Résumé
Spark is being successfully used for big data parallel processing in many business domains (social media, finance, retail). Spark's scalability, usability, and large user community have motivated developers from scientific domains (bioinformatics, oil and gas, astronomy) to try it. However, scientific applications' profile, e.g., black-box programs and intense file writes, differs from traditional business workflows, which may affect its scalability. We present a scalability analysis of Spark in a real case-study in Oil and Gas domain. We explore workloads on a 936-cores HPC cluster processing 330 GB of scientific data. We show that it scales very well when running long-lasting scientific tasks, but its performance is lower for short-duration tasks.