[Gate-users] DoseActor parallelization

Wed May 2 16:36:59 CEST 2018

Dear Sarrut,

Can we assume the dose is linear to scale?

My question is because I would like to simulate the accumulated dose due to
a radiotracer decaying along the time.

Regards,

I

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*Nícollas Gonçalves Cavedini*
Undergraduate Student -  Medical Physics (PUCRS)
Lattes: http://lattes.cnpq.br/7248406497106855
Contact: +55 (51) 99922-9957
Porto Alegre, Brazil.

2018-04-30 2:16 GMT-03:00 David Sarrut <David.Sarrut at creatis.insa-lyon.fr>:

> Hello,
>
> you should simulate much less particles (say, few hours of computing time)
> then scale the results ...
>
> David
> PS: please keep messages to the mailing list
>
> On Fri, Apr 27, 2018 at 6:38 PM Nicollas Goncalves Cavedini <
> nicollas.cavedini at acad.pucrs.br> wrote:
>
>> Dear Sarrut,
>> I'm going to explain better my work.
>> I would like to calculate the dose maps (in Gy) in cylinders around a
>> 99mTc source during a long period of time (30minutes), considering the
>> decay along this period.
>> However, it is impossible to  simulate this activity  and time, because
>> the simulation will take years in our cluster (40G RAM x 2 clusters)...
>> My script is attached to this message.
>> Our configuration is a set of tubes (7cm height and 1.5 cm diameter)
>> filled with a polymer, around a point source  (1 Ci of activity) in
>> different distances.
>> Our proposal is to compare the simulation with an experimental setting.
>> I appreciate a lot your attention and help.
>> Regards,
>>
>>
>>
>> ‌
>> [image: Mailtrack]
>> <https://mailtrack.io?utm_source=gmail&utm_medium=signature&utm_campaign=signaturevirality3&> Remetente
>> notificado por
>> Mailtrack
>> <https://mailtrack.io?utm_source=gmail&utm_medium=signature&utm_campaign=signaturevirality3&>
>>
>>
>>
>> *Nícollas Gonçalves Cavedini*
>> Undergraduate Student -  Medical Physics (PUCRS)
>> Lattes: http://lattes.cnpq.br/7248406497106855
>> Contact: +55 (51) 99922-9957
>> Porto Alegre, Brazil.
>>
>>
>>
>> 2018-04-27 2:17 GMT-03:00 David Sarrut <David.Sarrut at creatis.insa-lyon.fr
>> >:
>>
>>>
>>>
>>> On Thu, Apr 26, 2018 at 3:20 PM, Nicollas Goncalves Cavedini <
>>> nicollas.cavedini at acad.pucrs.br> wrote:
>>>
>>>> Dear David,
>>>> I thought i could only do this for images. For example, if I merge five
>>>> dose maps with 0.2 Ci will I have a dose map of 1 Ci ?
>>>>
>>>
>>> yes ! btw is it advised use Gy no Ci ;)
>>>
>>> David
>>>
>>>
>>>> Best regards,
>>>>
>>>>
>>>>
>>>> ‌
>>>>
>>>>
>>>>
>>>> *Nícollas Gonçalves Cavedini*
>>>> Undergraduate Student -  Medical Physics (PUCRS)
>>>> Lattes: http://lattes.cnpq.br/7248406497106855
>>>> Contact: +55 (51) 99922-9957
>>>> Porto Alegre, Brazil.
>>>>
>>>>
>>>>
>>>> 2018-04-26 3:05 GMT-03:00 David Sarrut <David.Sarrut at creatis.insa-
>>>> lyon.fr>:
>>>>
>>>>> Hello,
>>>>>
>>>>> no parallelization specific to one actor, but you can always launch
>>>>> the same Gate simulation in parallel provided that you don't use the same
>>>>> random seed number (use: /gate/random/setEngineSeed auto). You will need to
>>>>> merge all outputs at the end of all simulations.
>>>>>
>>>>> Sincerely,
>>>>> David
>>>>>
>>>>>
>>>>> On Wed, Apr 25, 2018 at 3:25 PM, Nicollas Goncalves Cavedini <
>>>>> nicollas.cavedini at acad.pucrs.br> wrote:
>>>>>
>>>>>> Dear Gate users!
>>>>>> I would like to ask if someone knows if there's anyway to parallelize
>>>>>> the DoseActor in GATE v7.1. I want to simulate 99m-Tc sources with 1Ci of
>>>>>> activity on the university cluster but the time of simulations it is too
>>>>>> long.
>>>>>> I appreciate any help in advance!
>>>>>> Regards,
>>>>>>
>>>>>>
>>>>>> *Nícollas Gonçalves Cavedini*
>>>>>> Undergraduate Student -  Medical Physics (PUCRS)
>>>>>> Lattes: http://lattes.cnpq.br/7248406497106855
>>>>>> Contact: +55 (51) 99922-9957
>>>>>> Porto Alegre, Brazil.
>>>>>>
>>>>>>
>>>>>> ‌
>>>>>>
>>>>>> _______________________________________________
>>>>>> Gate-users mailing list
>>>>>> Gate-users at lists.opengatecollaboration.org
>>>>>> http://lists.opengatecollaboration.org/mailman/listinfo/gate-users
>>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> David Sarrut, Phd
>>>>> Directeur de recherche CNRS
>>>>> CREATIS, UMR CNRS 5220, Inserm U1206
>>>>> Centre de lutte contre le cancer Léon Bérard
>>>>> 28 rue Laënnec
>>>>> <https://maps.google.com/?q=28+rue+La%C3%ABnnec&entry=gmail&source=g>,
>>>>> 69373 Lyon cedex 08
>>>>> Tel : 04 78 78 51 51 / 06 74 72 05 42
>>>>> http://www.creatis.insa-lyon.fr/~dsarrut
>>>>> _________________________________
>>>>>  "2 + 2 = 5,  for extremely large values of 2"
>>>>> _________________________________
>>>>>
>>>>
>>>>
>>>
>>>
>>> --
>>> David Sarrut, Phd
>>> Directeur de recherche CNRS
>>> CREATIS, UMR CNRS 5220, Inserm U1206
>>> Centre de lutte contre le cancer Léon Bérard
>>> 28 rue Laënnec
>>> <https://maps.google.com/?q=28+rue+La%C3%ABnnec&entry=gmail&source=g>,
>>> 69373 Lyon cedex 08
>>> Tel : 04 78 78 51 51 / 06 74 72 05 42
>>> http://www.creatis.insa-lyon.fr/~dsarrut
>>> _________________________________
>>>  "2 + 2 = 5,  for extremely large values of 2"
>>> _________________________________
>>>
>>
>>
>
> --
> David Sarrut, Phd
> Directeur de recherche CNRS
> CREATIS, UMR CNRS 5220, Inserm U1206
> Centre de lutte contre le cancer Léon Bérard
> 28 rue Laënnec
> <https://maps.google.com/?q=28+rue+La%C3%ABnnec&entry=gmail&source=g>,
> 69373 Lyon cedex 08
> Tel : 04 78 78 51 51 / 06 74 72 05 42
> http://www.creatis.insa-lyon.fr/~dsarrut
> _________________________________
>  "2 + 2 = 5,  for extremely large values of 2"
> _________________________________
>
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