Author: Mridul Muralidharan
Date: 12:51:28 12/23/05
Go up one level in this thread
Not sure where you got the 'no real speedup' bit about diep ... his logs were avalable : did you really check them ? Mridul 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
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