Please visit Jefferson Lab Event Policies and Guidance before planning your next event:
May 8 – 12, 2023
Norfolk Waterside Marriott
US/Eastern timezone

The Rubin Observatory’s Legacy Survey of Space and Time DP0.2 processing campaign at CC-IN2P3

May 11, 2023, 2:15 PM
Marriott Ballroom II-III (Norfolk Waterside Marriott)

Marriott Ballroom II-III

Norfolk Waterside Marriott

235 East Main Street Norfolk, VA 23510
Oral Track 4 - Distributed Computing Track 4 - Distributed Computing


Hernandez, Fabio (IN2P3 / CNRS computing center)


The Vera C. Rubin Observatory, currently in construction in Chile, will start performing the Large Survey of Space and Time (LSST) late 2024 for 10 years. Its 8.4-meter telescope will survey the southern sky in less than 4 nights in six optical bands, and repeatedly generate about 2000 exposures per night, corresponding to a data volume of about 20 TB every night. Three data facilities are preparing to contribute to the production of the annual data releases: the US Data Facility (USDF) will process 25% of the raw data, the UK data facility (UKDF) will process 25% of the raw data and the French data facility (FrDF), operated by CC-IN2P3, that will locally process the remaining 50% of the raw data.

In the context of the Data Preview 0.2 (DP0.2), the Data Release Production (DRP) pipelines have been executed on the DC-2 simulated dataset (generated by the DESC collaboration, DESC). This dataset includes 20 000 simulated exposures, representing 300 square degrees of Rubin images with a typical depth of 5 years.

DP0.2 ran at the interim data facility (based on Google cloud), and the full exercise was replicated at CC-IN2P3. During this exercise, 3 PiB of data and more than 200 million files have been produced. In this contribution we will present a detailed description of the system that we set up to perform this processing campaign using CC-IN2P3's computing and storage infrastructure. Several topics will be addressed: workflow generation and execution, batch job submission, memory and I/O requirements, operations, etc. We will focus on the issues that arose during this campaign and how they have been addressed and will present the lessons learnt from this exercise.

Consider for long presentation No

Primary authors

Le Boulc'h, Quentin (CC-IN2P3 / CNRS) Hernandez, Fabio (IN2P3 / CNRS computing center) Mainetti, Gabriele

Presentation materials