Figure 3.

Schematic of the code generation flow for the GPU simulator framework GeNN. Neural models are described in a C/C++ model definition function (“ExampleModel.cc”), either hand-crafted by a user or generated from a higher-level model description language such as SpineML or Brian 2 (see main text). The neuron model description is included into the GeNN compiler that produces optimized CUDA/C++ code for simulating the specified model. The generated code can then be used by hand-crafted or independently generated user code to form the final executable. The framework is minimalistic in generating only optimized CUDA/C++ code for the core model and not the simulation workflow in order to allow maximal flexibility in the deployment of the final executable. This can include exploratory or large scale simulations but also real-time execution on embedded systems for robotics applications. User code in blue, GeNN components in gray, generated CUDA/C++ code in pink.