Author: Bo Persson
Date: 04:16:09 08/01/03
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On July 31, 2003 at 11:09:19, Robert Hyatt wrote: >On July 31, 2003 at 05:22:05, Vincent Lejeune wrote: > >> >>http://www.theinquirer.net/?article=10785 >> >>... >>Single CPU+Hyperthreading P4c-2.6 800 Mhz FSB: >>One job at a time 82.20 seconds >>Two jobs at a time 138.21 seconds >>Scaled 1.18 times. >> >>Dual p4-3.0/533 Mhz FSB (fastest dual p4 made) >>One job at a time 84.98 seconds >>Two jobs at a time 155.92 seconds >>Scaled 1.09 times. > >Something is wrong there. > >This means that (a) whomever ran the benchmark didn't know what he was >doing or (b) he didn't have both cpus running. Or, (c) his intension was to measure memory througput, which might be important to him. Otherwise (a). :-) "He has compared single to dual Opteron systems by looking at these SPEC results 14.1 SpecFP 2000 and 26.7 SpecFP 2000 here, which he says shows a a 1.89 speedup, on what he describes as a fairly memory bandwidth intensive benchmark." Bo Persson bop2@telia.com
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