The value for lhapdf in the current configuration does not correspond to a valid executable.

Hi,

Did you set the path to the lhapdf-config file or to the directory that contains it?
You should do the first and not the second.

Cheers,

Olivier
> On 18 Jan 2017, at 18:13, amir <email address hidden> wrote:
>
> New question #443813 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/443813
>
> Dear MadGraph developers
>
> I've installed MG5_aMC_v2_5_2 and after installation I tried to connect lhapdf to MG5 but after compilation I've got :
> The value for lhapdf in the current configuration does not correspond to a valid executable.
> I'm sure there is an executable lhapdf-config file but yet I have problem with that:
> save configuration file to /home/joachim/Desktop/MG5_aMC_v2_5_2/bin/an/Cards/amcatnlo_configuration.txt
> INFO: The value for lhapdf in the current configuration does not correspond to a valid executable.
> Please set it correctly either in input/mg5_configuration or with "set lhapdf /path/to/lhapdf-config" and regenrate the process.
> To avoid regeneration, edit the /home/joachim/Desktop/MG5_aMC_v2_5_2/bin/an/Cards/amcatnlo_configuration.txt file.
> Note that you can still compile and run aMC@NLO with the built-in PDFs.
> so can you help me in this?
>
> Best
> Amir
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Hi,

Did you set the path to the lhapdf-config file or to the directory that contains it?
You should do the first and not the second.

Cheers,

Olivier
> On 18 Jan 2017, at 18:13, amir <email address hidden> wrote:
>
> New question #443813 on MadGraph5_aMC@NLO:
> https://answers.launchpad.net/mg5amcnlo/+question/443813
>
> Dear MadGraph developers
>
> I've installed MG5_aMC_v2_5_2 and after installation I tried to connect lhapdf to MG5 but after compilation I've got :
> The value for lhapdf in the current configuration does not correspond to a valid executable.
> I'm sure there is an executable lhapdf-config file but yet I have problem with that:
> save configuration file to /home/joachim/Desktop/MG5_aMC_v2_5_2/bin/an/Cards/amcatnlo_configuration.txt
> INFO: The value for lhapdf in the current configuration does not correspond to a valid executable.
> Please set it correctly either in input/mg5_configuration or with "set lhapdf /path/to/lhapdf-config" and regenrate the process.
> To avoid regeneration, edit the /home/joachim/Desktop/MG5_aMC_v2_5_2/bin/an/Cards/amcatnlo_configuration.txt file.
> Note that you can still compile and run aMC@NLO with the built-in PDFs.
> so can you help me in this?
>
> Best
> Amir
>
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Hi olivier

I set the path exactly to lhapdf-config file. the path works fine in MG5 v2_3_2_2. I even tried the lhapdf installation with mg5 either but the outcome was same.

Cheers,
Amir

Ok,

Can you look at the file input/mg5_configuration.txt and check that it contains the path that you expect?
You can force it there if this is is not set to the correct one.

Cheers,

Olivier
> On 18 Jan 2017, at 20:58, amir <email address hidden> wrote:
>
> Question #443813 on MadGraph5_aMC@NLO changed:
> https://answers.launchpad.net/mg5amcnlo/+question/443813
>
> Status: Answered => Open
>
> amir is still having a problem:
> Hi olivier
>
> I set the path exactly to lhapdf-config file. the path works fine in MG5
> v2_3_2_2. I even tried the lhapdf installation with mg5 either but the
> outcome was same.
>
> Cheers,
> Amir
>
> --
> You received this question notification because you are an answer
> contact for MadGraph5_aMC@NLO.

Hello

Really sorry for the late answer. I've checked the mg5_configuration.txt and path to lhapdf is also correct

#! lhapdf-config
#! If None: try to find one available on the system
lhapdf = /Users/Joachim/Desktop/deps/lhapdf/bin/lhapdf-config #

Cheers,
Amir

Dear Amir,

What happens when you run the following command?
/Users/Joachim/Desktop/deps/lhapdf/bin/lhapdf-config --version

We run that command and looks like that it returns an error. Can you check?

Cheers,

Olivier

Dear Olivier

The output is
Amirs-MacBook-Pro:bin Joachim$ lhapdf-config --version
6.1.6

Cheers,
Amir

you type
lhapdf-config --version
and not
/Users/Joachim/Desktop/deps/lhapdf/bin/lhapdf-config --version

Can you check the second (just to be 100% sure)

Cheers,

Olivier

Amirs-MacBook-Pro:~ Joachim$ /Users/Joachim/Desktop/deps/lhapdf/bin/lhapdf-config --version
6.1.6

I've checked this and I've got the version

Cheers,
Amir

Hi,

Ok, clearly when called by madgraph this command fails.
I can see multiple reason
1) a problem related with the SIP of Mac which prevent lhapdf-config to find some of the required library
2) MG5 do not use that path for lhapdf

If you run
./bin/mg5_aMC
Then type “display options” did you get the correct path for lhapdf?

For a check of the first(and second)
You can modify the file
madgraph/iolibs/export_fks.py

Around line 733
You should have
        devnull = os.open(os.devnull, os.O_RDWR)
        try:
            res = misc.call([self.options['lhapdf'], '--version'], \
                                 stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        except Exception:
            res = 1
        if res != 0:
            logger.info<http://logger.info>('The value for lhapdf in the current configuration does not ' + \
                        'correspond to a valid executable.\nPlease set it correctly either in ' + \
                        'input/mg5_configuration or with "set lhapdf /path/to/lhapdf-config" ' + \
                        'and regenrate the process. \nTo avoid regeneration, edit the ' + \
                        ('%s/Cards/amcatnlo_configuration.txt file.\n' % self.dir_path ) + \
                        'Note that you can still compile and run aMC@NLO with the built-in PDFs\n’)

You can replace this by
        devnull = os.open(os.devnull, os.O_RDWR)
        Logger.info<http://Logger.info>("LHAPDF_CONFIG call via %s —version :",self.options['lhapdf'] )
        try:
            res = misc.call([self.options['lhapdf'], '--version'])
        except Exception, error:
    print "PYTHON error", str(error)
            res = 1
        if res != 0:
            logger.info<http://logger.info>('The value for lhapdf in the current configuration does not ' + \
                        'correspond to a valid executable.\nPlease set it correctly either in ' + \
                        'input/mg5_configuration or with "set lhapdf /path/to/lhapdf-config" ' + \
                        'and regenrate the process. \nTo avoid regeneration, edit the ' + \
                        ('%s/Cards/amcatnlo_configuration.txt file.\n' % self.dir_path ) + \
                        'Note that you can still compile and run aMC@NLO with the built-in PDFs\n')

This should provide you more information about what the problem is.

Cheers,

Olivier

On 20 Mar 2017, at 10:43, amir <<email address hidden><mailto:<email address hidden>>> wrote:

Question #443813 on MadGraph5_aMC@NLO changed:
https://answers.launchpad.net/mg5amcnlo/+question/443813

amir posted a new comment:
Amirs-MacBook-Pro:~ Joachim$ /Users/Joachim/Desktop/deps/lhapdf/bin/lhapdf-config --version
6.1.6

I've checked this and I've got the version

Cheers,
Amir

--
You received this question notification because you are an answer
contact for MadGraph5_aMC@NLO.

Hi,

Ok, clearly when called by madgraph this command fails.
I can see multiple reason
1) a problem related with the SIP of Mac which prevent lhapdf-config to find some of the required library
2) MG5 do not use that path for lhapdf

If you run
./bin/mg5_aMC
Then type “display options” did you get the correct path for lhapdf?

For a check of the first(and second)
You can modify the file
madgraph/iolibs/export_fks.py

Around line 733
You should have
        devnull = os.open(os.devnull, os.O_RDWR)
        try:
            res = misc.call([self.options['lhapdf'], '--version'], \
                                 stdout=subprocess.PIPE, stderr=subprocess.PIPE)
        except Exception:
            res = 1
        if res != 0:
            logger.info<http://logger.info/>('The value for lhapdf in the current configuration does not ' + \
                        'correspond to a valid executable.\nPlease set it correctly either in ' + \
                        'input/mg5_configuration or with "set lhapdf /path/to/lhapdf-config" ' + \
                        'and regenrate the process. \nTo avoid regeneration, edit the ' + \
                        ('%s/Cards/amcatnlo_configuration.txt file.\n' % self.dir_path ) + \
                        'Note that you can still compile and run aMC@NLO with the built-in PDFs\n’)

You can replace this by
        devnull = os.open(os.devnull, os.O_RDWR)
        Logger.info<http://logger.info/>("LHAPDF_CONFIG call via %s —version :",self.options['lhapdf'] )
        try:
            res = misc.call([self.options['lhapdf'], '--version'])
        except Exception, error:
    print "PYTHON error", str(error)
            res = 1
        if res != 0:
            logger.info<http://logger.info/>('The value for lhapdf in the current configuration does not ' + \
                        'correspond to a valid executable.\nPlease set it correctly either in ' + \
                        'input/mg5_configuration or with "set lhapdf /path/to/lhapdf-config" ' + \
                        'and regenrate the process. \nTo avoid regeneration, edit the ' + \
                        ('%s/Cards/amcatnlo_configuration.txt file.\n' % self.dir_path ) + \
                        'Note that you can still compile and run aMC@NLO with the built-in PDFs\n')

This should provide you more information about what the problem is.

Cheers,

Olivier

On 20 Mar 2017, at 10:43, amir <<email address hidden><mailto:<email address hidden>>> wrote:

Question #443813 on MadGraph5_aMC@NLO changed:
https://answers.launchpad.net/mg5amcnlo/+question/443813

amir posted a new comment:
Amirs-MacBook-Pro:~ Joachim$ /Users/Joachim/Desktop/deps/lhapdf/bin/lhapdf-config --version
6.1.6

I've checked this and I've got the version

Cheers,
Amir

--
You received this question notification because you are an answer
contact for MadGraph5_aMC@NLO.

Dear Olivier

I've checked export_fks.py and in line 734 you should change self.option to mg5option. cause of this line we have the error just like
AttributeError : 'ProcessOptimizedExporterFortranFKS' object has no attribute 'options'
so after determine the changes the problem solved

Cheers,
Amir