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Chess engine: Stockfish 20091707 and NNUE

on

Stockfish - UCI chess engine, compiled by Syzygy1
Rating JCER=3294

Timestamp: 1600356292
Use tiling to speed up accumulator refreshes and updates

Perform the update and refresh operations tile by tile in a local array of vectors. By selecting the array size carefully, we achieve that the compiler keeps the whole array in vector registers.
Idea and original implementation by @sf-x.

STC: https://tests.stockfishchess.org/tests/view/5f623eec912c15f19854b855
LLR: 2.94 (-2.94,2.94) {-0.25,1.25}
Total: 4872 W: 623 L: 477 D: 3772 Elo +10.41
Ptnml(0-2): 14, 350, 1585, 450, 37

LTC: https://tests.stockfishchess.org/tests/view/5f62434e912c15f19854b860
LLR: 2.94 (-2.94,2.94) {0.25,1.25}
Total: 25808 W: 1565 L: 1401 D: 22842 Elo +2.21
Ptnml(0-2): 23, 1186, 10332, 1330, 33

No functional change

Stockfish 20091707 and NNUE download

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