After 10 years of collaborating with HPC facilities and GPU vendors, I’ve embarked on an exciting journey to develop my own code for #cosmology simulations: hotwheels (@HotWheelsSims). This new n-body #hydrodynamic Gadget-like code is designed for CPU/GPU parallelism, modularity, and mini-apps building at its core - key for seamless collaboration with #HPC facilities and GPU engineers.