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Idea Re: Random Number Generation 

Forum: Run Management
Re: None Random Number Generation (Chelsea Bartram)
Date: 25 May, 2015
From: Tom Roberts <Tom Roberts>

See http://hypernews.slac.stanford.edu/HyperNews/geant4/get/runmanage/264/1.html

I seed the random number generator with the event number at the start of each event. That way I don't need to keep track of seeds, and can still re-run an event (e.g. after identifying an outlier in a histogram, and then re-running it with visualization on). Note this has to happen inside GeneratePrimaries() because BeginOfEventAction() is too late.

The default generator (HepJamesRandom) guarantees good, independent performance for event numbers from 0 to 900,000,000.

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