Great balls of fire!
Olivier Maury, Ian Sachs, and Dan Piponi won a Technical Achievement Award (Academy Certificate) for the Industrial Light & Magic's (ILM) Plume system, which "replicates and renders fire, smoke, and explosions for the special effects in films" according to a statement on the awards page. The Academy explained further:
The unique construction of this system combines fluid solving and final image rendering on the GPU (graphics processing unit) hardware without needing an intermediate step involving the CPU. This innovation reduces turnaround time, resulting in significant efficiency gains for the ILM effects department.
Digitally simulating fire and water is notoriously difficult. "Plume is both a fluid simulation system and a GPU-based renderer that was built using the NVIDIA CUDA parallel computing architecture," according to Nvidia case study describing its work on Plume.