| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01215 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/202533701215 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701215
Commissioning and exploitation of the MareNostrum5 cluster at the Barcelona Supercomputing Center for CMS computing
1 Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
2 Port d’Informació Cientifica (PIC), Barcelona, Spain
* Corresponding author: jose.hernandez@ciemat.es
Published online: 7 October 2025
The MareNostrum 5 (MN5) is the newly deployed pre-exascale EuroHPC supercomputer hosted at the Barcelona Supercomputing Center (BSC) in Spain. Its 750,000-core general-purpose CPU cluster offers new opportunities for CMS data processing and simulation but also presents integration challenges within the CMS distributed computing system, particularly due to network segregation for compute nodes. To address these constraints, innovative solutions previously implemented for its predecessor, MN4, have been redeployed, alongside new functionalities to support data-intensive workflows. The system’s expanded shared disk storage and enhanced wide-area network connectivity facilitate efficient staging of input datasets, leveraging MN5’s substantial CPU capacity. This contribution provides an overview of the commissioning efforts and the subsequent exploitation of MN5 for CMS.
© The Authors, published by EDP Sciences, 2025
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.