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Up Topic Rybka Support & Discussion / Aquarium / ChessOK Aquarium 2020 Freezing BUG
- - By Heer (*) Date 2020-01-13 09:11
First I start infinite analysis.
Second I stop it. Sometimes after some seconds and sometimes after some minutes or hours.
Third I click on the left side another button, for example IDeA and then the programm starts to freeze.

I have really strong hardware so there are no problems like out of memory or something else.

Fourth I need to run task manager and close ChessOK Aquarium 2020 and start it again.
Parent - By mattchess (**) Date 2020-01-14 04:28
I've not experienced this - I regularly go from IA in sandbox to IDEA
Parent - - By Ghengis-Kann (***) Date 2020-01-15 17:35
I experienced this problem with Aquarium 2019 where starting, stopping, and then re-starting IA would cause the program to freeze but have not as yet encountered it with a clean install of AQ2020 that is completely disconnected from any previous work or version.
The new install has also not made use of remote engines with RTHomeserver406 as of yet.

The first thing to look at is to make sure there is not an overallocation of memory.
I'm pretty sure I have caused this by allocating too much memory between the IDEA engines and IA engine.
Cut all the memory allocation down to something really small and see if the problem goes away.

Also check to see if you might have overallocated CPU resources beyond 1 engine thread per hardware thread (including hytperthreading or SMT as "real" cores.
This can also cause that kind of lock up.

That being said, it might just be a bug.
Parent - By Heer (*) Date 2020-01-22 17:50
I have 64 GB RAM.
I have no overallocation of memory.
I can see how much memory is in use. I'm far away from the limit.

I never use IA and IDeA in the same time.

I need only 4 cpu cores for LC0 (+2 GPUs) and I have 6 cpu cores and hyperthreading is off.
Parent - - By RSeanOConnell (**) Date 2020-01-18 20:56 Edited 2020-01-18 23:55 Upvotes 1
I have experienced something similar in Idea.  It continually minimaxes and fills the positions in the tree.  I ultimately have to restart Aquarium.   There ends up being several, sometimes hundreds, of copies of the project in the Idea directory.  I have sent the programmers at Chessok several screenprints.  They are supposedly looking into it.
Parent - - By Uwak (***) Date 2020-01-24 10:27
How do you communicate with the programmers. I have a lot of questions/suggestions to send them.
Parent - - By OempaS (***) Date 2020-01-24 11:13

> How do you communicate with the programmers.

I believe this forum is not maintained by ChessOK. May be they read these comments / may be not....

Just send an email to
It is my experience that they are very helpful.

But before you do that....  use the search function on this forum!
Parent - By Uwak (***) Date 2020-01-24 11:16
Up Topic Rybka Support & Discussion / Aquarium / ChessOK Aquarium 2020 Freezing BUG

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