A method and system for performing data processing. A request for agent software is acquired by an agent computer system from a user computer system and in response, the agent computer system retrieves the agent software from a repository of agents and migrates the retrieved agent software to the user computer system. The agent computer system acquires an itinerary and N sets of run time instructions from the user computer system. N is at least 2. The itinerary specifies a path along which the agent software is to migrate to perform a portion of the data processing on N computer systems using the N sets of run time instructions. The agent computer system provides the received itinerary and the N sets of run time instructions to the agent software at the user computer system.