Session

DescriptionWhile parallel applications in all scientific and engineering domains have always been prone to execution inefficiencies that limit their performance and scalability, exascale computer systems comprising millions of heterogeneous processors/cores present a very considerable imminent challenge to be addressed for academia and industry alike. HPC Centres of Excellence are funded by the EU Horizon2020 programme to prepare applications for forthcoming exascale computer systems [https://www.focus-coe.eu/index.php/centres-of-excellence-in-hpc-applications/]. The transversal Performance Optimisation and Productivity Centre of Excellence (POP CoE) [https://www.pop-coe.eu] supports the others, along with the wider European community of application developers, with impartial application performance assessments of parallel execution efficiency and scaling based on a solid methodology analysing measurements with open-source performance tools. This minisymposium part complements the first with three additional HPC CoE presentations of their experience collaborating with POP in preparing their flagship codes for exascale, and concludes with a discussion session involving the presenters from both parts.