Nested model performance

The NEMO code allows nested models to be used which enable different parts of the ocean to be modelled with different resolution within the same global model. E.g. an area of the Pacific Ocean could be model at 1 degree resolution with the remainder of the Earth's Oceans being modelled at 2 degree resolution. This type of modelling can help scientists to gain a better insight into particular ocean features whilst keeping the computational costs reasonable. In the past, setting up such models has been very time consuming and relatively few attempts have been made to run such configuration on high performance computing systems. In WP2 we aim to investigate the performance of such nested models and to improve the performance subject to our findings. Our main goal is to achieve a stable and optimised nested model with known scalability.