Message: loss of randomness Not Logged In (login)
 Next-in-Thread Next-in-Thread
 Next-in-Forum Next-in-Forum

Question loss of randomness 

Forum: Run Management
Date: 08 Oct, 2009
From: Nick Laver <Nick Laver>

I have been attempting to run my simulation for 1 million events, however my computer is old and crashes around 75,000... so I have been running it 20 x 50,000 events and collecting the data together in one histogram, this has worked fine upto a point however my simulation has now started returning indentical results for each run, the date and time stamp change on the .data file into which my results are recorded changes and if I change the number of events in my run the number of entry changes in the my .data however they are no longer random... for example if I run 1000 photons followed by 100 photons, the 100 photon file will have only 100 results but these will be identical to the first 100 entries in the 1000 photon file... does anybody know what could be causing this and how to fix it ?

cheers Nick

Inline Depth:
 1 1
 All All
Outline Depth:
 1 1
 2 2
 All All
Add message: (add)

1 Feedback: Re: loss of randomness   (Gumplinger Peter - 08 Oct, 2009)
1 Ok: Re: loss of randomness   (Nick Laver - 09 Oct, 2009)
1 Feedback: Re: loss of randomness   (Gumplinger Peter - 09 Oct, 2009)
... 1 Message(s)
2 Ok: Re: loss of randomness   (Nick Laver - 09 Oct, 2009)
3 Question: Re: loss of randomness   (Eric - 27 Aug, 2010)
1 Feedback: Re: loss of randomness   (Gumplinger Peter - 27 Aug, 2010)
... 1 Message(s)
 Add Message Add Message
to: "loss of randomness"

 Subscribe Subscribe

This site runs SLAC HyperNews version 1.11-slac-98, derived from the original HyperNews


[ Geant 4 Home | Geant 4 HyperNews | Search | Request New Forum | Feedback ]