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Forum: Physics List
Re: None Missing G4Data files (Frank Gaede)
Date: 22 Nov, 2005
From: <vnivanch@mail.cern.ch>

On Mon, 21 Nov 2005, Frank Gaede wrote:

> *** Discussion title: Physics List
> Email replies to PublicHyperNews@slac.stanford.edu must include:
>   In-Reply-To: <"/phys-list/191"@geant4-hn.slac.stanford.edu>
>   Subject: ...change this to be about your reply.
> 
> Recently the DESY ILC group has started to submit geant4 based
> simulation jobs for detector optimization to the grid. In doing so we
> realized that geant4 based programs using a physiscs list that comes
> with geant4 will run without the G4Data files (G4LEVELGAMMADATA,
> G4LEDATA,...) actually beeing visible (mounted) without any complaint or
> warning. I would consider this behaviour dangerous as it is not so
> straight forward how one can ensure that the cross section data actually
> has been used in the program in a distributed computing environment. The
> least one expects is a warning like "G4LEVELGAMMADATA points to an
> empty/unreadable directory" or similar. Is this a bug or a feature that
> has some justification ?
> 

Hello Frank,

If these files are needed but variables are not defined, then the 
Exception should take place. At the other hand, it cost nothing to define 
these variables, if data files are already installed. 

VI

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1 None: Re: Missing G4Data files   (Frank Gaede - 23 Nov, 2005)
(_ None: Re: Missing G4Data files   (vnivanch@mail.cern.ch - 23 Nov, 2005)
(_ None: Re: Missing G4Data files   (Frank Gaede - 23 Nov, 2005)
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