The optimalized Fat Fritz

Discussion of anything and everything relating to chess playing software and machines.

Moderators: bob, hgm, Harvey Williamson

Forum rules
This textbox is used to restore diagrams posted with the [d] tag before the upgrade.
shrapnel
Posts: 1245
Joined: Fri Nov 02, 2012 8:43 am
Location: New Delhi, India

Re: The optimalized Fat Fritz

Post by shrapnel » Sun Dec 01, 2019 12:03 pm

corres wrote:
Fri Nov 29, 2019 11:52 pm
In the cited article of Albert Silver you can see parameters of Fat Fritz on pictures.
Try them.
I did. They don't suit lc0 at all !
So that's a bust.
Still looking for best Settings for twin 2080 Tis Setups...
i7 5960X @ 4.1 Ghz, 64 GB G.Skill RipJaws RAM, Twin Asus ROG Strix OC 11 GB Geforce 2080 Tis

corres
Posts: 1757
Joined: Wed Nov 18, 2015 10:41 am
Location: hungary

Re: The optimalized Fat Fritz

Post by corres » Tue Dec 03, 2019 7:57 am

shrapnel wrote:
Sun Dec 01, 2019 12:03 pm
corres wrote:
Fri Nov 29, 2019 11:52 pm
In the cited article of Albert Silver you can see parameters of Fat Fritz on pictures.
Try them.
I did. They don't suit lc0 at all !
So that's a bust.
Still looking for best Settings for twin 2080 Tis Setups...
Thanks for your information

Albert Silver
Posts: 2867
Joined: Wed Mar 08, 2006 8:57 pm
Location: Rio de Janeiro, Brazil

Re: The optimalized Fat Fritz

Post by Albert Silver » Tue Dec 03, 2019 12:29 pm

shrapnel wrote:
Sun Dec 01, 2019 12:03 pm
corres wrote:
Fri Nov 29, 2019 11:52 pm
In the cited article of Albert Silver you can see parameters of Fat Fritz on pictures.
Try them.
I did. They don't suit lc0 at all !
So that's a bust.
Still looking for best Settings for twin 2080 Tis Setups...
I warned people to not use them for Leela, so I am not in the least surprised. As to the parameters, although they are the result of a very long CLOP tuning (170 hours), it is possible that one of the of the assumptions is simply weaker. My very limited resources sometimes makes testing the way I would like completely impossible. I chose FPU Strategy as Absolute, using also the predetermined value of -1 as selected by Deep Mind, and then tuned the other values around it. It is possible this is just weakening. I do have tests that show FF stronger than Test40 quite clearly, but the catch is that I tested in default lc0 settings for both. I will revisit my settings and a longer tune with no assumptions and see what comes. As to the result I mentioned, just for transparency:

Score of FF v281 vs lc0-v22 Leela 42850: 248 - 185 - 567 [0.531]
Elo difference: 21.92 +/- 14.15

1000 of 1000 games finished.


This was done at a fixed 1600 nodes per move, and was done on a slightly older build I should note. Anyhow, live and learn.
"Tactics are the bricks and sticks that make up a game, but positional play is the architectural blueprint."

corres
Posts: 1757
Joined: Wed Nov 18, 2015 10:41 am
Location: hungary

Re: The optimalized Fat Fritz

Post by corres » Tue Dec 03, 2019 8:59 pm

Albert Silver wrote:
Tue Dec 03, 2019 12:29 pm
...
I do have tests that show FF stronger than Test40 quite clearly, but the catch is that I tested in default lc0 settings for both. I will revisit my settings and a longer tune with no assumptions and see what comes. As to the result I mentioned, just for transparency:
Score of FF v281 vs lc0-v22 Leela 42850: 248 - 185 - 567 [0.531]
Elo difference: 21.92 +/- 14.15
1000 of 1000 games finished.

This was done at a fixed 1600 nodes per move, and was done on a slightly older build I should note. Anyhow, live and learn.
I think a test with fixed nodes can not replace the test with limited time.
Because in practice the games are played on time and not on nodes.

shrapnel
Posts: 1245
Joined: Fri Nov 02, 2012 8:43 am
Location: New Delhi, India

Re: The optimalized Fat Fritz

Post by shrapnel » Wed Dec 04, 2019 3:50 am

corres wrote:
Tue Dec 03, 2019 8:59 pm
I think a test with fixed nodes can not replace the test with limited time.
Because in practice the games are played on time and not on nodes.
+1.
i7 5960X @ 4.1 Ghz, 64 GB G.Skill RipJaws RAM, Twin Asus ROG Strix OC 11 GB Geforce 2080 Tis

Post Reply