1. A test instrument network for testing a plurality of DUTs, said network comprising: a controller; a plurality of communicating script processors, said script processors being adapted to execute computer code; and a plurality of measurement resources controllable by said script processors in response to executed computer code, said measurement resources being adapted to test said DUTs, wherein each script processor and measurement resource may be arbitrarily assigned by said controller to one of at least two groups, only one script processor being assigned to be a master script processor, any other script processor being a slave script processor and any group not including the master script processor being a remote group, said master script processor being exclusively authorized to initiate code execution on any script processor in a remote group, any said slave script processor only being able to initiate operation of measurement resources in the group of said any said slave script processor, and further, when a particular script processor is executing computer code, the master script processor may not initiate execution of computer code on a member script processor in the group of said particular script processor and may not initiate operation of a member measurement resource in the group of said particular script processor.