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Question Bus Error, Mac OSX 

Keywords: Bus Error
Forum: Run Management
Date: 30 Aug, 2006
From: Paul <Paul>

Hello, I am fairly new to geant (about 8 months working with it). I am running geant4.7.p01 on 
Mac OSX version 10.4.7 I have managed to set up a two detector geometry using liquid 
scintillator and have set up hadronic and electromagnetic physics lists (LHEP_PRECO_HP). I've 
managed to run some sanity checks and it seems like everything is working as it should. Recently 
it came time for me to do some actual simulations so I fired in a monoenergetic pencil beam of 
2 MeV neutrons using the GPS package. After about 2500 events the entire program crashed with
 a bus error, no other explanation was given. The run was done in a bash script and ran twice 
more, once for a very thin detector and once for a very thick detector. On the thin detector I 
recieved the same bus error message at 2800 interactions, on the thicker detector run it ran to 
completetion at 30,000 events. This leads me to believe the bus error is somehow related to my 
geometry but I cannot figure out how. Since I will need to run at 500,000 to 1,000,000 events 
soon need to sort this out, the sooner the better. Any help would be greatly appreciated and if
 you need any more information about my program in order to help let me know and I'll see what
 I can do. Thanks in advance.

Cheers, Paul

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