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RedQueen 1.1.1 on Mac OS X

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Ben-Hur Carlos Langoni

Joined: 16 Oct 2008
Posts: 449
Location: Milky Way

Post subject: Re: RedQueen 1.1.1 on Mac OS X Posted: Sat Mar 17, 2012 12:43 pm

lucasart wrote:

I tested your Linux 64-bit compile and got the same problem. So there must be something wrong in the code, and the problem is not linked to his mac compile. Things to look for:
* is the allocated time always less than the remaining time minus buffer ?
* how frequent is the polling code called ?

Hi Lucas,

This is the polling code:

Code:

const bool SimplePVSearch::stop(SearchInfo& info) {
if ((agent->getSearchNodes()>0 &&
      agent->getSearcher(MAIN_THREAD)->getSearchedNodes() >= agent->getSearchNodes())) {
   return true;
}
if (timeIsUp() || agent->shouldStop()) {
   return true;
}
return info.splitPoint!=NULL && info.splitPoint->shouldStop;
}

...

// time is up?
inline const bool SimplePVSearch::timeIsUp() {
if (searchFixedDepth ||
      infinite || (nodes & nodesToGo)) {
   return false;
}
return getTickCount()>=timeToStop;
}

...

The search initialization code:

Code:

// root search
void SimplePVSearch::search(Board board) {
prepareToSearch();
setStartTime(getTickCount());
setTimeToStop();
searchScore = idSearch(board);
time = getTickCount()-getStartTime();
}

The frequency of the polling (based on the number of nodes processed):

Code:

nodesToGo = getTimeToSearch()<=1000?fastNodesToGo:defaultNodesToGo;

....
// constants
const int64_t defaultNodesToGo=0xFFF;
const int64_t fastNodesToGo=0xFF;
....

The problem is in the function that calculates the time to be used by search:

Code:

const int64_t SearchAgent::getTimeToSearch(const int64_t usedTime) {
if (getSearchMode()==SearchAgent::SEARCH_MOVETIME) {
   return getMoveTime();
}
int64_t time=board.getSideToMove()==WHITE? getWhiteTime():getBlackTime();
//int64_t incTime=board.getSideToMove()==WHITE?getWhiteIncrement():getBlackIncrement();
int64_t movesLeft = defaultGameSize;
time-=usedTime;
if (movesToGo>0) {
   movesLeft = std::min(movesToGo,15);
   if (movesToGo<=2) {
      time=time*70/100;
   } else {
      time=time*99/100;
   }
} else {
   for (int x=0;x<timeTableSize;x++) {
      if (time<timeTable[x][1] && time >= timeTable[x][2]) {
         movesLeft=timeTable[x][0]+
               (maxGamePhase-board.getGamePhase())/2;
         break;
      }
   }
   time=time*97/100;
}
return time/movesLeft/*+incTime*/;
}

Commenting out the code (+incTime) above should "fix" the problem. But I am not sure what is the best approach for handling time control with increments...

Regards,
_________________
Ben-Hur Carlos Langoni Junior
http://sourceforge.net/projects/redqueenchess/

Display posts from previous:

Subject	Author	Date/Time
RedQueen 1.1.1 on Mac OS X	Robert Purves	Fri Mar 16, 2012 1:29 am
Re: RedQueen 1.1.1 on Mac OS X	Ben-Hur Carlos Langoni	Fri Mar 16, 2012 7:53 pm
Re: RedQueen 1.1.1 on Mac OS X	Lucas Braesch	Sat Mar 17, 2012 5:57 am
Re: RedQueen 1.1.1 on Mac OS X	Ben-Hur Carlos Langoni	Sat Mar 17, 2012 12:43 pm
Re: RedQueen 1.1.1 on Mac OS X	Lucas Braesch	Sat Mar 17, 2012 6:01 pm
Re: RedQueen 1.1.1 on Mac OS X	Ben-Hur Carlos Langoni	Sat Mar 17, 2012 6:19 pm
Re: RedQueen 1.1.1 on Mac OS X	Lucas Braesch	Sun Mar 25, 2012 4:01 am
Re: RedQueen 1.1.1 on Mac OS X	Ben-Hur Carlos Langoni	Mon Mar 26, 2012 2:30 pm
Re: RedQueen 1.1.1 on Mac OS X	Lucas Braesch	Tue Mar 27, 2012 5:21 am
Re: RedQueen 1.1.1 on Mac OS X	Ben-Hur Carlos Langoni	Tue Mar 27, 2012 1:06 pm
Re: RedQueen 1.1.1 on Mac OS X	Lucas Braesch	Sun Apr 01, 2012 11:51 am

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