Search found 440 matches

by AndrewGrant
Tue Jun 04, 2019 9:57 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: is LVA as in MVV-LVA useless ?
Replies: 9
Views: 598

Re: is LVA as in MVV-LVA useless ?

I would make the argument that Stockfish as an engine is powerful enough to not rely on relatively simple methods of move sorting. I joined the chess world a bit late to see the massive elo gains from adding various continuation histories to Stockfish, but I think it would be naive to not consider t...
by AndrewGrant
Tue May 28, 2019 5:33 am
Forum: Computer Chess Club: General Topics
Topic: New Ethereal
Replies: 4
Views: 1024

Re: New Ethereal

I compiled a popcnt version. It seems to work fine, but kinda strange that it compiled it 1 second... with stockfish it takes about a minute. But I ran it in the fritz GUI and everything seems fine, I get 18,000 knps with my ryzen 1700 using 16 threads. I uploaded it to zippyshare if anyone wants i...
by AndrewGrant
Fri Mar 15, 2019 6:48 am
Forum: Computer Chess Club: Tournaments and Matches
Topic: Ethereal 11.25 64-bit Gauntlet for CCRL 40/40
Replies: 2
Views: 276

Re: Ethereal 11.25 64-bit Gauntlet for CCRL 40/40

Thanks, Graham. I'm very happy to that the gains are seen in this test. I was worried after seeing minimal progress in on 40/4 4-CPU list. I suspect a small or unlucky sample size is to blame, and this data for 40/40 1-CPU makes me feel a bit better :)
by AndrewGrant
Sun Mar 10, 2019 10:40 pm
Forum: Computer Chess Club: General Topics
Topic: Will TCEC need to rewrite their rules?
Replies: 11
Views: 1562

Re: Will TCEC need to rewrite their rules?

Just to be clear, I have no issues with lc0 or Allie. My issue is with the somewhat arbitrary and vague TCEC rules governing Neural Network engine participation. These rules state: Definition A neural network is a computer system modeled on the human brain and nervous system. For the purpose of TCE...
by AndrewGrant
Sun Mar 03, 2019 3:03 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 20 New NN Engines has been reported to the TCEC
Replies: 10
Views: 1927

Re: 20 New NN Engines has been reported to the TCEC

The Baron does not use neural nets (yet). The version registered to TCEC is a NUMA aware compile of 3.44 Richard. Is NUMA awareness currently required at TCEC? Condition for required: Running windows with 64+ threads. Without NUMA awareness you can't get optimal thread to CPU distribution. Conditio...
by AndrewGrant
Sat Mar 02, 2019 5:15 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: 20 New NN Engines has been reported to the TCEC
Replies: 10
Views: 1927

Re: 20 New NN Engines has been reported to the TCEC

The Baron does not use neural nets (yet). The version registered to TCEC is a NUMA aware compile of 3.44 Richard. Is NUMA awareness currently required at TCEC? Condition for required: Running windows with 64+ threads. Without NUMA awareness you can't get optimal thread to CPU distribution. Conditio...
by AndrewGrant
Sat Jan 26, 2019 7:45 pm
Forum: Computer Chess Club: General Topics
Topic: Official Release of Ethereal 11.25
Replies: 17
Views: 3271

Re: Official Release of Ethereal 11.25

At Chessowl, I completed a 30 engines x 100 gauntlet with Ethereal 11.25 vs. Top Chess Engines but found out that there were hundreds of losses by time forfeit with Ethereal. This is not acceptable for rating list posting although the score is more or less the same with version 11.11, so I had to w...
by AndrewGrant
Fri Jan 25, 2019 6:05 pm
Forum: Computer Chess Club: General Topics
Topic: Official Release of Ethereal 11.25
Replies: 17
Views: 3271

Re: Official Release of Ethereal 11.25

At Chessowl, I completed a 30 engines x 100 gauntlet with Ethereal 11.25 vs. Top Chess Engines but found out that there were hundreds of losses by time forfeit with Ethereal. This is not acceptable for rating list posting although the score is more or less the same with version 11.11, so I had to w...
by AndrewGrant
Tue Jan 22, 2019 9:50 am
Forum: Computer Chess Club: General Topics
Topic: Official Release of Ethereal 11.25
Replies: 17
Views: 3271

Re: Official Release of Ethereal 11.25

Hi Andrew, in some endgame positions Ethereal 11.25 seems to "freeze" but CPU is 100 %. Conditions: Windows 10, i7 with 4 cores, syzygy 6men. Here is an example. At first Ethereal 11.00 looks fine and nromal: FEN: 2k2K2/8/pp6/2p5/2P5/PP6/8/8 w - - 0 1 Ethereal 11.00: 1/1 00:00 24 24k +0,87 Kf8-g7 2...
by AndrewGrant
Mon Jan 21, 2019 9:03 am
Forum: Computer Chess Club: General Topics
Topic: Official Release of Ethereal 11.25
Replies: 17
Views: 3271

Re: Official Release of Ethereal 11.25

Elo Estimates for 8 CPU Performance (tested vs Ethereal 11.00)

Code: Select all

ELO   | 40.84 +- 4.78 (95%)
CONF  | 5.0+0.05s Threads=8 Hash=64MB
Games | N: 10170 W: 3140 L: 1950 D: 5080

ELO   | 43.54 +- 5.76 (95%)
CONF  | 20.0+0.2s Threads=8 Hash=256MB
Games | N: 6000 W: 1669 L: 921 D: 3410