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Code Issues Releases Wiki Activity

Lower smallnet threshold linearly as pawn count decreases

Browse source 
Passed STC:
https://tests.stockfishchess.org/tests/view/6644f677324e96f42f89d894
LLR: 2.94 (-2.94,2.94) <0.00,2.00>
Total: 377920 W: 97135 L: 96322 D: 184463
Ptnml(0-2): 1044, 44259, 97588, 44978, 1091

Passed LTC:
https://tests.stockfishchess.org/tests/view/664548af93ce6da3e93b31b3
LLR: 2.94 (-2.94,2.94) <0.50,2.50>
Total: 169056 W: 42901 L: 42312 D: 83843
Ptnml(0-2): 58, 18538, 46753, 19115, 64

closes https://github.com/official-stockfish/Stockfish/pull/5252

Bench: 1991750
This commit is contained in:
Linmiao Xu 2024-05-15 13:22:46 -04:00 • committed by Disservin
parent e3c9ed77aa
commit 47597641dc
3 changed files with 3 additions and 3 deletions
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2
src/evaluate.cpp
View file

@ -55,7 +55,7 @@ Value Eval::evaluate(const Eval::NNUE::Networks& networks,
assert(!pos.checkers());
int simpleEval = simple_eval(pos, pos.side_to_move());
bool smallNet = std::abs(simpleEval) > SmallNetThreshold;
bool smallNet = std::abs(simpleEval) > SmallNetThreshold + 6 * pos.count<PAWN>();
int nnueComplexity;
int v;

2
src/evaluate.h
View file

@ -29,7 +29,7 @@ class Position;
namespace Eval {
constexpr inline int SmallNetThreshold = 1174;
constexpr inline int SmallNetThreshold = 1126;
// 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

2
src/nnue/nnue_misc.cpp
View file

@ -47,7 +47,7 @@ void hint_common_parent_position(const Position& pos,
AccumulatorCaches& caches) {
int simpleEvalAbs = std::abs(simple_eval(pos, pos.side_to_move()));
if (simpleEvalAbs > Eval::SmallNetThreshold)
if (simpleEvalAbs > Eval::SmallNetThreshold + 6 * pos.count<PAWN>())
networks.small.hint_common_access(pos, &caches.small);
else
networks.big.hint_common_access(pos, &caches.big);