Stockfish 15 is ready

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mehmet123
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Joined: Sun Jan 26, 2020 10:38 pm
Location: Turkey
Full name: Mehmet Karaman

Stockfish 15 is ready

Post by mehmet123 »

Stockfish 15 was published about 6 months after the release of Stockfish 14.1
https://abrok.eu/stockfish/

Regression tests shows 36.69 elo progress at 60 sec +0.6 sec tc / 1 core/ 8 moves v3.pgn and 26.09 elo progress at 30 sec +0.3 sec tc / 8 cores/8 moves v3.pgn
https://github.com/glinscott/fishtest/w ... sion-Tests.
Andrew
Posts: 231
Joined: Thu Mar 09, 2006 12:51 am
Location: Australia

Re: Stockfish 15 is ready

Post by Andrew »

Have they fixed the search explosion problem that has been mentioned here a number of times?

Andrew
bnst
Posts: 87
Joined: Tue Sep 11, 2007 12:16 pm

Re: Stockfish 15 is ready

Post by bnst »

Andrew wrote: Tue Apr 19, 2022 10:33 am Have they fixed the search explosion problem that has been mentioned here a number of times?

Andrew
I reported such a problem with position:
r3r1k1/2qb1pp1/pp2n1np/2p1P3/2R1N3/1B3N1P/PP1Q1PP1/4R1K1 w - - bm Nf6+;
Stockfish 15 at least behaves nicely on this one.

Regards
anst
Andrew
Posts: 231
Joined: Thu Mar 09, 2006 12:51 am
Location: Australia

Re: Stockfish 15 is ready

Post by Andrew »

Thanks Anst, I'll search for some of the other reported positions in the next few days and see how they go.

Andrew
Modern Times
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Joined: Thu Jun 07, 2012 11:02 pm

Re: Stockfish 15 is ready

Post by Modern Times »

mehmet123 wrote: Tue Apr 19, 2022 4:18 am
Regression tests shows 36.69 elo progress at 60 sec +0.6 sec tc / 1 core/ 8 moves v3.pgn and 26.09 elo progress at 30 sec +0.3 sec tc / 8 cores/8 moves v3.pgn
https://github.com/glinscott/fishtest/w ... sion-Tests.
What do they measure those gains with - Ordo or Bayeselo ?
mehmet123
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Joined: Sun Jan 26, 2020 10:38 pm
Location: Turkey
Full name: Mehmet Karaman

Re: Stockfish 15 is ready

Post by mehmet123 »

Modern Times wrote: Tue Apr 19, 2022 10:04 pm What do they measure those gains with - Ordo or Bayeselo ?
Stockfish Team use Bayeselo for elo measure.
Modern Times
Posts: 3602
Joined: Thu Jun 07, 2012 11:02 pm

Re: Stockfish 15 is ready

Post by Modern Times »

mehmet123 wrote: Tue Apr 19, 2022 10:26 pm Stockfish Team use Bayeselo for elo measure.
Thanks, happy to hear that. So the ratings lists that use Ordo will be showing gains of more than the +37 Elo stated, depending on test conditions.
Jouni
Posts: 3428
Joined: Wed Mar 08, 2006 8:15 pm

Re: Stockfish 15 is ready

Post by Jouni »

Stockfish speed is going down steadily. 6 core bench i5:

SF14 14,4 Mnps
SF14.1 13,1 Mnps
SF15 11,0 Mnps

I really miss classic or asmfish :) .
Jouni
Modern Times
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Joined: Thu Jun 07, 2012 11:02 pm

Re: Stockfish 15 is ready

Post by Modern Times »

Jouni wrote: Wed Apr 20, 2022 8:03 am Stockfish speed is going down steadily. 6 core bench i5:

SF14 14,4 Mnps
SF14.1 13,1 Mnps
SF15 11,0 Mnps

I really miss classic or asmfish :) .
I'm not seeing that slowdown with SF15 here, not on the standard bench command anyway (1 thread). Just a tiny bit slower than 14.1, maybe 1-2%, if at all.
Modern Times
Posts: 3602
Joined: Thu Jun 07, 2012 11:02 pm

Re: Stockfish 15 is ready

Post by Modern Times »

Well it varies a bit between runs, on 12 threads here:

14.1 - 26.7 Mnps
15 - 25.6 Mnps

So 4-5%