Author: George Sobala
Date: 15:11:47 01/13/06
Go up one level in this thread
On January 13, 2006 at 11:46:19, Robert Hyatt wrote: >On January 13, 2006 at 03:52:34, Gian-Carlo Pascutto wrote: > >>On January 13, 2006 at 01:07:52, Aloisio Ponti Lopes wrote: >> >>>Did someone test this? >>> >>>A. Ponti >> >>I saw CEGT is now testing dual programs and had Shredder 9.12x64 SMP on top of >>the ratingslist (but with few games). >> >>I hope they can more as it will be interesting to see the actual ELO gain from >>SMP. >> >>-- >>GCP > > >I don't see why it would be any different at all, than just comparing to a CPU >that is X times faster, since that is all SMP does. I'd expect my dual 2.8 to >be about as fast as a single 5ghz processor, assuming everything else (memory, >cache, processor internals, etc) are identical... I'm surprised you say that with your experience with Deep Sjeng. In my experience with Deep Shredder on 1-4 processors, the behaviour and performance of the multiprocessor program cannot be predicted or simply extrapolated from the behaviour of the program running as a single thread. In test positions, the 4-processor version may "find the move" anywhere between x1 and x20 as fast as a single thread, and then come up with completely different times when run on the same position again. 4x2.5GHz do not equal 1x10GHz (or 1x8Ghz!).
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.