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Keywords: calculation speed
Forum: Documentation and Examples
Re: Sad Calculation speed in GEANT4 (Yuri Kopatch)
Date: 11 Feb, 2002
From: Makoto Asai <Makoto Asai>

 Performance of Geant4-based application depends on, e.g., cut-off
value you adopted, type of physics process you selected, geometry,
etc. But even if you chose the worst cases, we believe Geant4 cannot
be such slow. For example, BaBar had already generated more than 
250 million events with its full detector setup and had confirmed 
Geant4 is at least as fast as Geant3.
 I suspect you compiled Geant4 (or CLHEP or your own application)
in debug mode. Nothing other than this kind of trivial mistake
can cause such a big performance difference.

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