Author: Joachim Rang
Date: 12:28:31 12/23/05
Go up one level in this thread
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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