According to UCI standard once engine receives 'go infinite'
command it should search until the "stop" command and do not exit
the search without being told so, even if PLY_MAX has been reached.
Patch is quite invasive because it cleanups some hacks used
by fixed depth and fixed nodes modes, mainly during benchmarks.
Bug found by Pascal Georges.
Signed-off-by: Marco Costalba <mcostalba@gmail.com>
cerr << "\nBench position: " << cnt << '/' << positions.size() << endl << endl;
if (limitType == "perft")
totalNodes += perft(pos, maxDepth * OnePly);
cerr << "\nBench position: " << cnt << '/' << positions.size() << endl << endl;
if (limitType == "perft")
totalNodes += perft(pos, maxDepth * OnePly);
- else if (!think(pos, true, false, 0, dummy, dummy, 0, maxDepth, maxNodes, secsPerPos, moves))
+ else if (!think(pos, false, false, 0, dummy, dummy, 0, maxDepth, maxNodes, secsPerPos, moves))
break;
totalNodes += nodes_searched();
}
break;
totalNodes += nodes_searched();
}
int SearchStartTime;
int MaxNodes, MaxDepth;
int MaxSearchTime, AbsoluteMaxSearchTime, ExtraSearchTime, ExactMaxTime;
int SearchStartTime;
int MaxNodes, MaxDepth;
int MaxSearchTime, AbsoluteMaxSearchTime, ExtraSearchTime, ExactMaxTime;
- bool InfiniteSearch, PonderSearch, StopOnPonderhit;
+ bool UseTimeManagement, InfiniteSearch, PonderSearch, StopOnPonderhit;
bool AbortSearch, Quit;
bool FailHigh, FailLow, Problem;
bool AbortSearch, Quit;
bool FailHigh, FailLow, Problem;
int time[], int increment[], int movesToGo, int maxDepth,
int maxNodes, int maxTime, Move searchMoves[]) {
int time[], int increment[], int movesToGo, int maxDepth,
int maxNodes, int maxTime, Move searchMoves[]) {
- // Look for a book move
- if (!infinite && !ponder && get_option_value_bool("OwnBook"))
+ // Initialize global search variables
+ Idle = StopOnPonderhit = AbortSearch = Quit = false;
+ FailHigh = FailLow = Problem = false;
+ NodesSincePoll = 0;
+ SearchStartTime = get_system_time();
+ ExactMaxTime = maxTime;
+ MaxDepth = maxDepth;
+ MaxNodes = maxNodes;
+ InfiniteSearch = infinite;
+ PonderSearch = ponder;
+ UseTimeManagement = !ExactMaxTime && !MaxDepth && !MaxNodes && !InfiniteSearch;
+
+ // Look for a book move, only during games, not tests
+ if (UseTimeManagement && !ponder && get_option_value_bool("OwnBook"))
{
Move bookMove;
if (get_option_value_string("Book File") != OpeningBook.file_name())
{
Move bookMove;
if (get_option_value_string("Book File") != OpeningBook.file_name())
- // Initialize global search variables
- Idle = StopOnPonderhit = AbortSearch = Quit = false;
- FailHigh = FailLow = Problem = false;
- SearchStartTime = get_system_time();
- ExactMaxTime = maxTime;
- NodesSincePoll = 0;
- InfiniteSearch = infinite;
- PonderSearch = ponder;
-
for (int i = 0; i < THREAD_MAX; i++)
{
Threads[i].nodes = 0ULL;
for (int i = 0; i < THREAD_MAX; i++)
{
Threads[i].nodes = 0ULL;
// Set thinking time
int myTime = time[side_to_move];
int myIncrement = increment[side_to_move];
// Set thinking time
int myTime = time[side_to_move];
int myIncrement = increment[side_to_move];
-
- if (!movesToGo) // Sudden death time control
- if (myIncrement)
- {
- MaxSearchTime = myTime / 30 + myIncrement;
- AbsoluteMaxSearchTime = Max(myTime / 4, myIncrement - 100);
- }
- else // Blitz game without increment
+ if (!movesToGo) // Sudden death time control
- MaxSearchTime = myTime / 30;
- AbsoluteMaxSearchTime = myTime / 8;
+ if (myIncrement)
+ {
+ MaxSearchTime = myTime / 30 + myIncrement;
+ AbsoluteMaxSearchTime = Max(myTime / 4, myIncrement - 100);
+ }
+ else // Blitz game without increment
+ {
+ MaxSearchTime = myTime / 30;
+ AbsoluteMaxSearchTime = myTime / 8;
+ }
- }
- else // (x moves) / (y minutes)
- {
- if (movesToGo == 1)
+ else // (x moves) / (y minutes)
- MaxSearchTime = myTime / 2;
- AbsoluteMaxSearchTime = (myTime > 3000)? (myTime - 500) : ((myTime * 3) / 4);
+ if (movesToGo == 1)
+ {
+ MaxSearchTime = myTime / 2;
+ AbsoluteMaxSearchTime = (myTime > 3000)? (myTime - 500) : ((myTime * 3) / 4);
+ }
+ else
+ {
+ MaxSearchTime = myTime / Min(movesToGo, 20);
+ AbsoluteMaxSearchTime = Min((4 * myTime) / movesToGo, myTime / 3);
+ }
+
+ if (PonderingEnabled)
- MaxSearchTime = myTime / Min(movesToGo, 20);
- AbsoluteMaxSearchTime = Min((4 * myTime) / movesToGo, myTime / 3);
+ MaxSearchTime += MaxSearchTime / 4;
+ MaxSearchTime = Min(MaxSearchTime, AbsoluteMaxSearchTime);
- if (PonderingEnabled)
- {
- MaxSearchTime += MaxSearchTime / 4;
- MaxSearchTime = Min(MaxSearchTime, AbsoluteMaxSearchTime);
- }
-
- // Fixed depth or fixed number of nodes?
- MaxDepth = maxDepth;
- if (MaxDepth)
- InfiniteSearch = true; // HACK
-
- MaxNodes = maxNodes;
+ // Set best NodesBetweenPolls interval
NodesBetweenPolls = Min(MaxNodes, 30000);
NodesBetweenPolls = Min(MaxNodes, 30000);
- InfiniteSearch = true; // HACK
- }
else if (myTime && myTime < 1000)
NodesBetweenPolls = 1000;
else if (myTime && myTime < 5000)
else if (myTime && myTime < 1000)
NodesBetweenPolls = 1000;
else if (myTime && myTime < 5000)
{
// Time to stop?
bool stopSearch = false;
{
// Time to stop?
bool stopSearch = false;
- // If we are pondering, we shouldn't print the best move before we
- // are told to do so
- if (PonderSearch)
+ // If we are pondering or in infinite search, we shouldn't print the
+ // best move before we are told to do so.
+ if (PonderSearch || InfiniteSearch)
wait_for_stop_or_ponderhit();
else
// Print final search statistics
wait_for_stop_or_ponderhit();
else
// Print final search statistics
|| stillAtFirstMove //FIXME: We are not checking any problem flags, BUG?
|| noProblemFound;
|| stillAtFirstMove //FIXME: We are not checking any problem flags, BUG?
|| noProblemFound;
- if ( (Iteration >= 3 && !InfiniteSearch && noMoreTime)
+ if ( (Iteration >= 3 && UseTimeManagement && noMoreTime)
|| (ExactMaxTime && t >= ExactMaxTime)
|| (Iteration >= 3 && MaxNodes && nodes_searched() >= MaxNodes))
AbortSearch = true;
|| (ExactMaxTime && t >= ExactMaxTime)
|| (Iteration >= 3 && MaxNodes && nodes_searched() >= MaxNodes))
AbortSearch = true;
|| stillAtFirstMove
|| noProblemFound;
|| stillAtFirstMove
|| noProblemFound;
- if (Iteration >= 3 && !InfiniteSearch && (noMoreTime || StopOnPonderhit))
+ if (Iteration >= 3 && UseTimeManagement && (noMoreTime || StopOnPonderhit))