MadGraph5_aMC@NLO

Problem in pythia-pgs installation MGv2.6.4 in mac

Asked by SUBHASISH BEHERA

Dear Team member,

I am unable to install pythia-pgs. The following is the error :

Warning: Rank mismatch in argument 'p' at (1) (rank-1 and scalar) [-Wargument-mismatch]
./src/pgslib.f:5267:33:

       del_phi = v4phi(p) - v4phi(q)
                                 1
Error: Actual argument contains too few elements for dummy argument 'p' (3/4) at (1)
./src/pgslib.f:5267:22:

       del_phi = v4phi(p) - v4phi(q)
                      1
Error: Actual argument contains too few elements for dummy argument 'p' (3/4) at (1)
make[2]: *** [lib/libpgslib.a] Error 1
make[1]: *** [libpgs] Error 2
make: *** [all] Error 2
Error detected in "install pythia-pgs"

Is it due to Mac OSX or something else ?
or gcc ?

Thanks,
Subhasish

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Olivier Mattelaer
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Best Olivier Mattelaer (olivier-mattelaer) said : 		#1

Hi,

If you have gcc8, it is likely related to that.

Now pythia-pgs is not supported anymore. (both py6 and pgs are not supported by their author since at least 5 years --likely more than 10 for pgs--". So it does not make that much sense to support this interface.

Cheers,

Olivier

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SUBHASISH BEHERA (subhparasara) said : 		#2

Thanks Olivier Mattelaer, that solved my question.

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Arpon Paul (arponpaul) said : 		#3

Hi
Could you please let me know how you solved the problem? I am having the same problem in Ubuntu 19.10

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Olivier Mattelaer (olivier-mattelaer) said : 		#4

Hi,

If you want to use such outdated code, you would need to use an outdated tools (and if needed OS).
Probably the easiest would be to create a virtual machine with an old version of Ubuntu (13.10?)

Cheers,

Olivier

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SUBHASISH BEHERA (subhparasara) said : 		#5

Dear Aropn,

It was a linking problem with GCC installation. But the following must be
taken into consideration, in case this problem arises again:
1. Check, whether you have compiled MG5 with different GCC other than your
current version (which is used for Pythia-PGS installation)
2. Try to make another download of MG5 and then install Pythia-PGS again
with the current GCC (some time useful). Try with MG5-v2.4.3 as you want
Pythia-PGS, precisely it was working smoothly.

Please let me know if you have any problem in doing that.

On Wed, Mar 25, 2020 at 10:13 AM Arpon Paul <
<email address hidden>> wrote:

> Your question #677417 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/677417
>
> Arpon Paul posted a new comment:
> Hi
> Could you please let me know how you solved the problem? I am having the
> same problem in Ubuntu 19.10
>
> --
> You received this question notification because you asked the question.
>

--

Thanks,
Subhasish