Computer Chess Club Archives




Subject: Re: PONDER=ON and TableBases on 1 PC

Author: Fabio Barrettone

Date: 06:19:00 08/01/01

Go up one level in this thread

>Hmmn - I have a totally different experience. When I run with ponder=ON on my
>single CPU Win98 system under Winboard (or under Xboard and Linux), I get about
>50% CPU time for both programs (and the few programs I tried). Under the Fritz 6
>GUI, playing Firz vs. Yace, Fritz gets 80% CPU and Yace 20% CPU. Running
>Tiger-Yace under CA6, Tiger gets 80% CPU and Yace 20% CPU.
>Yace does not lower its priority, nor does it try steal any CPU-cycles.
>This clearly shows, that on my computer, running under CB with ponder on is
>almost useless.

It works well only with Chessbase engines. If you use ponder=on on one machine
only and have enough time (at last 40 moves in 40 minutes), the Chessbase GUI
will give them both the same CPU usage after a bit. However it is true that with
non-Chessbase engines the GUI don't work this way, probably because it doesn't
handle the engine directly.


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