Search found 3963 matches
- Tue Sep 06, 2016 10:01 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Baffling multithreading scaling behavior
- Replies: 41
- Views: 6231
Idea: Try a parallel perft()
Idea: Try a parallel perft() It's fairly simple to write a parallel perft() which splits only at the root and where the threads have minimal interaction and where the results are known beforehand and the order of calculation is irrelevant. This should produce a near linear speed-up; if not, at least...
- Sun Sep 04, 2016 9:30 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Two perft(7) mismatches from work unit 571
- Replies: 2
- Views: 877
Re: Two perft(7) mismatches from work unit 571
Thank you for your calculations.
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Symbolic has produced more than 56,100,000 perft(7) results so far, about 58.19% of the 96,400,068 needed.
Work units not yet started (390): 574-963
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Symbolic has produced more than 56,100,000 perft(7) results so far, about 58.19% of the 96,400,068 needed.
Work units not yet started (390): 574-963
- Sun Sep 04, 2016 5:00 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Perft(14) Weekly Status Reports for 2016
- Replies: 75
- Views: 17317
Perft(14) Weekly Status 2016-09-04
Perft(14) Weekly Status 2016-09-04 Symbolic has produced more than 56,100,000 perft(7) results so far, about 58.19% of the 96,400,068 needed. Day count: 760 Estimated remaining day count: 546 Estimated total day count: 1,306 Average throughput: 73,816 results/day Effective frequency: 238.06 GHz Work...
- Sun Sep 04, 2016 1:17 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Two perft(7) mismatches from work unit 571
- Replies: 2
- Views: 877
Two perft(7) mismatches from work unit 571
Two (adjacent) perft(7) mismatches from work unit 571: 31355,31356c31355,31356 < rnbqkb1r/1pppppp1/p4n1p/1B6/4P3/4Q3/PPPP1PPP/RNB1K1NR b KQkq - 3 4 30 18436657731 553099731930 < rnbqkb1r/1pppppp1/p4n1p/1B6/4PP2/5Q2/PPPP2PP/RNB1K1NR b KQkq - 2 4 30 15669028771 470070863130 --- > rnbqkb1r/1pppppp1/p4n...
- Sat Sep 03, 2016 7:39 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: One perft(7) mismatch for work unit 566
- Replies: 4
- Views: 927
Re: One perft(7) mismatch for work unit 566
Thanks to everyone for their verification work. The 128 bit signature program output is again replicated.
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Symbolic has produced more than 56,000,000 perft(7) results so far, about 58.09% of the 96,400,068 needed.
Work unit #573 is the next to be started.
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Symbolic has produced more than 56,000,000 perft(7) results so far, about 58.09% of the 96,400,068 needed.
Work unit #573 is the next to be started.
- Sat Sep 03, 2016 1:24 pm
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: One perft(7) mismatch for work unit 566
- Replies: 4
- Views: 927
One perft(7) mismatch for work unit 566
One perft(7) mismatch for work unit 566
Very close!
Very close!
Code: Select all
85465c85465
< rnbqkbnr/pp2pp1p/3p4/2p3BQ/3PP3/8/PPP2PPP/RN2KBNR b KQkq - 0 4 28 53830194040 1507245433120
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> rnbqkbnr/pp2pp1p/3p4/2p3BQ/3PP3/8/PPP2PPP/RN2KBNR b KQkq - 0 4 28 53830194113 1507245435164
- Thu Sep 01, 2016 10:52 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: One perft(7) mismatch for work unit 568
- Replies: 4
- Views: 1081
Re: One perft(7) mismatch for work unit 568
Sharper v0.17 by Albert Bertilsson setboard r1bqkbnr/ppppp2p/2n5/5pp1/1P6/B7/P1PPPPPP/RNQ1KBNR b KQkq - 0 4 perft 7 Nodes: 4466138745, Time: 7954 cs Thanks for your calculation. ---- Symbolic has produced more than 55,900,000 perft(7) results so far, about 57.99% of the 96,400,068 needed. The next ...
- Thu Sep 01, 2016 9:51 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: One perft(7) mismatch for work unit 568
- Replies: 4
- Views: 1081
Re: One perft(7) mismatch for work unit 568
Thanks. The 128 bit signature output is once again verified.
- Thu Sep 01, 2016 6:47 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: One perft(7) mismatch for work unit 568
- Replies: 4
- Views: 1081
One perft(7) mismatch for work unit 568
One perft(7) mismatch for work unit 568
Code: Select all
80801c80801
< r1bqkbnr/ppppp2p/2n5/5pp1/1P6/B7/P1PPPPPP/RNQ1KBNR b KQkq - 0 4 30 4466139808 133984194240
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> r1bqkbnr/ppppp2p/2n5/5pp1/1P6/B7/P1PPPPPP/RNQ1KBNR b KQkq - 0 4 30 4466138745 133984162350
- Thu Sep 01, 2016 1:13 am
- Forum: Computer Chess Club: Programming and Technical Discussions
- Topic: Perft(14) Weekly Status Reports for 2016
- Replies: 75
- Views: 17317
Re: Castling does not reset the half move counter
I suppose that detecting and recording those metrics could help debug a chess program. But otherwise they won't help much with move selection, so if they're included in a program, then they should be conditionally compiled so as to not slow the program during regular play. ---- For those wanting to ...