Efficient execution of parallel computer programs

A dataflow processing system including multiple run-time system cores, a respective run-time system core comprising:

• a set of multiple system management agents, said set including:
• a data percolation manager, a codelet scheduler, a codelet migration manager, a load balancer, a thread scheduler, and a power regulator or a performance manager, wherein a respective codelet is a block of instructions arranged to execute non-preemptively to completion, once respective input conditions, including availability of all required inputs and any other requirements for execution, of the respective codelets are satisfied, wherein the set of system management agents are configured to interact in a synergistic manner to optimize program execution in the multiple cores,
• wherein the data percolation manager is configured to percolate data, code or both to reside locally with respect to a codelet,
• wherein the codelet scheduler is configured to verify, once the data percolation manager has completed data percolation, that the input conditions for a given codelet are met, and to place the given codelet in an event pool, to indicate that the given codelet is enabled for execution, and
• wherein the thread scheduler is configured to take enabled codelets from the event pool and place them in one or more work queues associated with one or more execution cores.