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Call TT.new_search() earlier.

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TT.new_search() was being called by mainThread in Thread::search(). However, mainThread is the last to start searching, and helper threads could reach a measured rootDepth 10 (on 64 cores) before mainThread increments the TT generation. Fixed by moving the call to MaintThread::search() before helper threads start searching.

No functional change.

Closes #1134
This commit is contained in:
Joost VandeVondele
2017-06-06 09:48:57 +02:00
committed by Joona Kiiski
parent 659990b43f
commit ebc563059c
1 changed files with 1 additions and 1 deletions
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src/search.cpp
+1 -1
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@@ -244,6 +244,7 @@ void MainThread::search() {
Color us = rootPos.side_to_move(); Color us = rootPos.side_to_move();
Time.init(Limits, us, rootPos.game_ply()); Time.init(Limits, us, rootPos.game_ply());
TT.new_search();
int contempt = Options["Contempt"] * PawnValueEg / 100; // From centipawns int contempt = Options["Contempt"] * PawnValueEg / 100; // From centipawns
DrawValue[ us] = VALUE_DRAW - Value(contempt); DrawValue[ us] = VALUE_DRAW - Value(contempt);
@@ -347,7 +348,6 @@ void Thread::search() {
EasyMove.clear(); EasyMove.clear();
mainThread->easyMovePlayed = mainThread->failedLow = false; mainThread->easyMovePlayed = mainThread->failedLow = false;
mainThread->bestMoveChanges = 0; mainThread->bestMoveChanges = 0;
TT.new_search();
} }
size_t multiPV = Options["MultiPV"]; size_t multiPV = Options["MultiPV"];