The Shared Memory Parallelisation of an Ocean Modelling Code Using an Interactive Parallelisation Toolkit

This paper briefly describes an interactive parallelisation toolkit that can be used to generate parallel code suitable for either a distribtued memory system (using message passing) or a shared memory system (using OpeitMP). This study focuses on how tile toolkit is used to parallelise a complex heterogeneous ocean modelling code within a few horns for use on a shared memory parallel system. The generated parallel code is essentially tile serial code with OpeitMP directives added to express tile parallelism. The results show that substantial gains in perfomlance can be achieved over the single ttu-ead version with very little effort.