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Up Topic Rybka Support & Discussion / Aquarium / Preferred setup for multiple Idea projects??
- - By RSeanOConnell (**) Date 2019-11-15 21:28
I usually have two or more projects with multiple root nodes running at the same time.   I have a 4 Core processor with 8 gig ram(upgrading soon) Obviously not as intense as many others on this board.  I set up different positions from my games and let Idea run for days disabling roots as I get enough positions.

What is the best configuration for the engine, Komodo 10, and Idea to get the most out of my system?

Thank you
Parent - - By Ghengis-Kann (***) Date 2019-11-18 17:47
For computer versus computer games the default Komodo settings are best.
If you are analyzing to prepare for human versus human then enable MCTS mode because it's ideas are more comprehensible to the human mind.

Monte-Carlo Tree Search (Komodo MCTS or Leela), is a shallower search that is based on win probabilities from random "Play outs".
Leela also has a set of weights that give it the equivalent of human intuition, which can be good or bad depending on the position.

Traditional engines like Stockfish will base their analysis on a single position that can be 30 or 40 moves in the future, and rely on difficult to find tactical tricks or "computer moves" that are essentially irrelevant to human play.

With a single quad core processor I would enable hyperthreading and run 7 versions of the engine with 1 thread each, leaving a single thread for Aquarium itself and everything else the computer is doing.
You are spread pretty thin and that will help to keep things moving along on the various aspects of your analysis.
Parent - - By RSeanOConnell (**) Date 2019-11-21 03:58 Edited 2019-11-21 04:02
Thank you so much for your reply!  I changed the thread count from 4 to 7.  I have the hash size set at 1000.  Is that ok?  Planning on increasing that when I add RAM.  Will that help?  Also, I could not find the option to enable MCTS.  Where would I find that?  I am analyzing to prepare against humans.  Should I give the Hash file a name vs leaving that field blank?  Also, when I go into the engine setup from within Idea I have the engine count for Komodo set to 4.  Is that correct? Thank you advance for you help.
Parent - - By Ghengis-Kann (***) Date 2019-11-21 17:58
Hi Sean.

That doesn't sound right at all.

You have a quad core processor that undoubtedly has 8 hardware threads (Intel Hyperthreading or AMD Simultaneous Multithreading)
Each processor core has 2 arithmetic logic units that share certain resources, like a bus to main memory.

My suggestion is to run 7 individual engines in IDEA with 1 hardware thread assigned to each, leaving the final available thread to do everything else.
The way you enable this is to set the number of threads to 1 in the engine properties window and the engine count in IDEA to 7.
What you did is assign 4 engines to each simultaneously use almost all of your available processing power.

I have not been able to discern any clear relationship between hash table size and analysis quality, but have not extensively investigated it either.
I usually assign about half of my available memory spread out among the engines.

There is a check box in the Komodo engine settings for Use MCTS, but only after version 11 point something.

Automatic IDEA expansion is probably not the best way to build a repertoire for OTB play, especially given your limited resources.
You will get more efficient use out of the engines by going to the root position of whatever opening or variation you are studying, search the database for games with that position, right click the list, "select all", right click again, send games to IDEA, check the "from search position" box, and send anywhere from 2 to 10 positions from the games to IDEA.

This will give you a tree of analyzed moves that humans actually played in tournament games, and provide a solid foundation upon which to build with automatic expansion.
Parent - - By RSeanOConnell (**) Date 2019-11-22 17:59
Doh.  I was doing the opposite with the threads and CPU count.  Thank you so much for the help.  Looks like I need to upgrade to Komodo 11+.

Again thank you for your time!!
Parent - - By Ghengis-Kann (***) Date 2019-11-22 18:34
What's your rating?
I'm currently 1890 USCF.

Have dreams of making Master but it's really hard to improve after you hit a plateau.
Parent - By RSeanOConnell (**) Date 2019-11-22 18:37
Ha.  I am embarrassed to say.  After a three year break due to work I recently started playing again.  Was in the 1900s pushing for expert, which is my goal.  Been playing really really stupid lately.  I am at 1720 after my latest tournament.
Parent - - By RSeanOConnell (**) Date 2019-11-22 19:06 Edited 2019-11-22 19:21
So I changed the engine count from 4 to 7 and the thread count to 1.  It jammed up my laptop.  Couldn't do anything.:confused:

Processor:AMD A10-7400 Radeon R6, 10 Compute Cores 4c + 6G, 2500 Mhz, 4 Core(s)....

Admittedly I don't know what a lot of that means.
Parent - - By pawnslinger (****) Date 2019-11-27 03:18 Upvotes 1
Those old AMD chips are really not much good at multi-threading.  I used have such a laptop, but had to give it up (due to poor chess performance).  Nowadays I would recommend one of the Intel or AMD desktop processors (ones no more than 3 years old, and the more physical cores the better).  Buy as much as you can afford (number of cores that is).  I just purchased an AMD Ryzen 7 2700 for my son, for about 150 bucks... a great chip for chess work.  He will use it for other games and video production.

Personally, I use an AMD Ryzen 7 1700X, and it gave my elo quite a boost after I started using it.  Enough so that I did finally earn my IM title.
Parent - By RSeanOConnell (**) Date 2019-11-29 16:23
Thank you!!  Had been looking at new processors.  This helps a lot and increases my feeling that I need a better processor.
Parent - By RSeanOConnell (**) Date 2019-11-22 21:07
Had a little extra time today so did a little reading on engine settings.   I have 3 instances running with 4 threads and Hash at 2048mb.   Changed a few other options as well.  CPU usage is around 92% and Ram is at 96%.  Seems to be humming along.  Two projects running.  1 sec AND 30 ply on the openings.  Will see how much the position count grows over about 4 hours or so....

I am still able to use open the web browser and respond while it is running.
Parent - - By OempaS (***) Date 2019-11-26 19:53
Hi Sean
you could read the help file that comes with Komodo.
It gives explanations about functions and the default settings. Especially so for memory allocation.
Parent - By RSeanOConnell (**) Date 2019-12-06 01:00
Thank you
Up Topic Rybka Support & Discussion / Aquarium / Preferred setup for multiple Idea projects??

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