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Pack all the zobrist keys into a 512b vector and use vectorized updates#403

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TheRealGioviok merged 5 commits into
official-clockwork:mainfrom
TheRealGioviok:zobrist_speedup
May 25, 2026
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Pack all the zobrist keys into a 512b vector and use vectorized updates#403
TheRealGioviok merged 5 commits into
official-clockwork:mainfrom
TheRealGioviok:zobrist_speedup

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@TheRealGioviok
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Test  | zobrist_speedup
Elo   | 4.20 +- 2.78 (95%)
SPRT  | 4.0+0.04s Threads=1 Hash=16MB
LLR   | 2.95 (-2.94, 2.94) [0.00, 3.00]
Games | N: 21746 W: 6168 L: 5905 D: 9673
Penta | [362, 2351, 5207, 2568, 385]

https://ob.cwchess.org/test/1451/

Bench: 15108078

Bench: 15108078
Bench: 15108078
@Aethdv
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Aethdv commented May 25, 2026

lgtm.

@TheRealGioviok TheRealGioviok merged commit ccf83d5 into official-clockwork:main May 25, 2026
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3 participants