Winboard Forum

Finally, here it is folks. This is pretty much the version that played in the WCRCC, with the addition of native Windows code for SMP compatibility (generously contributed by Teemu Pudas). There are still some weird issues with SMP: only with 2 processors its stable, and even then some searches the child processor won't search. It also still eats up processor time when idle in SMP mode, so either play with ponder off, or just have some extra processors. I just haven't really had the time to fix these problems, but I figure it's better to get something out that kind of works than nothing at all. ZCT does now have a user-adjustable path for EGBBs though.

This release includes Jim Ablett-compiled Windows executables for 32 and 64 bit, SMP and non. There is also an opening book by Dr. Wael Deeb.

https://sourceforge.net/project/showfil ... _id=226014

There is also a new ZCT mailing list, for release announcements, code improvement discussions, bug reports, chatting, etc. You can sign up here: https://lists.sourceforge.net/lists/listinfo/zct-list

A big thanks to Teemu Pudas, Fonzy Bluemers, and Jim Ablett for all kinds of help, Wael Deeb for the book, Patrick Buchmann, Graham Banks, and Aart Bik for running tournaments with ZCT, and everyone else that uses ZCT. I hope you enjoy this latest offering.

Thanks Zach! One suggestion, incorporate 32-bit/64-bit and SMP/non-SMP in the ID name that the engine reports, so that it is easier for hosts to include and identify different compiles of the same version in a tournament.

Thanks Zach.

Thanks Zach,
here are some bench results on my Core2Duo @ 3200:

32bit 1CPU with egbbs
Total nodes=35840146
Total time=1:04
Nodes per second=553464

repeat
Total nodes=35840146
Total time=59.561
Nodes per second=601738

without egbbs
Total nodes=35613865
Total time=36.441
Nodes per second=977302

64bit 1CPU without egbbs
Total nodes=32687897
Total time=25.630
Nodes per second=1275376

64bit 2CPU without egbbs
Total nodes=35613865
Total time=28.595
Nodes per second=1245457

looks like no differences in this test with 2CPUs..
but it works! As soon as engine is running in console mode with 2CPUs I see 50% CPU usage

as you told us: like Crafty and Chessmaster...

best
Werner