# Number of events: run_card vs html

Hi,

What is the difference between the number of events that I have in my run_card (10 000) from the number of events display on the html page?

Best regards,

Francisco

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Olivier Mattelaer
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 Revision history for this message Olivier Mattelaer (olivier-mattelaer) said on 2023-02-07: #1

I guess the answer to your question is (they are are many number printed on the html page, and many html page)
the run_card is the number that you request, while the one printed on the html/screen/log/... is the number that we have achieved to generated. This means that one can be smaller if the efficiency of that process is too small and close to zero if you have divergency within the code.

Cheers,

Olivier

 Revision history for this message Francisco Casalinho (francisco27) said on 2023-02-08: #2

When I said "number of events displayed on the html page" I was referer to the number of events in the "Results and Events Database" Browser page.
In the results.html file, we have also a number called "Events(K)". What does this number mean?

So if I want to calculate the integrated luminosity in my process, I need to use the number of events that MadGraph achieves to generate in the "Results and Events" Browser page?

Thanks,

Francisco

 Revision history for this message Olivier Mattelaer (olivier-mattelaer) said on 2023-02-08: #3

Hi,

> In the results.html file, we have also a number called "Events(K)". What does this number mean?

Those are the number of times that we did evaluate the matrix-element.
(i.e. the number of phase-space points passing the cuts and the number of weighted events used for the generation of the number of unweighted events given in the next column). Those number are given per channel of integration and we do have for each channel the associated luminosity.

> So if I want to calculate the integrated luminosity in my process, I
> need to use the number of events that MadGraph achieves to generate in
> the "Results and Events" Browser page?

Yes correct

Olivier

> On 8 Feb 2023, at 16:35, Francisco Casalinho <email address hidden> wrote:
>
> Question #704992 on MadGraph5_aMC@NLO changed:
>
> Francisco Casalinho posted a new comment:
> When I said "number of events displayed on the html page" I was referer to the number of events in the "Results and Events Database" Browser page.
> In the results.html file, we have also a number called "Events(K)". What does this number mean?
>
> So if I want to calculate the integrated luminosity in my process, I
> need to use the number of events that MadGraph achieves to generate in
> the "Results and Events" Browser page?
>
> Thanks,
>
> Francisco
>
> --