get a good random seed for syst

[tobias-pook]

From @padeken on April 23, 2015 12:8

as we discussed phillip

Copied from original issue: Aachen-3A/PxlAnalyzer#13

[tobias-pook]

Hello Phillip, can you add the enhancement or explain what sould be done, so others can solve the issue ?

[pmillet]

the idea is to assign a fixed random number generator seed to and event / object to ensure that running over the same event twice produces the same result

things I currently am not sure about:

• how to get a really 'good' random seed (without introducing a bias)
• at which level to apply (fixed seed for each event or fixed seed for each object in the event)

[tobias-pook]

I recently read about possible caveats if non random seeds are used, see: http://www.pcg-random.org/posts/cpp-seeding-surprises.html