1. A non-transitory memory medium that stores program instructions executable by a processor to perform: displaying a graphical program on a display of a computer system, wherein the graphical program comprises a plurality of interconnected nodes that visually indicate functionality of the graphical program; and graphically specifying targeted execution of a first graphical program portion of the graphical program on an execution target, wherein said graphically specifying comprises displaying a visual indication of the specified targeted execution on the display of the graphical program; wherein during execution of the graphical program, the first graphical program portion executes on the specified execution target and a remainder of the graphical program executes on a default execution target.