21-25 May 2012
New York City, NY, USA
US/Eastern timezone

Toolkit for data reduction to tuples for the ATLAS experiment

24 May 2012, 13:30
4h 45m
Rosenthal Pavilion (10th floor) (Kimmel Center)

Rosenthal Pavilion (10th floor)

Kimmel Center

Poster Event Processing (track 2) Poster Session


Scott Snyder (Brookhaven National Laboratory (US))


The final step in a HEP data-processing chain is usually to reduce the data to a `tuple' form which can be efficiently read by interactive analysis tools such as ROOT. Often, this is implemented independently by each group analyzing the data, leading to duplicated effort and needless divergence in the format of the reduced data. ATLAS has implemented a common toolkit for performing this processing step. By using tools from this package, physics analysis groups can produce tuples customized for a particular analysis but which are still consistent in format and vocabulary with those produced by other physics groups. The package is designed so that almost all the code is independent of the specific form used to store the tuple. The code that does depend on this is grouped into a set of small backend packages. While the ROOT backend is the most used, backends also exist for HDF5 and for specialized databases. By now, the majority of ATLAS analyses rely on this package, and it is an important contributor to the ability of ATLAS to rapidly analyze physics data.

Primary author

Scott Snyder (Brookhaven National Laboratory (US))


Attila Krasznahorkay (New York University (US)) Collaboration Atlas (Atlas)

Presentation Materials