| Issue |
EPJ Web Conf.
Volume 337, 2025
27th International Conference on Computing in High Energy and Nuclear Physics (CHEP 2024)
|
|
|---|---|---|
| Article Number | 01023 | |
| Number of page(s) | 8 | |
| DOI | https://doi.org/10.1051/epjconf/202533701023 | |
| Published online | 07 October 2025 | |
https://doi.org/10.1051/epjconf/202533701023
Whole-node scheduling in the ALICE Grid: Initial experiences and evolution opportunities
1 CERN, Esplanade des Particules 1, 1211 Geneva 23, Switzerland
2 Barcelona Supercomputing Center, Plaça Eusebi Güell, 1-3, 08034 Barcelona, Spain
* e-mail: marta.bertran.ferrer@cern.ch
** e-mail: costin.grigoras@cern.ch
*** e-mail: rosa.m.badia@bsc.es
**** e-mail: latchezar.betev@cern.ch
Published online: 7 October 2025
JAliEn, the Grid middleware of the ALICE experiment, utilises whole-node scheduling to maximise resource utilisation from participating sites. This approach offers flexibility in resource allocation and partitioning, allowing for customised configurations that adapt to the evolving needs of the experiment. This scheduling model is gaining traction among Grid sites due to its performance benefits. Additionally, understanding common execution patterns for different workloads allows for more efficient scheduling and resource allocation strategies.
Managing the entire set of resources on a node requires careful orchestration. To that end, JAliEn employs custom mechanisms to dynamically allocate idle resources to pending workloads, ensuring that overall resource usage stays within the capacity of a node.
This paper evaluates the experiences of the first sites using whole-node scheduling. It highlights its suitability for accommodating jobs with varying resource demands, particularly those with high memory requirements.
© 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.
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