Signal Processor Fine Grain Control Research

• Develop an approach to enable fine grain control of multiprocessor signal processing applications to enable rapid response to changing modes and conditions

• Domain co-simulation to enable
  • DFGs with FSM nodes
  • FSMs with DFG "states"

• Token level control logic tightly couples FSM-DFG simulation, execution, and code generation
• Contrast with loosely coupled Command Program FSM and DFG Application
• DFG syntax awkwardly represents control logic (spaghetti graphs)

• Ptolemy 0.7 demonstrates feasibility of FSM-DFG co-simulation
• *Charts unify diverse hierarchical FSM semantics
• FSM research to continue after RASSP
• Report: "Integrating Control and Signal Processing" dated 10/16/96

• Design and implementation methods for complex realtime systems
• Heterogeneous use of domain specific models of computation
• Hardware-software codesign
• Ptolemy software environment
• Professor Edward Lee: eal@eccs.berkeley.edu