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Forum: Geometry
Re: Question Geometry segmentation fault core dump
Re: Feedback Re: Geometry segmentation fault core dump (Michael H. Kelsey)
Date: 12 Sep, 2012
From: <matthieu>

Hi Michael,

Sorry that I haven't been able to answer more rapidly. I was involved in a car accident and things got slowed down a lot for me during the past month (a woman did a u-turn when she wasn't allowed, and we rammed into each other pretty hard. At least she wasn't going very fast because of her doing a U-turn. Got my nose broken, lots of scratches on my face, and a concussion. But I'm doing much better now, which allows me to spend more time on GEANT4).

So, I have now been able to try and debugg my simulation. I installed the debugg version of GEANT4.9.5, and it told me in the output that the aluminium material (or element? don't remember...) was not defined. The definition was commented in my code (don't ask me why, dunno!), and after debugging other problems, I think I can now say that my code is working! :) (I still have some minor troubleshooting to do.)

Also thanks for telling me about the units problem, I suspected that I wasn't going about it the right way by assigning the units elsewhere after declaring the length itself. However now that I have changed where I declare the units, the geometry seems to be all messed up (dimensions are increased, which could be because I declare *cm twice, which effectively squares the declared distance). I'll have to check why I get this behavior, probably a bad definition hidden somewhere deep in the jungle.

Thanks again for your help (and quick response), it's greatly appreciated to know we're not all alone out there in the GEANT4 universe. ;)

Matthieu

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