File for terminal print out information

Asked by Ciara Byers on 2019-09-26

Hi,

I'm having an issue with my own script, it runs Madgraph and then pipes the output (e.g. the values of changed parameters, the cross section + error) to a file that I can then use to create plots of the cross section against the parameters easily.

The pipes have stopped working, I am trying to fix this but I thought there may be a similar file already produced by Madgraph somewhere and that it would be much easier to make use of that if there is.

Is there a file like this? That I could just open with my script and read the values out from?

Best wishes,
Ciara

Question information

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MadGraph5_aMC@NLO Edit question
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Last query:
2019-09-27
Last reply:
2019-09-27

Hi,

You should look at the following two FAQ:
(how to do a parameter scan)
https://answers.launchpad.net/mg5amcnlo/+faq/2735

If you do not do a parameter scan (i.e. also change the run_card) then you should check this link:
https://answers.launchpad.net/mg5amcnlo/+faq/2186

Cheers,

Olivier

Ciara Byers (ciarab93) said : #2

Hi Olivier,

Thanks for getting back to me. I think there is some confusion, I have seen both pages you linked before but my issue is not with creating a parameter scan script.

When you run Madgraph and it prints the cross section and error to the terminal after it completes a run how is that stored? Is there some text file each time that I would be able to read the values out from?

Best wishes,
Ciara

Hi Ciara,

> I think there is some confusion, I have
> seen both pages you linked before but my issue is not with creating a
> parameter scan script.

No confusion here.
In the case of the benchmard scan (first link), a file containing all the cross-sectin and other information is created automatically (as described in the link).

If you need more general scan/method, the second link also explains how to access such information to put those in a file.

Cheers,

Olivier

> On 27 Sep 2019, at 13:13, Ciara Byers <email address hidden> wrote:
>
> Question #684295 on MadGraph5_aMC@NLO changed:
> https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fanswers.launchpad.net%2Fmg5amcnlo%2F%2Bquestion%2F684295&amp;data=02%7C01%7Colivier.mattelaer%40uclouvain.be%7C58cc2aef8c8c416824ab08d7433bb311%7C7ab090d4fa2e4ecfbc7c4127b4d582ec%7C0%7C0%7C637051796479453970&amp;sdata=ztVUuDIpehns%2F5EiB49vkA4%2F4cgu3vg3e1m8KfhfJ%2Fs%3D&amp;reserved=0
>
> Status: Answered => Open
>
> Ciara Byers is still having a problem:
> Hi Olivier,
>
> Thanks for getting back to me. I think there is some confusion, I have
> seen both pages you linked before but my issue is not with creating a
> parameter scan script.
>
> When you run Madgraph and it prints the cross section and error to the
> terminal after it completes a run how is that stored? Is there some text
> file each time that I would be able to read the values out from?
>
> Best wishes,
> Ciara
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

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