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Question speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows 

Forum: Run Management
Date: 11 May, 2007
From: Victor_Makarov <Victor_Makarov>

Our company has just started to use Geant4 instead of G3. I am a new worker. So I was told to study G4. For a test I was given a tesk similar to TestEm4 (a source of gammas radiating a cube of NaI). So I modified TestEm4 for my task and received histogrammed energy deposition. At the same time that task was solved by our experienced engineer using Geant4. Our results look much alike. The only trouble is that his calculations lasted a few minutes for 1 000 000 events. My time was 1,5 hours!!! I used /tracking/verbose 0. So why did it take G4 on Windows such a long time? I've got two versions:

1) Maybe it's because cygwin makes it slow and using Unix will make it better.

2) Maybe /tracking/verbose 0 is not enough to shorten time by ignoring tracking verbose. Then, what things do I have to comment in sources files to ignore tracking verbose before compiling? Is it possible?

Does anyone have an idea? Thanks in advance.

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1 None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Vladimir IVANTCHENKO - 11 May, 2007)
1 None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Victor - 11 May, 2007)
(_ None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Vladimir IVANTCHENKO - 11 May, 2007)
(_ None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Victor - 11 May, 2007)
2 None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Makoto Asai - 11 May, 2007)
1 None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Mark Donszelmann - 11 May, 2007)
2 None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Victor - 11 May, 2007)
1 None: Re: speed of calculations on Geant4 under Windows/Cygwin vs Geant3 under Windows   (Makoto Asai - 11 May, 2007)
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