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King Psqt Tuning

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After a session of tuning for King Psqt I got some new values, which was later
tweaked manually by me Fauzi, to result in an Elo-gain patch which seems to scale
pretty well:

STC: LLR: -2.96 (-2.94,2.94) [0.00,4.00]
Total: 100653 W: 22550 L: 22314 D: 55789 [Yellow patch]

LTC: LLR: 2.96 (-2.94,2.94) [0.00,4.00]
Total: 147079 W: 25584 L: 24947 D: 96548 [Green Patch]

Bench: 4669050
This commit is contained in:
FauziAkram 2018-08-08 17:48:06 +02:00 • committed by Stéphane Nicolet
parent d96c1c32a2
commit c569cf263d
2 changed files with 18 additions and 15 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

16
src/psqt.cpp
View file

@ -87,14 +87,14 @@ constexpr Score Bonus[][RANK_NB][int(FILE_NB) / 2] = {
{ S(-1,-74), S(-4,-55), S(-1,-43), S( 0,-30) } { S(-1,-74), S(-4,-55), S(-1,-43), S( 0,-30) }
}, },
{ // King { // King
{ S(267, 0), S(320, 48), S(270, 75), S(195, 84) }, { S(272, 0), S(325, 41), S(273, 80), S(190, 93) },
{ S(264, 43), S(304, 92), S(238,143), S(180,132) }, { S(277, 57), S(305, 98), S(241,138), S(183,131) },
{ S(200, 83), S(245,138), S(176,167), S(110,165) }, { S(198, 86), S(253,138), S(168,165), S(120,173) },
{ S(177,106), S(185,169), S(148,169), S(110,179) }, { S(169,103), S(191,152), S(136,168), S(108,169) },
{ S(149,108), S(177,163), S(115,200), S( 66,203) }, { S(145, 98), S(176,166), S(112,197), S(69, 194) },
{ S(118, 95), S(159,155), S( 84,176), S( 41,174) }, { S(122, 87), S(159,164), S(85, 174), S(36, 189) },
{ S( 87, 50), S(128, 99), S( 63,122), S( 20,139) }, { S(87, 40), S(120, 99), S(64, 128), S(25, 141) },
{ S( 63, 9), S( 88, 55), S( 47, 80), S( 0, 90) } { S(64, 5), S(87, 60), S(49, 75), S(0, 75) }
} }
}; };

17
src/search.cpp
View file

@ -250,26 +250,29 @@ void MainThread::search() {
Value minScore = this->rootMoves[0].score; Value minScore = this->rootMoves[0].score;
// Find out minimum score and reset votes for moves which can be voted // Find out minimum score and reset votes for moves which can be voted
for (Thread* th: Threads){ for (Thread* th: Threads)
{
minScore = std::min(minScore, th->rootMoves[0].score); minScore = std::min(minScore, th->rootMoves[0].score);
votes[th->rootMoves[0].pv[0]] = 0; votes[th->rootMoves[0].pv[0]] = 0;
} }
// Vote according to score and depth // Vote according to score and depth
for (Thread* th : Threads) for (Thread* th : Threads)
votes[th->rootMoves[0].pv[0]] += int(th->rootMoves[0].score - minScore) + int(th->completedDepth); votes[th->rootMoves[0].pv[0]] += int(th->rootMoves[0].score - minScore)
+ int(th->completedDepth);
// Select best thread // Select best thread
int bestVote = votes[this->rootMoves[0].pv[0]]; int bestVote = votes[this->rootMoves[0].pv[0]];
for (Thread* th : Threads){ for (Thread* th : Threads)
if (votes[th->rootMoves[0].pv[0]] > bestVote){ {
bestVote = votes[th->rootMoves[0].pv[0]]; if (votes[th->rootMoves[0].pv[0]] > bestVote)
bestThread = th; {
bestVote = votes[th->rootMoves[0].pv[0]];
bestThread = th;
} }
} }
} }
previousScore = bestThread->rootMoves[0].score; previousScore = bestThread->rootMoves[0].score;
// Send again PV info if we have a new best thread // Send again PV info if we have a new best thread