CERN Analysis Preservation & REANA Workshop

Agenda

See official indico page here.
Date of the workshop: 20 Jun 2018

Summary

The presentations, demos and discussions showcased the strategies and developments regarding preservation and reusable research. Whilst the LHC experiments have varying approaches, e.g. in terms of automation and knowledge preservation, the overall goals and ambitions appeared congruent with the service development presented for CAP and REANA (and many related tools notably).

Further work

ALICE:

• capturing and preservation of Lego trains
• enable preservation of analysis macros (typically fitting and plotting)

ATLAS:

• enable automated link with GLANCE and Gitlab
• collect more analysis examples

CMS:

• bring the demonstrations and discussions to the CMS groups
• find adoption scheme for analysis preservation

LHCb:

• collect more analysis examples
• agree on adoption scheme and next steps

The presentations by the representatives of the LHC collaborations are available on Indico. Focusing on the demos, the following progress or feedback should be noted.

The CAP form

• CAP uses CERN OAuth and standard e-group setup
• Connection to several collaborations' databases was implemented to support the submission process by autocompleting of fields
• Analysis sharing is enabled with flexible permissions to enable collaborative editing/reading of an analysis
• File and repository upload is implemented
• The analysis schemas (JSON) are flexible to handle a wide range of different analyses

CAP search

• Intelligent search is implemented to look for any kind of metadata or files that have been submitted to CAP (examples vary from specific datasets to data P_T cuts etc.)

CAP-client

• CAP-client is created to make analysis submission as easy as possible
• Suggestion to extend functionality

REANA

• A reana-client is implemented to support the communication with the service
• Support for multiple computational workflow needed

CAP-REANA bridge:

• Prototype of the link between the services has been demonstrated
• A selection of preserved analysis can now be instantiated through “Rerun on REANA” button on CAP
• Parameters can be selected when starting the analysis