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jdart1 / arasan-chess

Arasan chess engine
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Arasan 21 win64 POPCNT time forfeits - ChessGUI 40/2 round robin #19

Closed yellow-panther closed 6 years ago

yellow-panther commented 6 years ago

Hello Jon, cf. game 7, 12, 23, 24, 32, 35, 36, 59, 60 DEBUG.zip OUTPUT.zip TOURNAMENTS.zip

jdart1 commented 6 years ago

Did this tournament have ponder enabled? There are some known issues with ponder on, fixed in the current master branch.

yellow-panther commented 6 years ago

round robin with alternate colours, but the option ponder was disabled.

jdart1 commented 6 years ago

This looks to me like a problem with lag. In game 7 for example for the last move Arasan has 2594 milliseconds left. The last info line indicates it spent 880 milliseconds in the search and then it generates a bestmove. However, the debug log says "Eng01 (arasanx-64-popcnt) thought for 2715 milliseconds." It also indicates "System time lag per move = 1578 milliseconds". I am a little unclear about this because 1578+880 is less than 2715. But in any case, the lag is significant. The dev version has a Move overhead parameter that can be used to alleviate problems with lag. This will be in the next release (21.1), due pretty soon.

jdart1 commented 6 years ago

Please try the new Move overhead option and see if setting an appropriate value for that alleviates the issue. Closing this for now but please re-open if it is still an issue.