Author: Robert Hyatt
Date: 10:44:21 05/04/04
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On May 04, 2004 at 10:49:42, martin fierz wrote: >On May 04, 2004 at 07:32:01, Rolf Tueschen wrote: > >>On May 04, 2004 at 07:11:15, martin fierz wrote: >> >>>On May 03, 2004 at 22:50:58, Robert Hyatt wrote: >>> >>>>If you recall, I _have_ given some error estimates in the past. Remember the >>>>wildly varying speedup numbers I showed you the first time this issue came up? >>> >>>i recall that you gave wildly varying speedup numbers, and an explanation for >>>why this happens. i don't recall a real error estimate, but that can be either >>>because >>>-> you gave one and i didn't see it >>>-> you gave one, i saw it and forgot >>>-> you didn't give one at all >>> >>>so... what kind of numbers would you give if you were pressed? >> >> >>Isn't it impolite to imply the third option if Bob JUST said that he did give >>some? > >no - asking questions always has to be allowed among scientists. forbidding to >ask questions is the hallmark of religious fanatics and fascists... but i >digress :-) >bob says he gave numbers, which he did. but IIRC, he never gave an error >estimate. so i am allowed to ask for it, and it is not at all impolite to do so. >what he did show is the speedup in about 30 different positions, which could >vary wildly depending on the position. > >i don't know why you think you have to stand up and defend bob every time >somebody says something about him you don't like. just leave that up to him. he >can take it :-) > >cheers > martin I wasn't offended. I hope my answer was ok. This is not an easy question to deal with. IE if you take the standard deviation of a set of random numbers between 0 and N what do you get? That is what the speedup numbers look like for some positions. For others the speedup is a near-perfect constant value. Add some perfect constants plus some randomly distributed values and exactly what does the SD show? :)
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