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Increase reductions with the number of threads

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Passed STC with 8 threads:
LLR: 2.92 (-2.94,2.94) {-0.25,1.25}
Total: 13520 W: 1135 L: 1012 D: 11373
Ptnml(0-2): 39, 815, 4929, 938, 39
https://tests.stockfishchess.org/tests/view/5f68e274ded68c240be73f41

Passed LTC with 8 threads:
LLR: 2.96 (-2.94,2.94) {0.25,1.25}
Total: 48384 W: 2183 L: 1994 D: 44207
Ptnml(0-2): 28, 1777, 20402, 1948, 37
https://tests.stockfishchess.org/tests/view/5f68f068ded68c240be747e9

closes https://github.com/official-stockfish/Stockfish/pull/3142

No functional change (for one thread)
This commit is contained in:
Stéphane Nicolet 2020-09-22 22:43:41 +02:00
parent 9a64e737cf
commit 3d5b2c8a51
1 changed files with 1 additions and 1 deletions
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2
src/search.cpp
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@ -192,7 +192,7 @@ namespace {
void Search::init() {
for (int i = 1; i < MAX_MOVES; ++i)
Reductions[i] = int((22.0 + std::log(Threads.size())) * std::log(i));
Reductions[i] = int((22.0 + 2 * std::log(Threads.size())) * std::log(i));
}