[Gate-users] Help : NumberOfPrimaries

[Khalid Hussain]

Dear Ibrahim,

As advised by the Gunjan, you can run for the low number of primaries and
repeat the simulation for different seeds to generate different patterns
and accumulate the results to get your required number of primaries in
final output.

I hope it will help you.

If anyone has a different opinion then, please comment



On Mon, Oct 25, 2021 at 12:40 PM Gunjan Kayal <gunjan.kayal at inserm.fr>
wrote:

> Hi Ibrahim
>
> The maximum number of primaries you can have is 2^(32-1) because Gate
> deals with 32-bit variable range (~2.1 billion).
> In case you want to run higher number of primaries, you can split your
> simulations and then merge them later on.
> I guess there are some available tools (in GateContrib/GateTools) to do
> the splitting and merging.
>
> Hope this helps.
>
> Regards.
> Gunjan
>
>
>
>
> ----------------------------------------------------------------------------------------------
> Gunjan Kayal | PhD Scholar
>
> Team 15: Multi-scale dosimetry for radiotherapy optimization
> Inserm/Université Paul Sabatier/CNRS | Centre de Recherches en
> Cancérologie de Toulouse (CRCT <https://www.crct-inserm.fr/>)
> 2 Avenue Hubert Curien | 31037 Toulouse
>
> Research on Dosimetric Applications (RDA)
> SCK CEN | Belgian Nuclear Research Centre (SCK CEN <http://www.sckcen.be>)
> Boeretang 200 | 2400 Mol, Belgium
>
>
>
>
>  |
>
> On 23 Oct 2021, at 17:00, IBRAHIM AIT OUAGGOU <
> ibrahim.aitouaggou at ump.ac.ma> wrote:
>
> Hello everyone
>
> I m asking for help, I m a beginner in using Gate and use it right now to
> simulate pdd and profils of photon beams in radiotherapy,  the problem I
> had is in the definition of the number of primaries,  every time I want
> make it bigger the simulation crashes, right now I couldn't exceed 2
> billion particle and once I try to use a bigger number it crashes without
> knowing the causes.
> I ll be grateful if I receive advice from you to remedy this problem
>
> Best regards
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