Manual de Fritz 15 2015 | Page 266

266

Fritz 15 Help

CPU usage - In case you want to use less than one core, set it in this parameter.
Main Process Priority / Child Process Priority: Changes the engine priority without
needing to visit the Task Manager. For instance:
Inherit should be to start the main process at the same priority of the GUI.
NalimovUsage - Same as in Rybka 3 (affects how much she is slowed by tablebases,
default should be best).
Use Large Pages - After you set "lock pages in memory" in the OS, expect some 15%
speed up if you give her 1GB Hash (or more, less hash should also give benefits but
not as dramatic - only lasts until you unload the engine, then you'll probably have to
reboot the computer for this to take effect again).
Always Score Main Move - With this OFF Rybka would move into looking for
alternative moves in fail lows, with ON she will first give the move a score.
Recommended to set it ON for analysis, OFF for games.
Display Upperbounds - With this OFF Rybka would not tell the user when a fail move
happened, so if you were away from the computer you wouldn't have a way to know.
Recommended to set it ON for interactive analysis, OFF for games.
Preserve analysis - Same as R3 (Engine keeps old contents on the hash for much
longer, slows her down the more positions analyzed. I chose to keep it OFF).
Clear Hash - Allows Rybka to get a fresh look at the position.
Hash File / Save Hash / Load Hash - Used for when you are going to unload the
engine or reboot, so Rybka keeps the hash contents on reload (I never use this).
MultiPV_cp - Same as R3 (Controls how worse than best the moves have to be to
appear on MultiPV, e.g. a value of 0 only would show moves that are exactly as good
as the best move).
TCBuffer - How many seconds Rybka thinks she has subtracted from the clock. Useful
for bullet (1 '0) and blitz games (3 '0) so Rybka avoids losing on time (by time stolen
by the GUI or the opposing engine, like clones), and also may give a general better
time management when set at 3 (setting does nothing on incremental or repeating
time controls.)
TCNormal Move Time - The rate at which Rybka should play the game. Lower values
will make the engine play faster, and vice versa.
TC Max Move Time - The amount of time Rybka is willing to spend in critical positions
(higher values will make her think longer on such cases).
These last 3 settings are extremely sensitive to hardware, time control and even,
opponent, so to see Rybka 4 shine on games, you'll probably need to experiment a lot
to find the optimal settings, but the gains can be significant.
[Pieces cp] - The offset of the pieces in centipawns. Please note that the behavior is

© ChessBase 2015