[Gate-users] problem with random number seed?

[surabhi balagopal nair]

Hello All,

I have a related doubt. I want to run GATE on a cluster but was afraid the
seeds might get different for different threads.  Are you saying that by
default the seed is the same when GATE is run on a cluster ? If it requires
any command line to fix the seed, kindly let me know.

Thanks
On 30 Jan 2016 04:39, "Hediye Acun" <acunhediye at yahoo.com> wrote:

> Thank you Thomas. I will check it up.
> Best regards.
>
> Hediye Acun
>
> 29 Oca 2016 tarihinde 22:59 saatinde, Thomas DESCHLER <
> Thomas.Deschler at iphc.cnrs.fr> şunları yazdı:
>
> 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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>
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