[Gate-users] problem with random number seed?

[Thomas DESCHLER]

Hello,

I had the same seed problem with Gate when my Geant4 was compiled with
GEANT4_BUILD_MULTITHREADED at ON.

Can you check the compilation options of your Geant4 ?

I hope this will help,

Best regards,

Thomas Deschler
Le 29 janv. 2016 3:47 PM, "hediye acun" <acunhediye at yahoo.com> a écrit :

> Hello All,
>
> I have Gate "develop" version and at the same time geant4.10.1.0 and
> root_v5.34.32 on the GPU. My operating system is Linux Mint 17.2 .
>
> I am triying to simulate a linac head to get Phase Space of photons. Just
> for an example I run Gate for a basic geometry which include only electron
> beam, target filter and Phase space plane inside a linac geometry. When I
> run Gate two or more times for same "number of primaries" I got the exactly
> the same Phase Space distributions (histogram of Ekine completely
> identical). But I am using "/gate/random/setEngineSeed auto" command and
> according to the documentation that should give me the different seed every
> time when I run it. I would expect some random differences between PhS's
> from different runs.
>
> Does anyone have any idea about this issue? Thank you in advance.
>
> Hediye Acun
>
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