Author: Eugene Nalimov
Date: 17:45:33 08/22/02
Go up one level in this thread
Several days ago I run Crafty on 3 different dual systems. I measured only nps reported by 'bench', not time to solve something, so resulting numbers show how efficient dual support in the system is implemented. PIII/800: 1.9x P4/2GHz: 1.86x Athlon/1.67 1.4x I.e. Athlon was much faster than P4 using single CPU, but became slower when both CPUs were used. Thanks, Eugene On August 22, 2002 at 20:15:15, Robert Hyatt wrote: >On August 22, 2002 at 18:04:21, Rajen Gupta wrote: > >>On August 22, 2002 at 17:16:18, Robert Hyatt wrote: >> >>>On August 22, 2002 at 15:18:37, Gian-Carlo Pascutto wrote: >>> >>>>On August 22, 2002 at 15:17:55, Rajen Gupta wrote: >>>> >>>>>thanks: sorry for the obvious quesion but how fast is a 4 way compared to a >>>>>single or a 2 way(i assume a 2 way is about 1.75 times a single) >>>> >>>>4 way is about 3 times faster than a single >>>> >>>>-- >>>>GCP >>> >>> >>>I don't think he was talking about chess. He was talking about number-crunching >>>in general I assume. So the right answer is nearly 1.7 for a dual, nearly 4.0 >>>for a quad, and nearly 6.8 for an 8-way box. >> >>sorry: i was actually talking about chess >> >>rajen > > >In that case the answer varies significantly. 3.0 (as GCP gave) is a good >rule of thumb. But then the other numbers I gave are too high. IE a dual >is about 1.7x faster than a single before considering chess. It would be >about 1.7x faster playing chess if memory was not an issue. As a result, >a dual may well be slower than 1.7x for chess, as it depends on the memory >system. dual servers may well have interleaving, while dual desktop machines >typically don't to keep cost down.
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.