GeNN is a GPU enhanced Neuronal Network simulation environment based on NVIDIA CUDA technology.
Work is currently in progress on SpineML_2_GeNN, which generates GeNN code from a SpineML model. The code is found within the SpineML_to_GeNN directory in the genn github repository: https://github.com/genn-team/genn
Be warned that there is currently no documentation whatever, and the current state of the SpineML_to_GeNN code relates to an old version of the GeNN code. Nevertheless, a comparison of SpineML_2_BRAHMS and SpineML_2_GeNN will give insight into the common features required by a SpineML simulator back-end.