Author: Robert Hyatt
Date: 09:49:44 09/04/02
Go up one level in this thread
On September 04, 2002 at 12:06:05, Tony Werten wrote: >On September 04, 2002 at 11:47:39, Tony Werten wrote: > >>On September 04, 2002 at 10:33:41, Robert Hyatt wrote: >> >>>On September 04, 2002 at 03:31:19, Tony Werten wrote: >>> >>>>On September 03, 2002 at 18:03:14, Gian-Carlo Pascutto wrote: >>>> >>>>>However reasonable your explanations may be, the gist of your DTS article >>>>>and the most important thing for comparison were the speedup numbers. After >>>>>what we discovered and what you just posted, it is clear that they are >>>>>based on very shaky foundations. >>>> >>>>I must be missing something. The only thing I see wrong with the speedup numbers >>>>is the way they are calculated. >>>> >>>>Since time was measured in miliseconds ie 3 significant numbers after the dot, >>>>the speedup should have been given in 3 significant numbers behind the dot as >>>>well. >>> >>> >>> >>>Just a note. I am not sure where this "millisecond" stuff comes from. But in >>>Cray Blitz, we only kept time to the nearest second, as produced by the Cray >>>library system call. >> >>So the speedup was calculated a different way and from that speedup the >>solutiontime was calculated. Unfortunately the solutiontime was in >>milliseconds,suggesting a high precision and the speedup factor only in tenths >>giving the strang looking "precision" of 2.000 or 1.900 for anyone calculating >>it the normal way from the tables. >> >>OK at least I understand what it's all about now. Not sure if I care though. > > >What I mean ( haven't read the paper yet ) is that I'm not sure if there is a >difference between measuring the searchtimes and calculating the speedup and >measuring the speedup and calculating the searchtimes. > >As long as the measuring is done correctly. > >Tony > that would be my point also. Ditto for nodes.
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