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Up Topic Rybka Support & Discussion / Aquarium / Setting up a new engine
- - By cma6 (****) Date 2020-02-15 20:34
Let's say that you have 12 physical cores and want to use 11 of them for Stockfish.
Now you set up an new engine, "SF", and point to the latest SF.exe on your system. You set the Threads parameter to "11".
   When you run SF in the Database pane for infinite analysis, does Aqr access that one SF.exe file and use 11 physical cores?

2nd question. Create a new engine called "IDeA_SF" and point to the same file SF.exe on your system. In this engine's parameters, set Threads to "1".
  In  IDeA/Engines, add the engine "IDeA_SF" with a Count of 11. Now run IDeA on one of your projects and use the checked engine "IDeA_SF".
  Does IDeA access this one file "SF.exe" or does RTHome Server come into the picture in any way, assuming one has only one computer system?
Parent - By mattchess (**) Date 2020-02-15 23:09 Upvotes 1
If you set the threads to 11 in the engine settings, it runs that engine using 11 threads for analysis.

If you set the threads to 1, and then in IDEA specify a count of 11, it runs 11 instances of that engine with one thread each.
Parent - - By Ghengis-Kann (***) Date 2020-02-20 00:45
Using the same exact engine for IDEA and IA is asking for trouble.

I suggest you copy and paste SF.exe, then rename copy of SF.exe to SF_IA.exe and add both engines to aquarium.

In addition to avoiding possible problems this will also allow you to set separate numbers of threads for the IDEA and IA engines.
Parent - - By mattchess (**) Date 2020-02-20 02:57
I agree that you should create two engine profiles in the engine setup (one with 1 thread and one with however many threads you want for IA) and give those two profiles different names.  But I don't see a need to point to two different .exe files.  Aquarium will run instances of the engine based on the profiles you create in the engines setup tab.  Just as aquarium runs multiple instances of the engine in IDEA based on how many instances you assign.

What is your concern with pointing to the same .exe file?
Parent - By Ghengis-Kann (***) Date 2020-02-20 17:10
I always let Aquarium get the engine name automatically so the .exe names need to be different for me.

Not sure if it still exists but at one time there was an issue where the engine ratings wouldn't be changed by engine vs. engine games if I changed the name in the engine settings, but worked fine if I left the "get name automatically" there and re-named the .exe.
Parent - By cma6 (****) Date 2020-02-24 03:07
That is exactly what I do. I call one engine "aSF" and the other one "IDeA_SF" and both point to the same .exe file. I've never had a problem with that.
Up Topic Rybka Support & Discussion / Aquarium / Setting up a new engine

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