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https://github.com/official-stockfish/Stockfish.git
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Carlos EsparzaandDisservin
e9997afb1c
Only calls to `evaluate()` now trigger NNUE accumulator updates. To make sure that we are likely to find parent positions from which to update the accumulators we perform a backwards NNUE update whenever we compute the accumulator from scratch for some position. passed STC LLR: 2.93 (-2.94,2.94) <0.00,2.00> Total: 39680 W: 10474 L: 10164 D: 19042 Ptnml(0-2): 171, 4068, 11042, 4398, 161 https://tests.stockfishchess.org/tests/view/67a27f26eb183d11c65945be passed LTC LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 337308 W: 86408 L: 85550 D: 165350 Ptnml(0-2): 276, 30551, 106126, 31441, 260 https://tests.stockfishchess.org/tests/view/67a287efeb183d11c65945ee then simplified: STC LLR: 2.94 (-2.94,2.94) <-1.75,0.25> Total: 28608 W: 7641 L: 7413 D: 13554 Ptnml(0-2): 132, 3036, 7744, 3256, 136 https://tests.stockfishchess.org/tests/view/67a4703719f522d3866d3345 LTC LLR: 2.96 (-2.94,2.94) <-1.75,0.25> Total: 200226 W: 51026 L: 50990 D: 98210 Ptnml(0-2): 170, 18468, 62799, 18508, 168 https://tests.stockfishchess.org/tests/view/67a4f255229c1a170cc08964 The version in this PR is a bit different from the simplified version, but it's compile-time changes only. closes https://github.com/official-stockfish/Stockfish/pull/5870 No functional change
62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/*
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Stockfish, a UCI chess playing engine derived from Glaurung 2.1
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Copyright (C) 2004-2025 The Stockfish developers (see AUTHORS file)
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Stockfish is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Stockfish is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef NNUE_MISC_H_INCLUDED
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#define NNUE_MISC_H_INCLUDED
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#include <cstddef>
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#include <string>
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#include "../types.h"
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#include "nnue_architecture.h"
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namespace Stockfish {
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class Position;
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namespace Eval::NNUE {
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struct EvalFile {
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// Default net name, will use one of the EvalFileDefaultName* macros defined
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// in evaluate.h
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std::string defaultName;
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// Selected net name, either via uci option or default
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std::string current;
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// Net description extracted from the net file
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std::string netDescription;
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};
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struct NnueEvalTrace {
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static_assert(LayerStacks == PSQTBuckets);
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Value psqt[LayerStacks];
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Value positional[LayerStacks];
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std::size_t correctBucket;
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};
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struct Networks;
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struct AccumulatorCaches;
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std::string trace(Position& pos, const Networks& networks, AccumulatorCaches& caches);
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} // namespace Stockfish::Eval::NNUE
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} // namespace Stockfish
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#endif // #ifndef NNUE_MISC_H_INCLUDED
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