Komodo and SF: small android tourney

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Gurcan Uckardes
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Re: Komodo and SF: small android tourney

Post by Gurcan Uckardes » Thu Jan 08, 2015 4:33 pm

There's a misunderstanding. He used dev version of Stockfish extracted from gplay version of Droidfish it's complex but ok. What i meant before is that Droidfish has also a dev version of itself, which extracts a Stockfish dev version of different size. Wow it was hard to write.
Anyway i checked both 121014 binaries few minutes ago on intel. They run at same 770 knps. I will compare on exynos too.
My blog for Android users: http://chesstroid.blogspot.com

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Laskos
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Full name: Kai Laskos

Re: Komodo and SF: small android tourney

Post by Laskos » Sat Jan 10, 2015 2:12 am

One more test. At 5 sec/move on my Exynos 4 cores, I played a round-robin 150 games total:

Code: Select all

    Program                                Table            Points     ELO

  1 Stockfish 121014 4 cores       :   *    29.5  35.0     64.5/100    70.9 
  2 Stockfish 121014 2 cores       :  20.5   *    31.5     52.0/100     9.8
  3 Stockfish 121014 1 core        :  15.0  18.5   *       33.5/100   -80.7

If taking as a guide this table for doubling nodes:
http://www.talkchess.com/forum/viewtopic.php?t=48733
With 1 core SF having about 200 knodes/sec, with 5 sec/move, then:

Effective Speedup 1->2 cores
2^(90.5/93) = 1.96

Effective Speedup 2->4 cores
2^(61.1/79) = 1.71

Effective Speedup 1->4 cores
1.96*1.71 = 3.35

Very similar to PC i5 or i7 scaling of SF on 1, 2, 4 cores at 5 sec/move.

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