jirayu_sri/stockfish
1
0
Fork 0
mirror of https://github.com/official-stockfish/Stockfish.git synced 2026-07-22 12:47:08 +00:00
Code Issues Packages Projects Releases Wiki Activity

Stack allocate NNUE buffer

Browse Source 
Passed simp STC

LLR: 2.94 (-2.94,2.94) <-1.75,0.25>
Total: 29632 W: 7772 L: 7552 D: 14308
Ptnml(0-2): 76, 3155, 8147, 3349,

Id expect there to be a small speedup (bc the compiler can skip some
stores) but i haven’t tried to measure it

closes https://github.com/official-stockfish/Stockfish/pull/6688

No functional change
This commit is contained in:
anematode
2026-04-02 20:30:44 +02:00
committed by Disservin
parent 7926f16ea7
commit 347fcaa392
3 changed files with 7 additions and 16 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/nnue/nnue_architecture.h
+2 -9
View File
@@ -109,17 +109,10 @@ struct NetworkArchitecture {
alignas(CacheLineSize) typename decltype(ac_1)::OutputBuffer ac_1_out;
alignas(CacheLineSize) typename decltype(fc_2)::OutputBuffer fc_2_out;
Buffer() { std::memset(this, 0, sizeof(*this)); }
Buffer() { std::memset(ac_sqr_0_out, 0, sizeof(ac_sqr_0_out)); }
};
#if defined(__clang__) && (__APPLE__)
// workaround for a bug reported with xcode 12
static thread_local auto tlsBuffer = std::make_unique<Buffer>();
// Access TLS only once, cache result.
Buffer& buffer = *tlsBuffer;
#else
alignas(CacheLineSize) static thread_local Buffer buffer;
#endif
Buffer buffer;
fc_0.propagate(transformedFeatures, buffer.fc_0_out);
ac_sqr_0.propagate(buffer.fc_0_out, buffer.ac_sqr_0_out);
src/search.cpp
+2 -4
View File
@@ -2035,8 +2035,7 @@ void syzygy_extend_pv(const OptionsMap& options,
for (const auto& m : MoveList<LEGAL>(pos))
legalMoves.emplace_back(m);
TB::Config config =
TB::rank_root_moves(options, pos, legalMoves, false, time_abort);
TB::Config config = TB::rank_root_moves(options, pos, legalMoves, false, time_abort);
RootMove& rm = *std::find(legalMoves.begin(), legalMoves.end(), pvMove);
if (legalMoves[0].tbRank != rm.tbRank)
@@ -2096,8 +2095,7 @@ void syzygy_extend_pv(const OptionsMap& options,
[](const Search::RootMove& a, const Search::RootMove& b) { return a.tbRank > b.tbRank; });
// The winning side tries to minimize DTZ, the losing side maximizes it
TB::Config config =
TB::rank_root_moves(options, pos, legalMoves, true, time_abort);
TB::Config config = TB::rank_root_moves(options, pos, legalMoves, true, time_abort);
// If DTZ is not available we might not find a mate, so we bail out
if (!config.rootInTB || config.cardinality > 0)