The dockopt_config.yaml file defines the architecture of the DockOpt pipeline and controls the range of values that are explored for each parameter. The blaster DAG is derived automatically from the settings in the dockopt_config.yaml file, and a single step in a DockOpt pipeline generates several different docking models which are then evaluated in parallel. A sequence of steps may be defined with optional iteration and/or early stopping, and recursive embedding of step sequences is supported.