CPU usage

Asked by Sebastian Urrutia-Quiroga on 2018-08-24

Hi all,
I'm running some simulations in a 16-core machine, but apparently I'm doing something wrong because the CPU usage indicates:

Linux 3.10.0-693.21.1.el7.x86_64 08/24/2018 _x86_64_ (16 CPU)

03:04:41 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
03:04:41 PM all 2.03 0.00 0.30 0.01 0.00 0.00 0.00 0.00 0.00 97.66

Is this normal? Otherwise, any idea about how to solve it?

Best,
Sebastian

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2018-08-24
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2018-08-24

I forgot to mention that I'm using the options run_mode=2 & nb_cores=16

Hi,

Not all part of the code are able to use more than one core.
And depending of the process that you run, we might not be able to saturate the 16 cores even if the code can use multi-core for that part of the code.

Cheers,

Olivier

> On 24 Aug 2018, at 23:26, Sebastian Urrutia-Quiroga <email address hidden> wrote:
>
> Question #672682 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/672682
>
> Sebastian Urrutia-Quiroga posted a new comment:
> I forgot to mention that I'm using the options run_mode=2 & nb_cores=16
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Hi Olivier,
Thank you for your quick response. I'm generating the process p p > e- e- j j in a LNV model, so I don know if this calculation can saturate the 16 cores.

Here is a more detailed version of the CPU usage:
09:06:52 PM CPU %usr %nice %sys %iowait %irq %soft %steal %guest %gnice %idle
09:06:52 PM all 2.07 0.00 0.30 0.01 0.00 0.00 0.00 0.00 0.00 97.62
09:06:52 PM 0 1.91 0.00 0.04 0.01 0.00 0.01 0.00 0.00 0.00 98.03
09:06:52 PM 1 2.71 0.00 1.26 0.01 0.00 0.00 0.00 0.00 0.00 96.02
09:06:52 PM 2 3.94 0.00 0.34 0.02 0.00 0.00 0.00 0.00 0.00 95.70
09:06:52 PM 3 2.27 0.00 0.09 0.01 0.00 0.00 0.00 0.00 0.00 97.63
09:06:52 PM 4 1.36 0.00 0.09 0.01 0.00 0.00 0.00 0.00 0.00 98.53
09:06:52 PM 5 1.34 0.00 0.11 0.02 0.00 0.00 0.00 0.00 0.00 98.52
09:06:52 PM 6 1.47 0.00 0.07 0.01 0.00 0.00 0.00 0.00 0.00 98.44
09:06:52 PM 7 1.20 0.00 0.05 0.01 0.00 0.00 0.00 0.00 0.00 98.74
09:06:52 PM 8 2.13 0.00 0.11 0.01 0.00 0.00 0.00 0.00 0.00 97.75
09:06:52 PM 9 3.04 0.00 1.53 0.01 0.00 0.00 0.00 0.00 0.00 95.42
09:06:52 PM 10 2.20 0.00 0.39 0.01 0.00 0.00 0.00 0.00 0.00 97.40
09:06:52 PM 11 2.32 0.00 0.15 0.01 0.00 0.00 0.00 0.00 0.00 97.53
09:06:52 PM 12 1.85 0.00 0.15 0.01 0.00 0.00 0.00 0.00 0.00 97.99
09:06:52 PM 13 1.86 0.00 0.20 0.01 0.00 0.00 0.00 0.00 0.00 97.94
09:06:52 PM 14 1.74 0.00 0.13 0.01 0.00 0.00 0.00 0.00 0.00 98.12
09:06:52 PM 15 1.75 0.00 0.11 0.01 0.00 0.00 0.00 0.00 0.00 98.13

Thank you so much,
Sebastian

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