Author: Peter Fendrich
Date: 02:46:54 08/18/03
Go up one level in this thread
On August 18, 2003 at 04:44:10, Sune Fischer wrote: >On August 17, 2003 at 23:16:19, Uri Blass wrote: > >>>If you ever do a parallel search, forget about determinism. If you don't, >>>forget about winning games. :) >> >>one cpu has chances not only to win games but also to win tournaments. >> >>A lot of programs won tournaments inspite of having only one cpu. > >I think you take his words too literally, of course you can win games even if >you enforce determanism. > >I think SMP is ~50 Elo just sitting there for the taking. You can go elsewhere >and find 50 Elo (perhaps) but why bother, why not take 'em where you see 'em? Well Sune, if it was that easy to just take 'em... Starting with SMP complicates your program by a factor x and introduces new fresh bugs. That goes for every little improvement and change you are going to do. You first have to think about how it affects your SMP logic even if it's "foolproof" written with good design. You always have to keep it ín mind and your debugging is even harder than before. More complicated and more bug intensive = 50 ELO. Hmmm I think I'll wait. If it was >51 I would go for it ... :-) /Peter >>The king did it in the dutch championship when more than one cpu of some >>opponents did not help them > >Was that the one where it drew against Shredder and lost against Fritz? >Perhaps with a dual it could have won the tournament with an even bigger margin >:) > >>Same for Shredder in the past when Ferret,Junior,Fritz had more than one cpu. > >I'm sure if it had been a longer tournament Shredder would have had some >problems against equal opponents on faster hardware. >In short tournaments anything can happen of course, perhaps Shredder just had a >better opening book? > >>When computers become faster I expect the advantage of 2 cpus against 1 cpu to >>be less important and things like better order of moves may be more important. > >Maybe, or maybe not. Perhaps duals are just the beginning, quads will one day >get cheap too, I hope :) > >>It is also possible to be deterministic with more than one cpu. >>You may lose some speed relative to being not deterministic but still do >>significantly better than one cpu. >> >>Uri > >If those ~50 Elo shrink to ~20 because of the restictions, then I'd begin to >question whether it was worth it. > >-S.
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