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None problems with specific particle and geometry 

Forum: Event and Track Management
Date: 18 Apr, 2008
From: Jasmine Ma <Jasmine Ma>

Hi- I'm having trouble debugging the following error: I have a simulation that works on average about half of the time. When it doesnt work, it returns the error

#1 0x006c8ff3 in __waitpid_nocancel () from /lib/tls/libc.so.6

Cannot access memory at address 0x1 WARNING - Attempt to delete the physical volume store while geometry closed ! WARNING - Attempt to delete the logical volume store while geometry closed ! WARNING - Attempt to delete the solid store while geometry closed !

 for each run where it doesnt work, I've narrowed it down to one particle (the same particle in an ntuple always causes the problem)
 Kinematically, the offending particles do not seem to have anything in common, and as far as I can tell,
 the problem takes place at different geometric locations.

I've run the program with many points of output. and as far as I can tell, it must be happening at the end
 of or after "StackingAction"  but before the next "SteppingAction"

It seems to be random, except for the fact that the -same- particle always causes the problem.

I'm not sure what to do next, because the amount of output I'm getting tracking this thing is getting excessive. Are the errors about the geometry indicative of anything other than the obvious?

Thanks

Jasmine

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