Search found 434 matches

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: 2275

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: 2275

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: 2275

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: 2275

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
by AndrewGrant
Mon Jan 21, 2019 5:08 am
Forum: Computer Chess Club: General Topics
Topic: Official Release of Ethereal 11.25
Replies: 17
Views: 2275

Re: Official Release of Ethereal 11.25

Elo Estimates for 1 CPU Performance (tested vs Ethereal 11.00)

Code: Select all

ELO   | 26.14 +- 4.88 (95%)
CONF  | 10.0+0.1s Threads=1 Hash=8MB
Games | N: 10000 W: 2946 L: 2195 D: 4859

ELO   | 27.51 +- 4.44 (95%)
CONF  | 60.0+0.6s Threads=1 Hash=64MB
Games | N: 10060 W: 2559 L: 1764 D: 5737
by AndrewGrant
Mon Jan 21, 2019 1:40 am
Forum: Computer Chess Club: General Topics
Topic: Official Release of Ethereal 11.25
Replies: 17
Views: 2275

Official Release of Ethereal 11.25

Hello all, Its been four months since the last release as a result of taking some time away from development. However I'm back now with V11.25 :) Binaries for nopopcnt, popcnt, and pext for Windows, as well as armv7 and armv8 for Android are here Elo estimates are currently pending. The first batch ...
by AndrewGrant
Sun Jan 20, 2019 12:47 pm
Forum: Computer Chess Club: General Topics
Topic: Hyperthreading on or off
Replies: 9
Views: 777

Re: Hyperthreading on or off

I have a 2 x E5-3696v3 system with 36 cores . I was playing with Hyperthreading & Ran some benchmarks. Here are the results. HT Off 35 threads command : bench 256 35 24 default depth =========================== Total time (ms) : 39832 Nodes searched : 2496591345 Nodes/second : 62678031 HT On 70 thr...
by AndrewGrant
Thu Jan 17, 2019 1:49 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Playing transposition table moves in the Quiescence search
Replies: 14
Views: 1260

Re: Playing transposition table moves in the Quiescence search

I did an experiment where I summed up the number of times that depth -<N> was reached during the QS. First result uses ./Ethereal bench 20 32 4096 (Depth 20, 32 threads, 4GB hash). Column one is with TT moves in QS, column two is without. |-------------|-------------|-------------| | DEPTH | COUNT |...
by AndrewGrant
Thu Jan 17, 2019 12:52 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Playing transposition table moves in the Quiescence search
Replies: 14
Views: 1260

Playing transposition table moves in the Quiescence search

Recently I've found elo by probing the Transposition Table (TT) during the Quiescence Search (QS) in order to generate cutoffs. However, I am not currently making any use of the ttmove which can be found. Currently my QS only generates tactical moves -- no quiets what-so-ever, not even checks or eva...
by AndrewGrant
Mon Dec 17, 2018 4:01 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: sprt question
Replies: 3
Views: 750

Re: sprt question

Hi, I've a modification on his OpenBench on my fork that i can input the minimum number of games i want to use in a test, i use it to make regression tests with a fixed number of games. This is my modifications: Change PS.: You'll need to patch your database to create the mingames column. +1, I wou...