D7.4.2: Benchmarking and Performance Modelling on Tier-0 Systems

This document is a report on the activities of Task 7.4 “Applications requirements for Tier-0 systems” in the areas of benchmarking and performance modelling. We describe the work undertaken in updating the PRACE Application Benchmark Suite (PABS) developed in the PRACE Preparatory Phase project, and the results of porting and running these benchmarks on the two available Tier-0 systems (JUGENE and CURIE). We also report on the results of running the collection of synthetic benchmarks gathered by the Preparatory Phase project on CURIE. Finally, we illustrate the potential benefits of performance modelling in capturing application requirements by developing performance models for two of the PABS application codes, and assessing the likely impact of architecture changes on their performance