Author: Robert Hyatt
Date: 13:09:46 03/12/01
Go up one level in this thread
On March 12, 2001 at 15:29:15, Uri Blass wrote: >On March 12, 2001 at 13:57:32, Robert Hyatt wrote: > >>On March 12, 2001 at 13:49:41, Uri Blass wrote: >> >>>On March 12, 2001 at 13:15:08, Tanya Deborah wrote: >>> >>>> >>>> >>>>Hi Guys! >>>> >>>>I bought Deep junior6 3 days ago, and now i am interested to know if Deep J6 is >>>>stronger than Junior6. I mean, running the 2 engines in one single processor. >>> >>>The programmer Amir Ban did not claim that Deep Junior is stronger on a dingle >>>processor and I know that Deep Junior is sligtly slower than Junior6 on a single >>>processor. >>> >>>Uri >> >> >>While I didn't write the code, "slightly slower" should mean 0.1% slower at >>most. I don't think you can tell the difference with that small of a speed >>degradation. > > >I remember that I read that it is not the case for Deep Junior and it is about >10% slower for one processor. > >Uri OK. I can't imagine how a program could be written to behave like that, but I assume it is possible since you saw it somewhere... In the case of Crafty, .1% is the right number. In the "main search loop" there is a single test/branch that is executed needlessly, once per node, for the SMP version when there is no extra processors being used.
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.