cant play tournments :( problems with Andscacs, Chiron and

[Hugo]

...Stockfish
Hello there

I need help with a technical problem on a machine with 2 cpu sockets.
When I am running a tournament and for example Andscacs and Chriron are playing at the same time, they both share cpu node 0. If engines set to 15 cpu on a 16 cpu node, they only take 23% instead of 47% cpu power.
With Stockfish- Chiron or Stockfish- Andscacs, bothe engines do not reach the full 47%... just arround 30 - 40% which might be related to the same CPU Affinity problem.
Houdini for example has an extra option in the UCI settings, to avoid this cpu-affinity problem.
Can someone of the engine authors tell me please how to handle this problem?

kind regards, Clemens Keck

[cdani]

...Stockfish
Hello there

I need help with a technical problem on a machine with 2 cpu sockets.
When I am running a tournament and for example Andscacs and Chriron are playing at the same time, they both share cpu node 0. If engines set to 15 cpu on a 16 cpu node, they only take 23% instead of 47% cpu power.
With Stockfish- Chiron or Stockfish- Andscacs, bothe engines do not reach the full 47%... just arround 30 - 40% which might be related to the same CPU Affinity problem.
Houdini for example has an extra option in the UCI settings, to avoid this cpu-affinity problem.
Can someone of the engine authors tell me please how to handle this problem?

kind regards, Clemens Keck

Are you trying to play ponder on?

Can you try this version:

www.andscacs.com/andscacs089185b.zip

I'm not sure if its related to the change I have done because I don't have access to 2-socket server. I hope it works.

[Hugo]

i play ponder off. seems your engine usese always node 0.
I will try this version soon.
thx
CK

[Hugo]

Hello Daniel Jose

this version of Andscacs is working fine on dual socket machines. It is not "nailed" on using only cpu-node 0.
Thank you very much ! I will let it participate in my next MP tournament which starts today with a test-run.

best regards, Clemens Keck

[cdani]

Hello Daniel Jose

this version of Andscacs is working fine on dual socket machines. It is not "nailed" on using only cpu-node 0.
Thank you very much ! I will let it participate in my next MP tournament which starts today with a test-run.

best regards, Clemens Keck

Nice!
If anyone is interested, I disabled the
WinProcGroup::bindThisThread
stuff.
I will add an uci option so the user can decide what to do with it.