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May 8 – 12, 2023
Norfolk Waterside Marriott
US/Eastern timezone

The ALICE Grid Workflow for LHC Run 3

May 11, 2023, 3:00 PM
15m
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

Speaker

Storetvedt, Maksim (CERN)

Description

In preparation for LHC Run 3 and 4, the ALICE Collaboration has moved to a new Grid middleware, JAliEn, and workflow management system. The migration was dictated by the substantially higher requirements on the Grid infrastructure in terms of payload complexity, increased number of jobs and managed data volume, all of which required a complete rewrite of the middleware using modern software languages and technologies. Through containerization, self-contained binaries, managed by the JAliEn middleware, we provide a uniform execution environment across sites and various architectures, including accelerators. The model and implementation have proven their scalability and can be easily deployed across sites with minimal intervention.

This contribution outlines the architecture of the new Grid workflow as deployed in production and the workflow process. Specifically shown is how core components are moved and bootstrapped through CVMFS, enabling the middleware to run anywhere fully independent of the host system. Furthermore, it will examine how new middleware releases, containers and their runtimes are centrally maintained and easily deployed across the Grid, also by the means of a common build system.

Consider for long presentation No

Primary author

Co-authors

Dr Betev, Latchezar (CERN) Dr Helstrup, Håvard (Western Norway University of Applied Sciences) Dr Kileng, Bjarte (Western Norway University of Applied Sciences) Hetland, Kristin Fanebust (Western Norway University of Applied Sciences)

Presentation materials

Peer reviewing

Paper