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Use NNUE complexity in search, retune related parameters

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This builds on ideas of xoto10 and mstembera to use more output from NNUE in the search algorithm.

passed STC:
https://tests.stockfishchess.org/tests/view/62ae454fe7ee5525ef88a957
LLR: 2.95 (-2.94,2.94) <0.00,2.50>
Total: 89208 W: 24127 L: 23753 D: 41328
Ptnml(0-2): 400, 9886, 23642, 10292, 384

passed LTC:
https://tests.stockfishchess.org/tests/view/62acc6ddd89eb6cf1e0750a1
LLR: 2.93 (-2.94,2.94) <0.50,3.00>
Total: 56352 W: 15430 L: 15115 D: 25807
Ptnml(0-2): 44, 5501, 16782, 5794, 55

closes https://github.com/official-stockfish/Stockfish/pull/4088

bench 5332964
This commit is contained in:
Dubslow
2022-06-10 08:11:02 -05:00
committed by Joost VandeVondele
parent 5304b561ab
commit 442c40b43d
5 changed files with 38 additions and 25 deletions
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4
src/nnue/evaluate_nnue.cpp
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@@ -143,7 +143,7 @@ namespace Stockfish::Eval::NNUE {
// overaligning stack variables with alignas() doesn't work correctly.
constexpr uint64_t alignment = CacheLineSize;
int delta = 10 - pos.non_pawn_material() / 1515;
int delta = 24 - pos.non_pawn_material() / 9560;
#if defined(ALIGNAS_ON_STACK_VARIABLES_BROKEN)
TransformedFeatureType transformedFeaturesUnaligned[
@@ -166,7 +166,7 @@ namespace Stockfish::Eval::NNUE {
// Give more value to positional evaluation when adjusted flag is set
if (adjusted)
return static_cast<Value>(((128 - delta) * psqt + (128 + delta) * positional) / (128 * OutputScale));
return static_cast<Value>(((1024 - delta) * psqt + (1024 + delta) * positional) / (1024 * OutputScale));
else
return static_cast<Value>((psqt + positional) / OutputScale);
}