Frequently Asked Questions

Is GridWay and DRM4G's source code available?

• Yes, you can download it from ​here.

How can I compile it?

• Yes, you can follow the instructions detailed here.

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 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:

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.