Re: [fluka-discuss]: parallel jobs problems

From: Francesco Cerutti <Francesco.Cerutti_at_cern.ch>
Date: Mon, 19 Mar 2018 21:54:21 +0100

Thanks Marius, there is not much to add to what you correctly pointed out.
The RANDOMIZe card is meant not to have identical (hence useless to
production purposes) runs, thanks to different random number
initialisations (see the respective manual page, note 5).

The number of primary histories, impacting the CPU time as well as the
statistical quality, is set in the START card.

Best regards

Francesco

**************************************************
Francesco Cerutti
CERN-EN/STI
CH-1211 Geneva 23
Switzerland
tel. +41 22 7678962
fax +41 22 7668854

On Mon, 19 Mar 2018, Marius Arenz wrote:

> Hello --.
>
> If you use Flair: In the Run tab in the left column, there is a field
> "spawn". Enter a number there and you will create this number of parallel
> runs. Flair will create a corresponding number of input files for you.
> Regarding the random seed:
> I think you misunderstood something there, random does not produce more
> primaries. It takes care that not all of your runs are the same. Maybe
> somebody more experienced can elaborate on this?
>
> Best regards
> Marius
>
> On 19.03.2018 15:20, 梅志远 wrote:
>> Hello to everyone. I have a problem with parallel computation. I
>> know that the card RANDOMIZ is used for the parallel jobs. But I
>> attempted to change the Seed to 3E8 or 5E8 or 8E8, and so on. The
>> cost of time is not different with using the default of Seed.
>>
>> I wonder how can I use the parallel computation with flair and
>> fluka.
>>
>> Thank you very much for your kind help!
>>
>>
>>
>>
>> Best regards
>>
>>
>>
>> --
>>
>>
>> 姓名:梅志远
>>
>> 职务:博士研究生
>>
>> 单位:华中科技大学电气学院应用电磁工程研究所 地址:华中科技大学西九楼113室
>> 电话:15527017168 邮
>> 箱:meizhiyuan_at_hust.edu.cn
>>
>
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Received on Mon Mar 19 2018 - 23:15:28 CET

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