This document discusses large scale computing with medical metabolic phenotyping data. It describes how metabolomics measures small molecule metabolites in biological organisms using techniques like NMR and mass spec. Metabolomics data is growing rapidly and being stored in repositories like MetaboLights at EBI. Phenome centers around the world are generating huge amounts of metabolomics data that will require exabytes of storage. The PhenoMeNal project aims to enable large scale computing with medical metabolomics data through collaborations between EBI, other data centers, and phenomics user communities.