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Forum: Installation and Configuration
Re: Question Geant4 performance on Windows and on Linux (Nikita)
Re: None Re: Geant4 performance on Windows and on Linux (John Allison)
Date: 02 Jun, 2010
From: Nikita <Nikita>

On Wed, 02 Jun 2010 11:07:51 GMT, John Allison wrote:
> Can I ask how you are making the performance measurement? In particular,
> you should disable vis:
> 
>   /vis/disable
> 
> Please let me know if this makes any difference.
> 

I run my application with batch.mac file with the following content:

/control/verbose 2 /control/saveHistory /run/verbose 2 /run/beamOn 1000000

At the end of execution the time of computation is shown:

Run Summary
  Number of events processed : 1000000
  User=289.45s Real=297.61s Sys=0.4s

Adding /vis/disable didn't influence the result.

By the way, I remembered one more question that I want to ask. When I execute the app on Windows I have:

Run Summary
  Number of events processed : 1000000
  User=239.969s Real=0s Sys=0.031s

Here I always have Real=0s, and when I execute on Linux, I have both User and Real timings non-zeros. Can you clarify, what is the meaning of these values?

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1 None: Re: Geant4 performance on Windows and on Linux   (John Allison - 02 Jun, 2010)
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