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Question Is random engine used in AnaEx01? 

Forum: Documentation and Examples
Date: 26 Jan, 2010
From: Neoh <Neoh>


I'm just beginning to learn about random engine and I have two questions. I'm running AnaEx01. I saw the line 67 of

CLHEP::HepRandom::setTheEngine(new CLHEP::RanecuEngine);

but i did not see where is it called in other cc files. If I comment out this line the program gives the same result, seems like it runs just fine without it.

My first question is: Is the random engine being called in AnaEx01?

The other place where I notice randomization is used is in GeneratePrimaries() in, I guess maybe random engine is used here. I change rndmFlag("off") to rndmFlag("on"), then recompile everything. The results for mean and rms is different this time, but if I rerun it will give identical results again.

My second question is: If I turn on rndmFlags, Should the program behave like this, where results will be different upon first compilation but identical results after that in every run?



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1 Idea: Re: Is random engine used in AnaEx01?   (Neoh - 27 Jan, 2010)
1 Disagree: Re: Is random engine used in AnaEx01?   (Neoh - 28 Jan, 2010)
2 More: Re: Is random engine used in AnaEx01?   (Gabriele Cosmo - 29 Jan, 2010)
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