We continue to review all events currently planned for the next sixty days and organizers will be notified if their event must be canceled, postponed, or held remotely. Please, check back on Indico during this time for updates regarding your meeting specifics.
As DOE O 142.3A, Unclassified Foreign Visits and Assignments Program (FVA) applies not only to physical access to DOE sites, technologies, and equipment, but also information, all remote events hosted by Fermilab must comply with FVA requirements. This includes participant registration and agenda review. Please contact Melissa Ormond, FVA Manager, with any questions.


ZOOM meetings Lab policy: You absolutely must not post Zoom meeting IDs on any public website unless you set a password to protect the meeting/event. Of course, do not post the password on any public website, either.
For details please refer to the news article https://news.fnal.gov/2020/05/security-guidelines-for-zoom-meetings-2/ Zoom information should be either given on email request or stored on a SharePoint page behind SSO".
Do NOT post the zoom information in the field 'Venue/Location' since it will show in the weekly Calendar even if the event is protected!


Indico search will be reestablished in the next version upgrade of the software: https://getindico.io/roadmap/


This search is only for public events. Restricted events are not available.


10-11 August 2020
US/Central timezone

Measuring Python adoption by CMS physicists using GitHub API

Aug 11, 2020, 10:30 AM
Lightning Round Community Feedback


Jim Pivarski (Fermilab)


In the pipeline from detector to published physics results, the last step, "end-user analysis," is the most diverse. It can even be hard to discover what tools are being used, since the work is highly decentralized among students and postdocs, many of whom are working from their home institutes (or their homes).

However, GitHub offers a window into CMS physicists' analysis tool preferences. For the past 7 years, CMSSW has been hosted on GitHub, and GitHub's API allows us to query the public repositories of users who have forked CMSSW, a sample dominated by CMS physicists and consisting of 19,400 user-created (non-fork) repositories.

In these 7 years, we see a clear reduction in the use of C++ and increase in the use of Python and Jupyter notebooks. 2019 marks the first year in which CMS physicists have created more Python repositories (excluding Jupyter) than C or C++. Finally, we can also search the code in these repositories for substrings that quantify the adoption of specific physics, plotting, and machine learning packages.

Understanding how physicists do their work can help us make more informed decisions about software development, maintenance, and training.

Primary author

Jim Pivarski (Fermilab)

Presentation Materials