How to calculate DMIPS on DS5 FVP

The FVPs are functional models, not cycle accurate models. They do not model the details of the different pipelines, cache effects or the performance aspects of the memory system. So any numbers you get from the FVP won't be representative of what real hardware would have generated.

Hello Reco, 

Another alternative is to use ARM Cycle Models, which are cycle accurate models for ARM CPUs and will enable you to do such benchmarking for bare-metal applications. https://developer.arm.com/products/system-design/cycle-models