Setting threads for Stockfish 6 in Arena

[Howard E]

How do I set the number of threads for Stockfish in Arena?
Under the engine configuration there is no thread switch.

[snino64]

This process is common for engines of the same type:
Engines → Manage → UCI → Common max. CPU cores settings → select
Engines → Manage → Winboard → Max. CPU cores → select

Stockfish is a UCI engine, so you should choose the <engines - manage - UCI - Common cores max settings> and set the number of cores you want to use, considering cores your computer

[gordonr]

I agree with setting a common UCI usage but I recently wanted to run an engine match between two UCI engines while having different hash settings. Only when I unticked the common hash setting was I able to then set a specific value in each engine's own config. I wonder if this works the same for threads (sorry, I can't try right now).

[hgm]

Really strange design, that UCI engines obey a different Threads setting than WinBoard engines...

[Sedat Canbaz]

How do I set the number of threads for Stockfish in Arena?
Under the engine configuration there is no thread switch.

Here is the configuration:
1) Open Arena GUI
2) Click from the menu tab 'Engines'
3) Manage
4) Select Stockfish
5) Start this engine right now
6) Right-Click over Stockfish

And then you can increase the cores (the default is 1)

Note also you need to restart the engine to take effects




Hopes helps,
Sedat

[hgm]

Note also you need to restart the engine to take effects

Is this a Stockfish bug or an Arena bug?

[lucasart]

Really strange design, that UCI engines obey a different Threads setting than WinBoard engines...

Has nothing to do with UCI. UCI-wise it's just

Code: Select all

setoption name Threads value X

If Arena doesn't allow to set UCI options normally, then Arena is at fault, not SF nor UCI.

[lucasart]

Note also you need to restart the engine to take effects

Is this a Stockfish bug or an Arena bug?

Firstly the "bug" would have to be confirmed, because we're dealing with users who don't understand what they're doing...

And if it is confirmed it can only be an Arena bug, because once you send:

Code: Select all

setoption name Threads value X

SF immediately resizes the thread pool.

[velmarin]

How do I set the number of threads for Stockfish in Arena?
Under the engine configuration there is no thread switch.

The problem is in the general settings.
You have certainly set to the tab "Engines", "Configure", "UCI"
marked the
"Common max. CPU cores settings" to 1, can do
  and will operate normally.

[rcmaddox]

How do I set the number of threads for Stockfish in Arena?
Under the engine configuration there is no thread switch.

Here is the configuration:
1) Open Arena GUI
2) Click from the menu tab 'Engines'
3) Manage
4) Select Stockfish
5) Start this engine right now
6) Right-Click over Stockfish

And then you can increase the cores (the default is 1)

Note also you need to restart the engine to take effects




Hopes helps,
Sedat

I think you're describing how it works in Arena 3.0.

In version 3.5, you have a common setting for the number of threads. The thread setting doesn't appear in the configurable UCI options, as shown in your graphic.