Speakers
Description
For over two decades, computing resources in the Worldwide LHC Computing Grid (WLCG) have been based exclusively on the x86 architecture. However, in the near future, heterogeneous non-x86 architectures are expected to make up a significant portion of the resources available to LHC experiments driven also by their adoption in current and upcoming world-class HPC facilities. In response to this shift, the CMS experiment has begun preparing by building the CMS software stack (CMSSW) for multiple architectures. To enable production-level use of these diverse resources, workload management and job distribution has also been extended to support heterogeneous computing environments.
Among the emerging architectures, ARM is seeing increasing adoption. As power consumption in computing comes under growing global scrutiny — driven by concerns over carbon emissions and escalating energy costs — energy-efficient solutions are becoming more attractive. ARM processors, known for their low power usage and widespread deployment in mobile devices, have not yet been broadly adopted as capacity hardware within the Worldwide LHC Computing Grid.
In this contribution we will describe the efforts done by the CMS experiment to include and test ARM resources, focussing on the challenges in integrating such resources in the central production pool and in validating their usage in term of reproducible and comparable — with respect to x86 — physics performances.
| Experiment context, if any | CMS experiment |
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