Author: Albert Silver
Date: 13:35:01 12/24/05
Go up one level in this thread
On December 23, 2005 at 15:44:28, Ernst Walet wrote:
>On December 23, 2005 at 15:28:31, Joachim Rang wrote:
>
>>On December 23, 2005 at 13:26:42, Zappa wrote:
>>
>>>So when I went to UIUC as a newly minted World Champion, they were interested
>>>and after some negotiations I managed to procure some time on NCSA's Cobalt
>>>supercomputer, an SGI Altix:
>>>
>>>http://www.ncsa.uiuc.edu/UserInfo/Resources/Hardware/SGIAltix/TechSummary/
>>>
>>>At Paderborn Zappa will run on 128 CPUs as a bit of a warmup; at Turino I hope
>>>to use 512. I haven't really had enough time to seriously optimize Zappa for
>>>this machine, and I have been somewhat disappointed by the Itanium2 CPU, but the
>>>results are still reasonably impressive. For example:
>>>
>>>r1b2r2/p1q1ppk1/6p1/3p3p/7P/5P2/PPPQ2P1/2K1RB1R b - - 0 9
>>>
>>>1... Ra8-b8 2. g2-g4 h5xg4 3. h4-h5 Qc7-b6 4. b2-b3 Qb6-f6 5. Kc1-b1 Rf8-h8 6.
>>>h5-h6 Kg7-g8 7. f3xg4 Bc8xg4 8. h6-h7 Kg8-f8 9. Qd2-h6 Kf8-e8 10. Bf1-d3 e7-e6
>>> = (-0.49) Depth: 17/45 00:03:37.11 5532448kN (25481 KN/s, 3558608
>>>splits, 294631 aborts)
>>>
>>>r1b2rk1/pp3ppp/1nn1p3/q2pP3/2pP1P2/P1P2NPB/2PB3P/R2QK2R w KQ - 0 8
>>>
>>>1. Ke1-g1 Nc6-e7 2. Nf3-h4 Qa5-a4 3. Qd1-b1 Bc8-d7 4. Qb1-b2 Qa4-c6 5. Ra1-b1
>>>Qc6-c7 6. Nh4-g2 Ra8-c8 7. Kg1-h1 Ne7-f5 8. Ng2-e3 Nf5xe3 9. Bd2xe3 Rf8-d8 10.
>>>Rb1-a1
>>> = (0.15) Depth: 20/46 00:04:33.59 7300957kN (26686 KN/s, 6497504
>>>splits, 503423 aborts)
>>>
>>>Single CPU Zappa on the I2 there gets about 300 knps, so that is an nps speedup
>>>of 80-85. I'll probably get a bit less in Paderborn, as this is essentially the
>>>World Champs version of Zappa, and I've been busy de-optimizing it since :)
>>>
>>>This is really only 1-2 ply deeper than my quad, but wait until Turino when I've
>>>had some time to optimize things a bit . . .
>>>
>>>anthony
>>
>>
>>Hi Anthony,
>>
>>so that are the big news you were talking about. I knew already the rumor so I
>>awaited this announcement. Congratulations this is very fascinating. I hope they
>>will give you really enough time to fully utilize all the processors at least in
>>Turino so I hope you can avoid the faith of Vincent in Graz where he had 500
>>CPUs but no real speed-up.
>>
>>It is now clear why Hydra is avoiding to play in Paderborn they probably knew
>>the rumor as well. Hydra is for me the disappointment 2005, there was the boring
>>Match against Adams and basically that's it what you could hear about Hydra this
>>year.
>>
>>From a competitional point of view I'm glad that in the meantime there appeared
>>Rybka so that we don't need to be annoyed about your "unfair" hardware advantage
>>which prevents us again from clinching a title. I suppose even on one processor
>>Rybka will be the co-favourite in Paderborn.
>>
>>regards
>>
>>Joachim
>
>It is my opinion that you are very right about hydra. they have a real chance
>not to win this tournament.
>
>Ernst
Perhaps, but it would still be no less than FASCINATING to see the two possibly
strongest chess-playing entities (presuming Zappa works well enough) play
against each other. What a game for the record books.....
Albert
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