How to make SF10 work for Arena 1.1 on the Raspberry Pi?

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Raphexon
Posts: 115
Joined: Sun Mar 17, 2019 11:00 am
Full name: Henk Drost

Re: How to make SF10 work for Arena 1.1 on the Raspberry Pi?

Post by Raphexon » Sun Mar 24, 2019 9:24 pm

Nordlandia wrote:
Sun Mar 24, 2019 7:59 pm
How about the first version of pi?

Version 1.0 - 1core

Still no chance?
Roughly 20 kn/s according the poster below.
Post was in August 2012, so sf_2.2.2 which has a CCRL of 3113 (SF10 is 3548), it was competitive with Anmon and SOS 5.1 on an i5-2405S CPU @ 2.50GHz. (Both engines can only use 1 core) Both are roughly 2550 CCRL elo (40/4).

https://www.raspberrypi.org/forums/view ... hp?t=15663

http://lefounumerique.clicforum.fr/t120 ... rry-Pi.htm

Fritz 8 was beating top humans on a Centrino 1.7 ghz.

https://en.wikipedia.org/wiki/Human%E2% ... 80%932005)

On passmark it has a single thread rating of 521, the i5 has a single thread rating of 1614.

https://www.cpubenchmark.net/cpu.php?cp ... Hz&id=1159

https://www.cpubenchmark.net/cpu.php?cp ... GHz&id=795

So I'd wager Anmon and Sos on the i5 are roughly equal to Fritz 8 on a 2004 laptop.

So I think Magnus could win against SF 2.2 on the first Raspberry Pi.

SF10 and the latest dev version should smash every human ever, even with just 20 kn/s.

MikeB
Posts: 3546
Joined: Thu Mar 09, 2006 5:34 am
Location: Pen Argyl, Pennsylvania

Re: How to make SF10 work for Arena 1.1 on the Raspberry Pi?

Post by MikeB » Wed Mar 27, 2019 1:57 am

Nordlandia wrote:
Sun Mar 24, 2019 7:59 pm
How about the first version of pi?

Version 1.0 - 1core

Still no chance?
It would depend on the nps - current SF , 10 or higher is playing at solid GM strength at around 25000 NPS. How do I know this - well I don't "know" it - its conjecture in part on my 30 years of computer chess experience and with extensive testing with SF at different NPS rate. SF is different from a lot of engines is it scales much better art the lower NPS rate and then once it gets to Elo 2900 or 3000 , it behaves more like other engines. It's not a steady rise in Elo as speed increases ( say 50 Elo increase represents doubling of Elo - for SF at very low nps ( anywhere under under 10,000 nps) , it may be more like 75 Elo. GMs will struggle with SF mightily over 50,000 nps. Single Core 3B+ Pi's do around 250K nps, but with Pis it's fairly easy to lower the Mhz, so maybe an early Pi zero could be throttle down to 50K nps - I'm not sure - but that would be the target and then recalibrate as necessary. I'm not an expert- just casual anecdotal observations while I was implementing Play By Elo ( UCI Limit Strength in McCain). I have McCain play at ~55000 nps at the 2700 ELo level - my guess is that it's probably50 Elo harder than 2700 - but part of that is that I wanted to make beating a certain level a stretch and not easier than expected. My 2800 level is seems to be broken - will have to a look at it. Elo level 2750 works - its at about 75000 nps. My guess is that it at least 50 Elo underrated , maybe 100 Elo underrated.

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