= Frequently Asked Questions =

== Is !GridWay and DRM4G's source code available? ==

* Yes, you can download it from [[https://pypi.python.org/pypi/drm4g|here]].

== How can I compile it? ==
* Yes, you can follow the instructions detailed [[https://meteo.unican.es/trac/wiki/DRM4G/Installation#Withoutpip|here]].

{{{#!comment
== Can I use DRM4G if my computing resource has a special requirement? ==

* Yes, you can send us a [/newticket?component=DRM4G&cc=antonio ticket] with your requirements, and we will provide you a DRM4G plugin for your resource.
}}}



== Can I submit MPI jobs by using DRM4G? ==

* Yes, there are two variables: `NP` and `PPN` which help you to do that. 

* You can find an example of how to do it [[https://meteo.unican.es/trac/wiki/DRM4G1/DRM4GTutorial#MPIJob|here]].



== How many jobs can I submit? ==

* You can submit 200,000 jobs. 



== Pip won't install drm4g ==
* Try updating pip:
  `sudo pip install --upgrade pip`
 * And remember that if you're not adding any installation options or doing it in a virtual environment you need to run `sudo pip install drm4g`.



== When installing with pip, I get a SNIMissingWarning or !InsecurePlatformWarning ==
* The problems you're having are related with your versions of python and your virtual environment. They can be ignored since they don't affect the installation process.

* One solution for solving the SNIMissingWarning and !InsecurePlatformWarning warnings is to upgrade to a more recent version of Python.
 * If for any reason you are not able to upgrade, you can also run `pip install 'requests[security]'` as explained ​here.

\\
= Common Errors =
== When running `drm4g start` this error occurs:
{{{#!sh
Error! Lock file $DRM4G_DIR/.drm4g/var/.lock exists.
}}}
 * Running `drm4g stop` before starting DRM4G should resolve the issue.
 * This happens when `DRM4G` hasn't been properly closed.