Start a TT resize only after search finished.

[stockfish] / src / thread.cpp

diff --git a/src/thread.cpp b/src/thread.cpp
index 7fec4724dc10d6d4d9063ab60eda41c4cca75a3a..f88e359b0373436db1f6c445f72f4b04448667e7 100644 (file)
--- a/src/thread.cpp
+++ b/src/thread.cpp
@@ -2,7 +2,7 @@
   Stockfish, a UCI chess playing engine derived from Glaurung 2.1
   Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
   Copyright (C) 2008-2015 Marco Costalba, Joona Kiiski, Tord Romstad
-  Copyright (C) 2015-2018 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
+  Copyright (C) 2015-2019 Marco Costalba, Joona Kiiski, Gary Linscott, Tord Romstad
 
   Stockfish is free software: you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
@@ -26,6 +26,7 @@
 #include "thread.h"
 #include "uci.h"
 #include "syzygy/tbprobe.h"
+#include "tt.h"
 
 ThreadPool Threads; // Global object
 
@@ -60,11 +61,11 @@ void Thread::clear() {
   mainHistory.fill(0);
   captureHistory.fill(0);
 
-  for (auto& to : contHistory)
+  for (auto& to : continuationHistory)
       for (auto& h : to)
-          h.get()->fill(0);
+          h->fill(0);
 
-  contHistory[NO_PIECE][0].get()->fill(Search::CounterMovePruneThreshold - 1);
+  continuationHistory[NO_PIECE][0]->fill(Search::CounterMovePruneThreshold - 1);
 }
 
 /// Thread::start_searching() wakes up the thread that will start the search
@@ -97,7 +98,7 @@ void Thread::idle_loop() {
   // some Windows NUMA hardware, for instance in fishtest. To make it simple,
   // just check if running threads are below a threshold, in this case all this
   // NUMA machinery is not needed.
-  if (Options["Threads"] >= 8)
+  if (Options["Threads"] > 8)
       WinProcGroup::bindThisThread(idx);
 
   while (true)
@@ -117,7 +118,7 @@ void Thread::idle_loop() {
 }
 
 /// ThreadPool::set() creates/destroys threads to match the requested number.
-/// Created and launched threads wil go immediately to sleep in idle_loop.
+/// Created and launched threads will immediately go to sleep in idle_loop.
 /// Upon resizing, threads are recreated to allow for binding if necessary.
 
 void ThreadPool::set(size_t requested) {
@@ -135,6 +136,9 @@ void ThreadPool::set(size_t requested) {
       while (size() < requested)
           push_back(new Thread(size()));
       clear();
+
+      // Reallocate the hash with the new threadpool size
+      TT.resize(Options["Hash"]);
   }
 }
 
@@ -187,7 +191,7 @@ void ThreadPool::start_thinking(Position& pos, StateListPtr& states,
 
   for (Thread* th : *this)
   {
-      th->nodes = th->tbHits = th->nmp_ply = th->nmp_odd = 0;
+      th->nodes = th->tbHits = th->nmpMinPly = 0;
       th->rootDepth = th->completedDepth = DEPTH_ZERO;
       th->rootMoves = rootMoves;
       th->rootPos.set(pos.fen(), pos.is_chess960(), &setupStates->back(), th);