Search found 2315 matches

by mar
Thu Apr 15, 2021 6:13 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Split Index Super Set Yielding (SISSY) Bitboards
Replies: 74
Views: 10414

Re: Split Index Super Set Yielding (SISSY) Bitboards

Mike Sherwin wrote:
Wed Apr 14, 2021 2:59 am
YES,,,YES YES YES I dyxjubf did it!!!
congratulations, Michael. did you measure a performance gain for the bishop SISSY?
how big are the tables now?
by mar
Thu Apr 15, 2021 6:11 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: PST-only Evaluation for MinimalChess 0.4
Replies: 21
Views: 557

Re: PST-only Evaluation for MinimalChess 0.4

Well, that is PeSTO itself, of course. And it has no Pawn evaluator. Just PST, as the name suggests. Then that is absolutely amazing! I would never have imagined that an engine with no more than static PST's could ever attain anywhere near a 3100 elo. :? well, 3100 elo but 4CPU - I get (most do in ...
by mar
Mon Apr 12, 2021 2:48 pm
Forum: Computer Chess Club: Programming and Technical Discussions
Topic: Split Index Super Set Yielding (SISSY) Bitboards
Replies: 74
Views: 10414

Re: Split Index Super Set Yielding (SISSY) Bitboards

hi Michael,

I don't remember as it was several months ago. I believe I did nothing special but simply used a bigger LUT to process two ranks at once?
by mar
Sat Apr 10, 2021 3:33 pm
Forum: Computer Chess Club: General Topics
Topic: M1 Apple Silicon for Chess?
Replies: 365
Views: 39575

Re: M1 Apple Silicon for Chess?

not that I plan to waste my M1 on chess, but I might That sums it up, I suppose. The thread is "M1 Apple Silicon for chess". I have no personal grudge against any HW. I just think it is borderline fanboyism to compare HW and then don't optimize benches based on the HW used on more than one end. Of ...
by mar
Sat Apr 10, 2021 9:35 am
Forum: Computer Chess Club: General Topics
Topic: M1 Apple Silicon for Chess?
Replies: 365
Views: 39575

Re: M1 Apple Silicon for Chess?

Even according to your own benchmarks on your engine the inexpensive 2700x beats a spanking new M1.. So what is really to be impressed with?.. Yes.. Its a more power-consuming Desktop CPU... But its older and the more relevant comparison today is for example with a 5xxxU 15W AMD mobile CPU... are y...
by mar
Fri Apr 09, 2021 6:22 pm
Forum: Computer Chess Club: General Topics
Topic: M1 Apple Silicon for Chess?
Replies: 365
Views: 39575

Re: M1 Apple Silicon for Chess?

SMP results for my engine 19'725'019 nps, 2700X 16 threads 13'884'314 nps, 2700X 8 threads 17'497'848 nps, M1 8 threads perf diff (left is faster): desktop 16T vs desktop 8T: 1.42x (pretty good for hyperthreading) desktop 16T vs M1: 1.13x M1 vs desktop 8T: 1.26x so even the MT performance is not tha...
by mar
Fri Apr 09, 2021 5:53 pm
Forum: Computer Chess Club: General Topics
Topic: Can somebody with 6 men EGTB show how to win with White?
Replies: 13
Views: 502

Re: Can somebody with 6 men EGTB show how to win with White?

Ethereal playing White Versus Igel playing with Black show an evaluation of 0.01 and Igel is showing an evaluation of 0.00. I am NOT using any chess Opening Nor EGTB for this test, Just pure engine evaluation where the two Engines have to show how good is there Opening knowledge and their endgame K...
by mar
Fri Apr 09, 2021 5:50 pm
Forum: Computer Chess Club: General Topics
Topic: M1 Apple Silicon for Chess?
Replies: 365
Views: 39575

Re: M1 Apple Silicon for Chess?

You don't care about the generation of HW and nm-size.. but you care enough only to compare single-core performance only?.. the M1 a) costs you more than an old 2018 2700x and b) the 2700x will still beat it for chess-engine benchmarks if you choose to use the full-chip. Per core benches are really...
by mar
Thu Apr 08, 2021 6:37 pm
Forum: Computer Chess Club: General Topics
Topic: M1 Apple Silicon for Chess?
Replies: 365
Views: 39575

Re: M1 Apple Silicon for Chess?

Believing that there is some magical advantage of ARM architecture compared to x86 is pure BS. Architecturally I believe AMD's design is much more advanced. If they were on the same process node they'd be far superior in terms of processing power/W that today is probably equal. why bs? 2x more regs...
by mar
Thu Apr 08, 2021 5:26 pm
Forum: Computer Chess Club: General Topics
Topic: M1 Apple Silicon for Chess?
Replies: 365
Views: 39575

Re: M1 Apple Silicon for Chess?

I'm also impressed with the performance of Rosetta 2, because most of the apps run nearly at full speed, which is something, I predicted a factor of 2+ slower because of CPU emulation, but I was wrong. That's because Rosetta 2 is not an emulation, but a translation. Means, this is done once at inst...