what is the rating guess of iphone+Glaurung

[eriq]

I played a few games at 15:00 game and like it's play, seems much stronger than genius.

[Event "?"]
[Site "?"]
[Date "Jun 18, 2009"]
[Round "?"]
[White "Me"]
[Black "Glaurung"]
[Result "1/2-1/2"]

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7.
Nf3 c5 8.
Bb5+ Bd7 9. Qa4 cxd4 10. cxd4 Nc6 11. Be3 a6 12. Bxc6 Bxc6 13. Qc2 Rc8
14. Rc1
O-O 15. O-O Bb5 16. Qxc8 Qxc8 17. Rxc8 Rxc8 18. Rc1 Rxc1+ 19. Bxc1 Bd3
20. e5
Kf8 21. Ne1 Bc4 22. a3 Ke8 23. f4 Kd7 24. Kf2 Ke6 25. Nc2 Bd5 26. Ne3
Be4 27.
g3 b6 28. Ke1 Bf3 29. Kd2 f5 30. Kc3 Be4 31. Kc4 Kd7 32. d5 g5 33. Kd4
gxf4 34.
gxf4 b5 35. Nf1 e6 36. dxe6+ Kxe6 37. Nd2 Bd5 38. Kc5 Bh6 39. Nb1 Be4
40. Nc3
Bf8+ 41. Kb6 Bd3 42. Na2 Bc4 43. Nb4 Bxb4 44. axb4 Kd7 45. Kxa6 Kc6
46. Be3 h6
47. h4 h5 48. Bc5 Kd5 49. Kb6 Bd3 50. Kc7 Ke6 51. Kd8 Be4 52. Ke8 Bf3
53. Kf8
Be4 54. Kg7 Bf3 55. Kg6 Be2 56. Kg5 Bf3
1/2-1/2

[Event "?"]
[Site "?"]
[Date "Jun 18, 2009"]
[Round "?"]
[White "Glaurung"]
[Black "me"]
[Result "1-0"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Nc6 7. Qg4
Kf8 8. Nf3
Nge7 9. Bd2 Bd7 10. Qh5 cxd4 11. cxd4 Nf5 12. Bc3 Qc7 13. O-O-O Rc8
14. Bd3
Nce7 15. Bb4 Kg8 16. Kb1 a5 17. Bc5 b6 18. Bxe7 Nxe7 19. Ng5 Be8 20.
Bxh7+ Kf8
21. Qf3 b5 22. Nxe6#
1-0

[Harvey Williamson]

I think it is clearly stronger than Genius. I would rate it at 2500+ probably a bit more on the new Iphone 3Gs.

[Tord Romstad]

I played a few games at 15:00 game and like it's play, seems much stronger than genius.

Rating numbers are only relative, so it doesn't make much sense to give an exact number. Glaurung on the iPhone 3G is about 100 times slower than on a single core of a 2.8 GHz Core 2 Duo, which corresponds to a rating difference of about 400 Elo points, assuming that doubling the CPU speed increases the strength by 60 points. The new iPhone 3 GS has a much faster CPU, but I have no benchmarks and don't know how big the difference is when running Glaurung.

Unfortunately, Glaurung's architecture is not very well suited for the ARM CPU in the iPhone, but it still seems to be strong enough for most people. For those who want something much stronger, I can only advice being patient: I have some pretty big plans for future versions.

And yes, even the current version should be much stronger than Genius.

Tord

[Mark]

I played a few games at 15:00 game and like it's play, seems much stronger than genius.

Rating numbers are only relative, so it doesn't make much sense to give an exact number. Glaurung on the iPhone 3G is about 100 times slower than on a single core of a 2.8 GHz Core 2 Duo, which corresponds to a rating difference of about 400 Elo points, assuming that doubling the CPU speed increases the strength by 60 points. The new iPhone 3 GS has a much faster CPU, but I have no benchmarks and don't know how big the difference is when running Glaurung.

Unfortunately, Glaurung's architecture is not very well suited for the ARM CPU in the iPhone, but it still seems to be strong enough for most people. For those who want something much stronger, I can only advice being patient: I have some pretty big plans for future versions.

And yes, even the current version should be much stronger than Genius.

Tord

I have the new iPhone 3GS and would be glad to run a benchmark. Just let me know what position, settings, time, etc.

Any hints as to the big plans for future versions??

Mark

[royb]

I played a few games at 15:00 game and like it's play, seems much stronger than genius.

Rating numbers are only relative, so it doesn't make much sense to give an exact number. Glaurung on the iPhone 3G is about 100 times slower than on a single core of a 2.8 GHz Core 2 Duo, which corresponds to a rating difference of about 400 Elo points, assuming that doubling the CPU speed increases the strength by 60 points. The new iPhone 3 GS has a much faster CPU, but I have no benchmarks and don't know how big the difference is when running Glaurung.

Unfortunately, Glaurung's architecture is not very well suited for the ARM CPU in the iPhone, but it still seems to be strong enough for most people. For those who want something much stronger, I can only advice being patient: I have some pretty big plans for future versions.

And yes, even the current version should be much stronger than Genius.

Tord

Tord -- you have big plans for Glaurung in general or Glaurung specifically on the iPhone?

Thanks,

Roy

[eriq]

Thx for such a beast, I love it's style on active.

[Werewolf]

100x slower? Is it really that much??

The iphone 3G runs at 400Mhz and the 3Gs at 600Mhz and Shredder on the iphone gets to depth 10 in no time.

[Tord Romstad]

I have the new iPhone 3GS and would be glad to run a benchmark. Just let me know what position, settings, time, etc.

Let's wait until the next public version, or the next version I send out to you beta testers (yes, I know, it's been a very long time now, but I haven't forgotten you: Development has just been really slow the last half year). Right now, benchmarking is a little bit impractical, because the engine version I run on my phone is different from the one found in the public iPhone Glaurung.

Any hints as to the big plans for future versions??

No, not yet. I want to surprise the world.

Tord -- you have big plans for Glaurung in general or Glaurung specifically on the iPhone?

On the iPhone specifically. Stockfish is the future of Glaurung on desktop computers, at least until I start doing a complete rewrite (which won't happen any time soon).

Thx for such a beast, I love it's style on active.

Thanks, I'm glad you like it! I'm quite happy with the style, too. It's strange that the style seems much more aggressive and enterprising on the iPhone than on a desktop computer, even when the engine code is identical. It seems like the CPU speed has some influence on the style of play. I'm not sure why.

100x slower? Is it really that much??

For Glaurung 2, it really is that much. It depends a lot on the program. I benchmarked a lot of open source programs on the iPhone, and the slowdown factor compared to my 2.8 GHz Core 2 Duo varied between (if I recall correctly) 35 and 120. Phalanx did best, and Glaurung was among the worst. In general, bitboard programs seemed to run very slowly on the iPhone (which isn't really a big surprise).

Tord

[Werewolf]

How much slower is the iphone 3gs (600Mhz) than a PIII @ 600Mhz?