Files
Stockfish/src/evaluate.h
Linmiao Xu 0b08953174 Re-evaluate some small net positions for more accurate evals
Use main net evals when small net evals hint that higher eval
accuracy may be worth the slower eval speeds. With Finny caches,
re-evals with the main net are less expensive than before.

Original idea by mstembera who I've added as co-author to this PR.

Based on reEval tests by mstembera:
https://tests.stockfishchess.org/tests/view/65e69187b6345c1b934866e5
https://tests.stockfishchess.org/tests/view/65e863aa0ec64f0526c3e991

A few variants of this patch also passed LTC:
https://tests.stockfishchess.org/tests/view/663d2108507ebe1c0e91f407
https://tests.stockfishchess.org/tests/view/663e388c3a2f9702074bc152

Passed STC:
https://tests.stockfishchess.org/tests/view/663dadbd1a61d6377f190e2c
LLR: 2.93 (-2.94,2.94) <0.00,2.00>
Total: 92320 W: 23941 L: 23531 D: 44848
Ptnml(0-2): 430, 10993, 22931, 11349, 457

Passed LTC:
https://tests.stockfishchess.org/tests/view/663ef48b2948bf9aa698690c
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 98934 W: 24907 L: 24457 D: 49570
Ptnml(0-2): 48, 10952, 27027, 11382, 58

closes https://github.com/official-stockfish/Stockfish/pull/5238

bench 1876282

Co-Authored-By: mstembera <5421953+mstembera@users.noreply.github.com>
2024-05-13 07:30:18 +02:00

58 lines
1.8 KiB
C++

/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2024 The Stockfish developers (see AUTHORS file)
Stockfish is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
Stockfish is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef EVALUATE_H_INCLUDED
#define EVALUATE_H_INCLUDED
#include <string>
#include "types.h"
namespace Stockfish {
class Position;
namespace Eval {
constexpr inline int SmallNetThreshold = 1174;
// The default net name MUST follow the format nn-[SHA256 first 12 digits].nnue
// for the build process (profile-build and fishtest) to work. Do not change the
// name of the macro or the location where this macro is defined, as it is used
// in the Makefile/Fishtest.
#define EvalFileDefaultNameBig "nn-ae6a388e4a1a.nnue"
#define EvalFileDefaultNameSmall "nn-baff1ede1f90.nnue"
namespace NNUE {
struct Networks;
struct AccumulatorCaches;
}
std::string trace(Position& pos, const Eval::NNUE::Networks& networks);
int simple_eval(const Position& pos, Color c);
Value evaluate(const NNUE::Networks& networks,
const Position& pos,
Eval::NNUE::AccumulatorCaches& caches,
int optimism);
} // namespace Eval
} // namespace Stockfish
#endif // #ifndef EVALUATE_H_INCLUDED