Author: Robert Hyatt
Date: 15:00:12 09/04/02
Go up one level in this thread
On September 04, 2002 at 17:07:42, martin fierz wrote: > >this is not the point. of course you are correct about the "it doesn't really >matter" part, as long as you are not interested in knowing if your averge >speedup is 1.83 or 2.0 for 2 processors. i don't understand that you are not >interested in that, but that is another question... As I said, the speedup is not exactly an "exact" number, period. It is really a "range" such as 11.1 +/- X, where X is not well-defined. But X is definitely larger than .1, which makes that level of precision not so interesting... That was the only reason... > if you have an average >speedup of 1.83 and report it as 2.0, then that is really stupid, and claiming >more than the program really can do, and i can understand if somebody is upset >by that. >the error you make gets smaller as the speedup gets larger, so for the large >processor numbers it really doesnt matter any more. > >the real point is that there is *no way* you could have measured those search >times, and that if you were to claim you really did measure them, you would be a >proven fraud. but, as you say, you measured the speedup to 1 digit, and not the >real time, then it all makes sense - except that you did something you shouldnt >really do... > >aloha > martin
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