X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;ds=inline;f=src%2Ftimeman.cpp;h=8d2bacca3c10c4d20e73c8f59ddaaf0be85fe12c;hb=408e6ee9b646ed8ce230c75a3cc021a5a4979c72;hp=c3d27dee1cee449d62865d8c62212027b8c144ac;hpb=cf0295f1ad2902badeaf9ccf6cb433314465595c;p=stockfish
diff --git a/src/timeman.cpp b/src/timeman.cpp
index c3d27dee..8d2bacca 100644
--- a/src/timeman.cpp
+++ b/src/timeman.cpp
@@ -1,7 +1,7 @@
/*
Stockfish, a UCI chess playing engine derived from Glaurung 2.1
Copyright (C) 2004-2008 Tord Romstad (Glaurung author)
- Copyright (C) 2008-2010 Marco Costalba, Joona Kiiski, Tord Romstad
+ Copyright (C) 2008-2013 Marco Costalba, Joona Kiiski, 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
@@ -17,26 +17,19 @@
along with this program. If not, see .
*/
-
-////
-//// Includes
-////
-
#include
+#include
-#include "misc.h"
+#include "search.h"
+#include "timeman.h"
#include "ucioption.h"
-////
-//// Local definitions
-////
-
namespace {
/// Constants
const int MoveHorizon = 50; // Plan time management at most this many moves ahead
- const float MaxRatio = 3.0f; // When in trouble, we can step over reserved time with this ratio
+ const float MaxRatio = 7.0f; // When in trouble, we can step over reserved time with this ratio
const float StealRatio = 0.33f; // However we must not steal time from remaining moves over this ratio
@@ -71,82 +64,91 @@ namespace {
4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2,
2, 1, 1, 1, 1, 1, 1, 1 };
- int move_importance(int ply) { return MoveImportance[Min(ply, 511)]; }
+ int move_importance(int ply) { return MoveImportance[std::min(ply, 511)]; }
/// Function Prototypes
- enum TimeType { MaxTime, AbsTime };
+ enum TimeType { OptimumTime, MaxTime };
template
- int remaining(int myTime, int movesToGo, int currentPly);
+ int remaining(int myTime, int movesToGo, int fullMoveNumber, int slowMover);
}
-////
-//// Functions
-////
+void TimeManager::pv_instability(int curChanges, int prevChanges) {
+
+ unstablePVExtraTime = curChanges * (optimumSearchTime / 2)
+ + prevChanges * (optimumSearchTime / 3);
+}
+
-void get_search_times(int myTime, int myInc, int movesToGo, int currentPly,
- int* maxSearchTime, int* absoluteMaxSearchTime)
+void TimeManager::init(const Search::LimitsType& limits, int currentPly, Color us)
{
/* We support four different kind of time controls:
- Inc == 0 && movesToGo == 0 means: x basetime [sudden death!]
- Inc == 0 && movesToGo != 0 means: (x moves) / (y minutes)
- Inc > 0 && movesToGo == 0 means: x basetime + z inc.
- Inc > 0 && movesToGo != 0 means: (x moves) / (y minutes) + z inc
+ increment == 0 && movesToGo == 0 means: x basetime [sudden death!]
+ increment == 0 && movesToGo != 0 means: x moves in y minutes
+ increment > 0 && movesToGo == 0 means: x basetime + z increment
+ increment > 0 && movesToGo != 0 means: x moves in y minutes + z increment
Time management is adjusted by following UCI parameters:
- emergencyMoveHorizon :Be prepared to always play at least this many moves
- emergencyBaseTime :Always attempt to keep at least this much time (in ms) at clock
- emergencyMoveTime :Plus attempt to keep at least this much time for each remaining emergency move
- minThinkingTime :No matter what, use at least this much thinking before doing the move
+ emergencyMoveHorizon: Be prepared to always play at least this many moves
+ emergencyBaseTime : Always attempt to keep at least this much time (in ms) at clock
+ emergencyMoveTime : Plus attempt to keep at least this much time for each remaining emergency move
+ minThinkingTime : No matter what, use at least this much thinking before doing the move
*/
- int hypMTG, hypMyTime, mTime, aTime;
+ int hypMTG, hypMyTime, t1, t2;
// Read uci parameters
- int emergencyMoveHorizon = get_option_value_int("Emergency Move Horizon");
- int emergencyBaseTime = get_option_value_int("Emergency Base Time");
- int emergencyMoveTime = get_option_value_int("Emergency Move Time");
- int minThinkingTime = get_option_value_int("Minimum Thinking Time");
+ int emergencyMoveHorizon = Options["Emergency Move Horizon"];
+ int emergencyBaseTime = Options["Emergency Base Time"];
+ int emergencyMoveTime = Options["Emergency Move Time"];
+ int minThinkingTime = Options["Minimum Thinking Time"];
+ int slowMover = Options["Slow Mover"];
- // Initialize variables to maximum values
- *maxSearchTime = *absoluteMaxSearchTime = myTime;
+ // Initialize to maximum values but unstablePVExtraTime that is reset
+ unstablePVExtraTime = 0;
+ optimumSearchTime = maximumSearchTime = limits.time[us];
// We calculate optimum time usage for different hypothetic "moves to go"-values and choose the
// minimum of calculated search time values. Usually the greatest hypMTG gives the minimum values.
- for (hypMTG = 1; hypMTG <= (movesToGo ? Min(movesToGo, MoveHorizon) : MoveHorizon); hypMTG++)
+ for (hypMTG = 1; hypMTG <= (limits.movestogo ? std::min(limits.movestogo, MoveHorizon) : MoveHorizon); hypMTG++)
{
// Calculate thinking time for hypothetic "moves to go"-value
- hypMyTime = Max(myTime + (hypMTG - 1) * myInc - emergencyBaseTime - Min(hypMTG, emergencyMoveHorizon) * emergencyMoveTime, 0);
+ hypMyTime = limits.time[us]
+ + limits.inc[us] * (hypMTG - 1)
+ - emergencyBaseTime
+ - emergencyMoveTime * std::min(hypMTG, emergencyMoveHorizon);
- mTime = minThinkingTime + remaining(hypMyTime, hypMTG, currentPly);
- aTime = minThinkingTime + remaining(hypMyTime, hypMTG, currentPly);
+ hypMyTime = std::max(hypMyTime, 0);
- *maxSearchTime = Min(*maxSearchTime, mTime);
- *absoluteMaxSearchTime = Min(*absoluteMaxSearchTime, aTime);
+ t1 = minThinkingTime + remaining(hypMyTime, hypMTG, currentPly, slowMover);
+ t2 = minThinkingTime + remaining(hypMyTime, hypMTG, currentPly, slowMover);
+
+ optimumSearchTime = std::min(optimumSearchTime, t1);
+ maximumSearchTime = std::min(maximumSearchTime, t2);
}
+ if (Options["Ponder"])
+ optimumSearchTime += optimumSearchTime / 4;
+
// Make sure that maxSearchTime is not over absoluteMaxSearchTime
- *maxSearchTime = Min(*maxSearchTime, *absoluteMaxSearchTime);
+ optimumSearchTime = std::min(optimumSearchTime, maximumSearchTime);
}
-////
-//// Local functions
-////
namespace {
template
- int remaining(int myTime, int movesToGo, int currentPly)
+ int remaining(int myTime, int movesToGo, int currentPly, int slowMover)
{
- const float TMaxRatio = (T == MaxTime ? 1 : MaxRatio);
- const float TStealRatio = (T == MaxTime ? 0 : StealRatio);
+ const float TMaxRatio = (T == OptimumTime ? 1 : MaxRatio);
+ const float TStealRatio = (T == OptimumTime ? 0 : StealRatio);
- int thisMoveImportance = move_importance(currentPly);
+ int thisMoveImportance = move_importance(currentPly) * slowMover / 100;
int otherMovesImportance = 0;
for (int i = 1; i < movesToGo; i++)
@@ -155,6 +157,6 @@ namespace {
float ratio1 = (TMaxRatio * thisMoveImportance) / float(TMaxRatio * thisMoveImportance + otherMovesImportance);
float ratio2 = (thisMoveImportance + TStealRatio * otherMovesImportance) / float(thisMoveImportance + otherMovesImportance);
- return int(floor(myTime * Min(ratio1, ratio2)));
+ return int(floor(myTime * std::min(ratio1, ratio2)));
}
}