Search found 1174 matches

by Joost Buijs
Fri Oct 16, 2020 5:17 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Simple test positions
Replies: 6
Views: 366

Re: Simple test positions

The slow speed doesn't help either, 62 knps seems a bit slow for a simple position like this. Is the engine running on a RPI-1 or does it run with debug code?
by Joost Buijs
Fri Oct 16, 2020 4:23 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ethereal Tuning - Data Dump
Replies: 16
Views: 1264

Re: Ethereal Tuning - Data Dump

it was marked as rofchade, not rpirofchade, so I guess the full on version, 64x. Significant was not really the hardware it was on, but the absolute dominance of the eval function, they were evaluation crushes not search ones. mobility and positional. not fireworks, which I guess figures, those sma...
by Joost Buijs
Fri Oct 16, 2020 4:05 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ethereal Tuning - Data Dump
Replies: 16
Views: 1264

Re: Ethereal Tuning - Data Dump

I ran a test and got no useful results. That is, the tuning was unable to produce any improvement over Schooners master PST's. 1 Schooner2.25-sse 2 8 3000 50% 60% 2 Schooner-E12_2 2 8 3000 50% 61% 3 Schooner1_125_end_2nd 1 8 3000 50% 60% 4 Schooner-E12_1 -4 8 3000 49% 59% The test was compared agai...
by Joost Buijs
Fri Oct 16, 2020 11:11 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ethereal Tuning - Data Dump
Replies: 16
Views: 1264

Re: Ethereal Tuning - Data Dump

Tuning Paper has been pushed to Github (Still a draft, but not finishing it) https://github.com/AndyGrant/Ethereal/blob/master/Tuning.pdf 3x Sets of ~10M positions of <fen> <result> https://drive.google.com/file/d/1Y3haCS_zQH8dfEfKfj1YiWVdSCPYS__e/view?usp=sharing https://drive.google.com/file/d/1P...
by Joost Buijs
Wed Oct 14, 2020 9:37 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: On-line engine blitz tourney October
Replies: 9
Views: 572

On-line engine blitz tourney October

The monthly on-line engine blitz tourney for October will take place on: Saturday October 17, 2:00 PM EST (Boston time), 20:00 CET (Amsterdam time) To connect: winboard -zp -ics -icshost nightmare-chess.nl -icshelper timeseal -fcp ENGINE.exe -fd ENGINEFOLDER -autoKibitz (for UCI engines, add -fUCI )...
by Joost Buijs
Sun Oct 11, 2020 5:03 pm
Forum: Computer Chess Club: General Topics
Topic: New AMD Zen 3 and Ryzen processors
Replies: 34
Views: 2596

Re: New AMD Zen 3 and Ryzen processors

So... any word on the implementation of BMI2, PEXT and PDEP? If it's still as bad as Ryzen 2, these CPU's are out of the question for me. (Also, they are built on an old platform when using AM4; just like Intel 10-xx CPU's built on the X299 platform from 2017.) In the light of NNUE who needs BMI2, ...
by Joost Buijs
Sun Oct 11, 2020 2:08 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Linux friendly engines at all levels
Replies: 60
Views: 7809

Re: Linux friendly engines at all levels

In my engines reading the clock is typically platform dependent. I would not know how to do it in a way that works both on Windows and Linux. Things like shared memory (between processes) also need platform-dependent system calls. With a modern C++ compiler (C++11 and later) you can use the <chrono...
by Joost Buijs
Sun Oct 11, 2020 1:37 pm
Forum: Computer Chess Club: General Topics
Topic: New AMD Zen 3 and Ryzen processors
Replies: 34
Views: 2596

Re: New AMD Zen 3 and Ryzen processors

Don't count on it that Zen 3 will have a better implementation of PEXT/PDEP, besides this omission the Zen 2 is not a bad CPU at all. Intels x299 platform is not bad either, it still has pcie 3.0 instead of 4.0, is this really a problem? Pretty soon new HEDT platforms will all have DDR5 support, do...
by Joost Buijs
Sun Oct 11, 2020 12:50 pm
Forum: Computer Chess Club: General Topics
Topic: New AMD Zen 3 and Ryzen processors
Replies: 34
Views: 2596

Re: New AMD Zen 3 and Ryzen processors

So... any word on the implementation of BMI2, PEXT and PDEP? If it's still as bad as Ryzen 2, these CPU's are out of the question for me. (Also, they are built on an old platform when using AM4; just like Intel 10-xx CPU's built on the X299 platform from 2017.) Don't count on it that Zen 3 will hav...
by Joost Buijs
Sat Oct 10, 2020 10:12 am
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Ethereal Tuning - Data Dump
Replies: 16
Views: 1264

Re: Ethereal Tuning - Data Dump

Thanks for sharing this!