Stockfish builds


31461Lalit Mohan Bankoti
2020-09-26 00:32:32
WCN,my prediction about tcec season 19 superfinal 54.5-45.5 in favour of stockfish.and what do you think?
31460WCN
2020-09-25 21:09:31
The A.R.B Chess System - 200 + Amazing Wins! By A.R.B :)

One of the Strangest A.R.B.C.S Wins! Ever!!!

https://groups.google.com/g/fishcooking/c/TOCNRUq8bWQ






WCN
31459WCN
2020-09-25 19:29:34
The A.R.B Chess System - 200 + Amazing Wins! By A.R.B :)

White 19 Move A.R.B.C.S Crush!

https://groups.google.com/g/fishcooking/c/TOCNRUq8bWQ






WCN
31458Mrert
2020-09-25 19:29:15
It's all speculation so take it with a grain of salt
31457hww
2020-09-25 18:59:55
lol
sad13 i surprise is something you not know
click on the king above the engine names
31456sad13
2020-09-25 18:43:20
>Except if they have a code to disable hyperthreading for K (using 88 physical cores instead of 176 hyperthreads) on the fly while running, I don't see any reason for that setting.


I see, seeing how 88 is half of 176 it seems as if they did that so

that komodo would get to use more processing power than if it was just 128 threads

with hyperthreading.

>For SF, maybe it's better to not use all the threads due to NNUE using more CPU instruction and CPU power, so leaving 4/176 free improves stability ?

They are afraid that stockfish will fry the tcec computer :P
They find it unfair that stockfish will use more electricity so
they decided to reduce the number of threads :P

Where in tcec can I see the threads used?
I still haven't found the spot.
31455Mrert
2020-09-25 17:39:34
@sad13: K is supposed to support up to 128 cores. 88 is the number of physical threads. Except if they have a code to disable hyperthreading for K (using 88 physical cores instead of 176 hyperthreads) on the fly while running, I don't see any reason for that setting.

For SF, maybe it's better to not use all the threads due to NNUE using more CPU instruction and CPU power, so leaving 4/176 free improves stability ?

All of this is just speculation
31454sad13
2020-09-25 14:04:47
>Fire and Ethereal have 176, SF 172 and K 88 threads

That could explain komodo's poor performance..

I guess komodo doesn't yet support more than 88 threads?

Why stockfish only 172 though?

Where in tcec can I see the threads used?
31453WCN
2020-09-25 10:18:00
31448 Lalit Mohan Bankoti
2020-09-24 21:44:14

32 Points! is 32 Points! regardless! :)


Stockfish Deep Tactics Version Destroys NN Chess Engines By A.R.B :)

Stockfish Deep Tactics Proof! :)

Stockfish now leading all the so called NN's ? with 32 Points! :)

https://groups.google.com/g/fishcooking/c/OAMtlZmZyaE




WCN
31452hww
2020-09-25 09:14:52
the misguided idea of embedding is not suited to frequent downloading of abrok binaries as you will wastefully download the same net again and again multiple times

repeatedly wasting storage and wasting bandwidth

the links of the nnue nets have been removed from the download page because of embedding

roman can fix this
31034 @roman set up poll so he know what we the users want

result has to be clear enough that he remove embedding from his exes here

please restore sanity to stockfish

Vote default net NOT embedded

https://www.strawpoll.me/20882042
31451Mrert
2020-09-25 07:05:29
Wait, what the hell are those thread settings ?
Fire and Ethereal have 176, SF 172 and K 88 threads
31450Mrert
2020-09-25 06:55:01
already 2.3... looks like the opening was busted
31449Mrert
2020-09-25 06:46:48
SF-K underway, let's see if SF's loss was due to a busted opening
31448Lalit Mohan Bankoti
2020-09-24 21:44:14
WCN,But stockfish team have to work hard on Sicilian all variation due to lost against komodo.otherwise stockfish was unbeatable in tcec season 19 premier division.
31447WCN
2020-09-24 19:27:16
The A.R.B Chess System - 200 + Amazing Wins! By A.R.B :)

Lost the Queen :( and the A.R.B.C.S Still Won! :)

https://groups.google.com/g/fishcooking/c/TOCNRUq8bWQ






WCN
31446Mrert
2020-09-24 19:25:05
Reposting here for people to see the relative speed of the compiles (on 1 thread, Kaby Lake notebook CPU (7xxx series)) using SF bench:

x64: 654 kN/s
ssse3: 806 kN/s -> 23% faster
modern: 816 kN/s -> 25% faster
AVX2: 940 kN/s -> 44% faster
bmi2: 989 kN/s -> 51% faster
31445WCN
2020-09-24 19:06:31
Stockfish Deep Tactics Version Destroys NN Chess Engines By A.R.B :)

Stockfish Deep Tactics Proof! :)

Stockfish now leading all the so called NN's ? with 32 Points! :)

https://groups.google.com/g/fishcooking/c/OAMtlZmZyaE





WCN
31444Peter
2020-09-24 13:24:10
I really LOVE this output:

/cfish-gcc-lto bench 4096 16 40 ~/MEGAsync/Schach/M30_Neg4+.epd depth nnue 2<&1|egrep -B1 -A5 'bestmove|Cfish'
Cfish 240920 64 POPCNT by Syzygy based on Stockfish

Position: 1/1
position fen 5n2/B3K3/2p2Np1/4k3/7P/3bN1P1/2Prn1P1/1q6 w - - 0 1

info string Hybrid NNUE evaluation using nn-03744f8d56d8.nnue enabled.
--
info depth 40 seldepth 60 multipv 1 score mate 30 nodes 6103468 nps 31299835 tbhits 0 time 195 pv e3g4 e5f5 g4h6 f5e5 h6f7 e5f5 f7d6 f5e5 f6g4 e5d5 g4e3 d5e5 d6f7 e5e4 f7g5 e4e5 g5f3 e5e4 f3d2 e4e5 d2f3 e5e4 f3g5 e4e5 g5f7 e5e4 f7d6 e4e5 e3g4 e5d5 g4f6 d5e5 d6f7 e5f5 f7h6 f5e5 h6g4 e5f5 g4e3 f5e5 f6g4 e5e4 g4f2 e4e5 f2d3 e5e4 d3f2 e4e5 f2g4 e5e4 g4f6 e4e5 e3c4 e5f5 c4d6 f5e5 f6g4 e5d5 c2c4
bestmove e3g4 ponder e5f5

===========================
Total time (ms) : 195
Nodes searched : 6105512
Nodes/second : 31310317

:-D
31443WCN
2020-09-23 20:11:45
The A.R.B Chess System - 200 + Amazing Wins! By A.R.B :)

A Beautiful A.R.B.C.S Black Win! :)

https://groups.google.com/g/fishcooking/c/TOCNRUq8bWQ






WCN
31442Mrert
2020-09-23 19:28:43
yes x64 uses sse2
31441abroke-WATCH!
2020-09-23 19:12:54
I just worked it out! :)

hww and sad13 are the same person doing multiple Posts! :(


How can we STOP! this nonsense!!! ?
31440Franky
2020-09-23 14:51:49
Thanks for your efforts Mrert, always answering everybody's questions...
31439GregC
2020-09-23 09:57:16
Many thanks! :)

Do you happen to know what level of SIMD the x64 code uses? I think it's SSE2, which has been around since the dinosaurs.
31438Mrert
2020-09-23 06:41:24
it would be interesting to know how much faster the most modern instruction set are (AVX512, vnni256, vnni512). But you need a very recent high end intel...

Actually x64 is not that slow compared to the first NNUE compiles where it was abysmal, several times slower than bmi2. They did a pretty good optimization job
31437Mrert
2020-09-23 06:37:53
Great idea actually.
Running SF12 with "bench 64 1 14 default depth NNUE" (1 thread, depth 14, use NNUE) 3 times per compile:

x64: 654 kN/s
ssse3: 806 kN/s -> 23% faster
modern: 816 kN/s -> 25% faster
AVX2: 940 kN/s -> 44% faster
bmi2: 989 kN/s -> 51% faster

Interesting. modern doesn't bring much more than ssse3, while leaps between other compiles are clear.

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