multithread search paper and documentation

[elcabesa]

hi,
I'd like to add multithreading to my new engine.
I started reading something and looking inside some multithread engine to start understand the topic.

could you please point me to some easy implementation/ easy to read code , paper, documentation and so on?

I think I'll start letting more than one thread search the starting position indendently just to see if I can control all the thread and whether the data structure are correct or not.

but in the future I'd like to implement a real mt search

thank you all

[Codesquid]

A good starting point to get an overview is http://chessprogramming.wikispaces.com/Parallel+Search

[Daniel Shawul]

Hashtable is your friend. First try sharing it using processes and see what you get. Then go for ABDADA if you are up to it. You might find the easy SMP discussions started by Dan Homan useful.

[Ajedrecista]

Hello Marco:

hi,
I'd like to add multithreading to my new engine.
I started reading something and looking inside some multithread engine to start understand the topic.

could you please point me to some easy implementation/ easy to read code , paper, documentation and so on?

I think I'll start letting more than one thread search the starting position indendently just to see if I can control all the thread and whether the data structure are correct or not.

but in the future I'd like to implement a real mt search

thank you all

I am not a programmer but I have read many times that Viper (a weak version of Glaurung) is very instructive for add SMP to an engine. I do not know if you have looked at Viper source code... anyway, here is the link:

Viper

Good luck!

Regards from Spain.

Ajedrecista.

[elcabesa]

thank you all
I'm already reading CPwiki

[velmarin]

Bobcat would be an easy way to implement in your engine, performance is not impressive, but ... learn ...

https://github.com/Bobcat/bobcat

Also a few months ago there was a discussion in the forum where it was C + +11, with SMP instructions, but can not remember the engine,
You might like ...
Luck ..

[elcabesa]

I can't find dan homan thread, has anyone a link?

[Robert Pope]

Maybe these?

http://talkchess.com/forum/viewtopic.ph ... hlight=smp
http://talkchess.com/forum/viewtopic.ph ... hlight=smp
http://talkchess.com/forum/viewtopic.ph ... hlight=smp
http://talkchess.com/forum/viewtopic.ph ... hlight=smp

[petero2]

Also a few months ago there was a discussion in the forum where it was C + +11, with SMP instructions, but can not remember the engine

Maybe you are thinking of this: http://talkchess.com/forum/viewtopic.php?t=48752

[velmarin]

Also a few months ago there was a discussion in the forum where it was C + +11, with SMP instructions, but can not remember the engine

Maybe you are thinking of this: http://talkchess.com/forum/viewtopic.php?t=48752

Yes, Thanks, I'll put in favorites ...