AMBER -- Assisted Model Building with Energy Refinement
AMBER  is a package of molecular simulation programs, which includes source code and demonstrations. The same name (see AMBER entry) is given to a set of molecular mechanical force fields for the simulation of biomolecules (which are in the public domain, and are used in a variety of simulation programs).
AMBER on Tesla GPUs
The explicit solvent and implicit solvent simulations in AMBER have been accelerated using CUDA-enabled GPUs. Paired with a Tesla GPU computing solution built on the CUDA architecture, it enables more than 10x speedup compared to a single quad-core CPU  (see also: Tesla Bio Workbench).