache files kanonb_cache_NN.dat in the current directory. ortowalk.exe ortowalk.exe: FileName ** Explore the full graph of DLK orthogonality ** Insert the initial CF-DLK into FileName.todo then run "ortowalk.exe FileName" (without the .todo) Author: Tomas Brada (GPL) rules.exe rules.exe: (N) >output ** Diagonal Latin Square Rule Enumerator ** Enumerates all rules of CF-DLK of order N Uses cache files kanonb_cache_NN.dat in the current directory. Author: Tomas Brada (GPL) |
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Diagonal Latin squares of order n>10
(Message 4344)
Posted 1 Jan 2021 by Tomáš Brada Post: https://web.archive.org/web/20201216203209/https://boinc.tbrada.eu/forum_thread.php?id=3104&sort=5 |
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Diagonal Latin squares of order n>10
(Message 4339)
Posted 30 Nov 2020 by Tomáš Brada Post: I will get to it tomorrow. Hurray! |
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Server operating system
(Message 4331)
Posted 10 Nov 2020 by Tomáš Brada Post: The webserver will be moved to another computer. Also the database, but without the result and workunit data will be moved. Seduler will be shut down. Then I can reinstall properly the primary server. |
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Server operating system
(Message 4330)
Posted 30 Oct 2020 by Tomáš Brada Post: As we know, services running on this server gone quite popular. Besides BOINC, there are few other services that should remain online as much as possible. For operating system we use Arch linux for ARM (alarm), which is a rolling release distro. It is quite stable, but I have been neglecting the mailing list and release notes before updating. Updates happen almost every day and pile up if not applied timely. The kernel is also custom-compiled for this board. Now I'd like to move away from rolling release and use something more solid, like Debian. Debian comes as the most obvious choice, but I am still looking for better ones. For backups, we have solid backup plan, but not restore plan. If something goes wrong that requires restore from backup, it has to be manually unpacked and and the file system rebuilt. Maybe I could use two equivalent boards, one to actually run the services, while installing and testing on the other one. I do have a second mini-pc: raspberry pi 1B. But this one is too different from the more powerful Allwinner R40 based board. What I am going to do? Nuke the current system and hope to re-install the critical services in a short enough time? Move them to a laptop computer temporary and then move them back after reinstall? It's double the work. |
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Cafe :
Chemistry and Pyrotechnics
(Message 4327)
Posted 30 Oct 2020 by Tomáš Brada Post: 2010C: Abietic ... 5 Charcoal ... 2 NaClO3 ... 3 KClO3 ... 22.2§ Ethanol I am considering abandoning binding of the composition with the Abietic acid / ethanol, and instead adding small amount of Dextrin / water. The sticky rosin is unpleasant to work with and dries slowly. |
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Cafe :
Chemistry and Pyrotechnics
(Message 4326)
Posted 30 Oct 2020 by Tomáš Brada Post: 2010B: Abietic ... 4 Sulfur ... 1 NaClO3 ... 3.1 KClO3 ... 14.1 Ethanol. Burns poorly, the rest of the composition was repurposed for a flare. |
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Number crunching :
Badges
(Message 4316)
Posted 22 Oct 2020 by Tomáš Brada Post: Credit badges doesnt seem to work for me :( Not enough credit for first badge, dear. Level 9, over 37224 credits |
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Server Hardware
(Message 4311)
Posted 7 Oct 2020 by Tomáš Brada Post: New, much tidier, arrangement: Old arrangement |
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Cafe :
Chemistry and Pyrotechnics
(Message 4310)
Posted 7 Oct 2020 by Tomáš Brada Post: 2010A: Abietic ... 4 Charcoal ... 1 NaClO3 ... 4 KClO3 ... 13.9 Ethanol Burns well in powder form. |
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Server Hardware
(Message 4309)
Posted 5 Oct 2020 by Tomáš Brada Post: Computers. Zirkon is the backup workstation and parlon is raspberry for misc automation. |
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Symmetric Prime Tuples development
(Message 4307)
Posted 3 Oct 2020 by Tomáš Brada Post: A while back, vinn@[CNT] found a third SPT(17)! SPT(17): 1326033721182094741: 0 6 18 36 120 168 186 216 258 300 330 348 396 480 498 510 516 https://hr.tbrada.eu/tomas/spt_explore.php?id=95455176 See other rare tuples and their contributors here: https://hr.tbrada.eu/tomas/spt_explore.php?rare |
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Closed Issues :
Account/email addressess
(Message 4306)
Posted 30 Sep 2020 by Tomáš Brada Post: Dear Pete. Thank you very much for your letter. The email notification does not work here (see another open issue :), but if you run boinc manager, it should show up there. Looking up your new cpid at statseb shows all your 9M+ credits from this project. Also the exported stats show 854e560dad1c93c1f29a56d332f8cd60 having the correct credit. If there is something more I can do, please let me know. CPID is a hash function the email address, and we can't do anything about it changing when email is changed. Password can be changed freely, however. Thank you for your computational contribution, I honestly did not expect this to shoot up so much. I will always like to chat with my contributors. I am also working on a page to show the tuples found, here is one of yours for example. |
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Closed Issues :
Account/email addressess
(Message 4304)
Posted 24 Sep 2020 by Tomáš Brada Post: I am tempted to reset the credits back to zero for lack of thank you. |
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