Search found 238 matches

by mathmoi
Fri Apr 29, 2011 2:31 pm
Forum: Computer Chess Club: General Topics
Topic: What's the latest on the Rybka-Fruit situation
Replies: 40
Views: 11934

Re: What's the latest on the Rybka-Fruit situation

@Onno: there is a newer version of the Mark Watkins paper here. Thanks. That seems to be what I have overlooked. It now mentions also Crafty. The evidence shown there looks quite heavy, nevertheless it should neither be relevant for the current ICGA investigation nor for Fabien and the Fruit-Rybka ...
by mathmoi
Mon Apr 11, 2011 1:17 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Tool for automatic black-box parameter optimization released
Replies: 57
Views: 12240

Re: Tool for automatic black-box parameter optimization rele

Sorry for the thread necromancy, but is this tool still avaible somewhere?

Thanks
by mathmoi
Sat Oct 30, 2010 5:04 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Is a querying the hash tables such a huge bottleneck?
Replies: 61
Views: 11494

Re: Is a querying the hash tables such a huge bottleneck?

One more question: Do you force the "bucket" to lie on a 64 byte address boundary so that you are only incurring one hash line fill, as opposed to two? How do you do that? malloc() 63 bytes more than you need. Then add 63 to the address malloc() returns, and AND that with ~63 (0xffffffc0). Now the ...
by mathmoi
Fri Oct 29, 2010 4:07 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 4CPU and 4 different evals.
Replies: 22
Views: 3856

Re: 4CPU and 4 different evals.

Uri Blass wrote:I think that it is a bad idea.

chess is not democracy and I suspect that if you give players with similiar strength to vote about a move you can expect playing strength that is weaker than every one of them.
At the very least the strength will be weaker than the best of them.
by mathmoi
Thu Oct 28, 2010 4:54 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Is a querying the hash tables such a huge bottleneck?
Replies: 61
Views: 11494

Re: Is a querying the hash tables such a huge bottleneck?

bob wrote:One more question: Do you force the "bucket" to lie on a 64 byte address boundary so that you are only incurring one hash line fill, as opposed to two?
How do you do that?
by mathmoi
Thu Jun 17, 2010 4:51 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: search speed
Replies: 6
Views: 1538

Re: search speed

You could try Sharper it's an engine written in C#. It was used a couple years ago to compute the value of perft(11) from the start position.
by mathmoi
Fri May 07, 2010 6:22 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Compiling under Linux
Replies: 20
Views: 2199

Re: Compiling under Linux

That. Or you could simply do :

Code: Select all

sudo apt-get install g++ build-essential
g++ *.cpp
by mathmoi
Thu Apr 01, 2010 1:53 pm
Forum: Computer Chess Club: General Topics
Topic: Domain http://www.playwitharena.com for sale
Replies: 2
Views: 899

Re: Domain http://www.playwitharena.com for sale

I offer you two fishes. What do you say?
by mathmoi
Wed Mar 24, 2010 7:47 pm
Forum: Computer Chess Club: General Topics
Topic: Linux GUI with variation board
Replies: 12
Views: 2069

Re: Linux GUI with variation board

wxBoard would be really cool :)