Search found 73 matches

by mkchan
Sat Jan 05, 2019 6:23 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Open MP chess SMP study
Replies: 1
Views: 270

Re: Open MP chess SMP study

I think this is the first project I have looked over that used Open MP to do the SMP for a chess search study: https://github.com/hennimohammed/parallel_chess_engine I had done it myself for perft but it didn't seem to scale as well as making a thread pool myself and doing it. I had figured there w...
by mkchan
Tue Oct 02, 2018 4:54 am
Forum: Computer Chess Club: General Topics
Topic: A very simple engine in C/C++ using bitboards?
Replies: 10
Views: 1718

Re: A very simple engine in C/C++ using bitboards?

Check out Teki:

https://github.com/Mk-Chan/Teki

It uses the classical bitboard approach (non-magic/rotated).
by mkchan
Mon Aug 20, 2018 4:48 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: 70th Amateur Series Division 5
Replies: 13
Views: 1125

Re: 70th Amateur Series Division 5

Congratulations to Alberto Alonso Ruibal (Carballo). :) The support for this broadcast was disappointing. I'd hoped to see more of the engine authors visiting. I'm sure that Ratosh (Pirarucu author) must have felt lonely at times. Hey Graham, sorry to hear about the poor turnout of authors (includi...
by mkchan
Wed Aug 08, 2018 3:13 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Lazy SMP and 44 cores
Replies: 21
Views: 3098

Re: Lazy SMP and 44 cores

At the moment my chessengine participates in the TCEC tournament which uses a machine that has 44(!) cores. I was wondering what would be the best approach on how to use these cores effectively using lazy SMP. At the moment half of the threads search the actual depth and the other half searches at ...
by mkchan
Sat Jul 14, 2018 6:47 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI Pondering workaround
Replies: 10
Views: 1386

Re: UCI Pondering workaround

furthermore, if the answer is no, I will do what I want and break the UCI spec. Great idea if you want to infuriate testers because effectively, your engine will be stealing computing power from your opponent during his thinking time. In CCRL, pondering is off because both engines run on the same m...
by mkchan
Fri Jul 13, 2018 4:31 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: UCI Pondering workaround
Replies: 10
Views: 1386

Re: UCI Pondering workaround

I'm trying to implement pondering, without having to deal with all of the ponderhit, send bestmove on stop, ... bs that is baked into the UCI spec. Here is a sample that I would like to follow --> position startpos --> go wtime 10000 btime 10000 <-- info depth 1 ... <-- .... <-- bestmove e2e4 // NO...
by mkchan
Fri Jul 06, 2018 4:59 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Teki 2 64-bit Gauntlet for CCRL 40/40
Replies: 1
Views: 378

Re: Teki 2 64-bit Gauntlet for CCRL 40/40

https://s33.postimg.cc/6l2x3uhf3/Teki2-4040.png Games: PGN Test setup: details CCRL 40/40 Rating List - Custom engine selection 857095 games played by 2205 programs, run by 21 testers Ponder off, General books (up to 12 moves), 3-4-5 piece EGTB Time control: Equivalent to 40 moves in 40 minutes on ...
by mkchan
Fri Jun 22, 2018 1:30 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Building NN-powered engine
Replies: 19
Views: 3494

Re: Building NN-powered engine

One approach would be to use a traditional searcher and a NN for the evaluation function. This won't be high performance since the NN will have to be evaluated frequently at runtime. But it would suffice for an 1800 level engine. I will caution though as others have said here that building even a m...
by mkchan
Sat Apr 07, 2018 10:46 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: CCRL 40/40, 40/4 and FRC lists updated (5th April 2018)
Replies: 3
Views: 699

Re: CCRL 40/40, 40/4 and FRC lists updated (5th April 2018)

Hi Graham, any plans to test Teki 2 for 4CPU and FRC? I think Ray was playing out some FRC games.
by mkchan
Mon Apr 02, 2018 3:22 am
Forum: Computer Chess Club: General Topics
Topic: Teki 2 released
Replies: 10
Views: 1620

Re: Teki 2 released

I can't seem to reproduce it with just the FEN. Do you have the logs by any chance?