How to read bench There are many manners to publish benchs : – Tables – Graphics The goal is to say « it is a good parallel method, see my benchs » but it is often easy to arrange the presentation of the graphics to hide the problems Using graphics (from the simple to hide to the hardest) : 1) Increase size of data and see for some number of processors 2) Increase number of processors to a typical size of data 3) Acceleration, i.e, Time(seq)/Time(par) 4) Efficienty, i.e, Acceleration/Number of processors 5) Increase number of processors and size of the data
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