And the kilogram is losing weight... http://www.sciencedaily.com/releases/2008/02/080228120943.htm
The other reason for the change is that the molecular bumpiness of the meter rod makes it imprecise as well, thus a new standard is needed that does not grow and shrink with temperature, does not bend in gravity, and does not have ragged edges... On Oct 7, 2009, at 8:23 PM, Raistmer wrote: > > ----- Original Message ----- > From: "Lynn W. Taylor" <[email protected]> > To: "Martin" <[email protected]>; "BOINC dev" > <[email protected]> > Sent: Thursday, October 08, 2009 2:30 AM > Subject: Re: [boinc_dev] [boinc_alpha] Card Gflops in BOINC 6.10 > > >> This will be my final post on the subject. >> >> To take the clock analogy one step further. >> >> You're saying that your cesium clock is much better than the cheezy >> $1 >> westclox wind up I got at the local bargain shop. >> >> ... and I'm saying that the cobblestone standard explicitly calls for >> the use of a wind-up clock. >> >> I agree with everything you've said. I agree that Whetstones and >> Dhrystones are not the best predictors of performance. >> >> But the standard says "you put the dhrystone number for your machine >> here, and you put the whetstone number for your machine here, and you >> put the number of CPU seconds here, and that's your credit, in >> cobblestones." > > Well, what we have in real world: > > Meter was defined as length of very particular etalon rod. The > definition > was - the length of this very rod IS the 1 meter. > Of course there were some deviations in this length (it will depend > from > temperature for example). > Now we define 1 meter as 1/299792458-th of length that light passes in > vacuum per 1 second. > (and second defined via number of periods of particular spectral > line). > > We CHANGED definition of meter ! > What remained the same ? > The purpose of this unit. Length unit is needed to measure distances. > Now, with new meter definition, we can measure distances more > precisely. > > IMO the same situation with cobblestones. Theire definition SHOULD BE > CHANGED to ensure more precise crediting. > > _______________________________________________ > boinc_dev mailing list > [email protected] > http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev > To unsubscribe, visit the above URL and > (near bottom of page) enter your email address. _______________________________________________ boinc_dev mailing list [email protected] http://lists.ssl.berkeley.edu/mailman/listinfo/boinc_dev To unsubscribe, visit the above URL and (near bottom of page) enter your email address.
