Search found 320 matches

by Joost Buijs
Sat May 23, 2020 19:30
Forum: Draughts, Computer, Internet
Topic: Flits self-learning mode
Replies: 82
Views: 2044

Re: Flits self-learning mode

If someone sends me a tool (binary or source) then I think permission is implied. So if that tool can parse a file of positions into a table of features and do gradient descent on it to get a bunch of feature weights, I would certainly use it to see what comes out of it. Using the source to reverse...
by Joost Buijs
Tue Apr 07, 2020 09:09
Forum: Draughts, Computer, Internet
Topic: Perft
Replies: 251
Views: 112248

Re: Perft

Perft is addictive. With the same processor the Intel Core i7-8700K, and frequency 4.5 GHZ, another test. This time the perft for the initial position has really improved, others almost the same. I forgot that I have a switch in my program to disable updating hash etc. when running perft, so I rera...
by Joost Buijs
Sat Apr 04, 2020 18:28
Forum: Draughts, Computer, Internet
Topic: Perft
Replies: 251
Views: 112248

Re: Perft

It was not my intention to post here anymore, but your perft numbers are amazing and you clearly beat the old perft numbers I've got back in 2017 with my move generator based on magics. I just ran perft() on my old Broadwell i7-6950X at 4.4 GHz. At the second position I'm still a little bit better, ...
by Joost Buijs
Sun Mar 26, 2017 09:00
Forum: Draughts, Computer, Internet
Topic: AMD Ryzen
Replies: 21
Views: 9829

Re: AMD Ryzen

Rumors indicate that also a 16-core Ryzen is in the works :) Bert Indeed! There are also rumors that AMD will add 4 way interleaved memory to Ryzen to make it competitive with Intel HEDP. However one of the lead developers of Ryzen says that there are no intentions to add 4 way memory, so I don't k...
by Joost Buijs
Thu Mar 23, 2017 07:58
Forum: Draughts, Computer, Internet
Topic: Search Algorithm
Replies: 711
Views: 212964

Re: Search Algorithm

Bert, Right now both my machines (8 and 10 core) are busy producing a huge number of games of considerable depth, if you wish I can run your experiment at a larger depth when this job is finished. As an alternative I am willing to give you a remote login to my 8 core machine (which is on a separate ...
by Joost Buijs
Thu Mar 09, 2017 06:47
Forum: Draughts, Computer, Internet
Topic: AMD Ryzen
Replies: 21
Views: 9829

Re: AMD Ryzen

First Ryzen, now Napels. Who needs 32 cores :D ? Bert Not my cup of tea, for the things I'm typically doing a few fast cores are usually better than many slow cores. I hope that the renewed competition of AMD forces Intel to do something about these weird prices, a top of the line workstation would...
by Joost Buijs
Wed Mar 08, 2017 15:39
Forum: Draughts, Computer, Internet
Topic: English Checkers
Replies: 5
Views: 3550

Re: English Checkers

You can't convert a program from 32 to 64 bit when you don't have the source code, converting a binary program is virtually impossible. Checkerboard needs the engine to be a DLL, this complicates things even more, the engine you are talking about has it's own GUI and it seems it also needs the engi...
by Joost Buijs
Tue Mar 07, 2017 14:03
Forum: Draughts, Computer, Internet
Topic: English Checkers
Replies: 5
Views: 3550

Re: English Checkers

I have a request for people who know how to program. I have a certain engine checkers English 32 bit along with the base ends. I'd like to convert to 64-bit with the base ends, so to use engine under the program CheckerBoard. The person who will do it heartily thank you. The file with the base endi...
by Joost Buijs
Sun Mar 05, 2017 16:17
Forum: Draughts, Computer, Internet
Topic: ENGINE SPEED AND STRONG
Replies: 217
Views: 55726

Re: ENGINE SPEED AND STRONG

To avoid any further dreadful conflicts I changed the pattern evaluation to use 6x4 patterns combined with 4x6 patterns, 5x5 patterns cannot overlap equally or I have to let them overlap for 4 fields which seems overkill and I don't like the fact that they not always contain the same number of bits...
by Joost Buijs
Sun Mar 05, 2017 13:21
Forum: Draughts, Computer, Internet
Topic: ENGINE SPEED AND STRONG
Replies: 217
Views: 55726

Re: ENGINE SPEED AND STRONG

To avoid any further dreadful conflicts I changed the pattern evaluation to use 6x4 patterns combined with 4x6 patterns, 5x5 patterns cannot overlap equally or I have to let them overlap for 4 fields which seems overkill and I don't like the fact that they not always contain the same number of bits,...
by Joost Buijs
Fri Mar 03, 2017 07:46
Forum: Draughts, Computer, Internet
Topic: AMD Ryzen
Replies: 21
Views: 9829

Re: AMD Ryzen

Based upon the first benchmarks 8-core processors, for acceptable prices, and with an interesting performance, become realistic. And the call them AMD Ryzen.... Bert Indeed, they come very close to the 6850K and 6900K processors, still with a lower IPC, but AMD compensates for that with a higher cl...
by Joost Buijs
Sun Feb 26, 2017 19:49
Forum: Draughts, Computer, Internet
Topic: ENGINE SPEED AND STRONG
Replies: 217
Views: 55726

Re: ENGINE SPEED AND STRONG

Haha, than I think we have a different opinion, without coding your data won't go anywhere, remove the search from your program and you will see how good it plays. Program = code + data. If the data isn't yours, how can the program be? I own both Scan's code and data, so I can call it "my program"....
by Joost Buijs
Sun Feb 26, 2017 19:26
Forum: Draughts, Computer, Internet
Topic: ENGINE SPEED AND STRONG
Replies: 217
Views: 55726

Re: ENGINE SPEED AND STRONG

Really I don't know what you mean, every line of code is original and written by me. Code is slowly becoming obsolete. This is the ML era; data is everything. Replace my data with zeroes (AAAA with your encoding), and you can claim authorship. Not before. Haha, than I think we have a different opin...
by Joost Buijs
Sun Feb 26, 2017 19:13
Forum: Draughts, Computer, Internet
Topic: ENGINE SPEED AND STRONG
Replies: 217
Views: 55726

Re: ENGINE SPEED AND STRONG

And draughts seems to be very insensitive to calculation depth (unfortunately), yesterday I ran a match between two versions of my program, one being on hardware 20 times faster as the other, the fast version won the match but not by a very great margin, not what you would normally expect with such...
by Joost Buijs
Sun Feb 26, 2017 19:06
Forum: Draughts, Computer, Internet
Topic: ENGINE SPEED AND STRONG
Replies: 217
Views: 55726

Re: ENGINE SPEED AND STRONG

And draughts seems to be very insensitive to calculation depth (unfortunately), yesterday I ran a match between two versions of my program, one being on hardware 20 times faster as the other, the fast version won the match but not by a very great margin, not what you would normally expect with such...