Software support for low latency communication in scalable multimedia DSP system

The software development and optimization of the communication is presented for an experimental scalable multiprocessor system purposed for multimedia applications. For convenient application mappings, presented C-code primitives hide the communication topology and allow the system to be expanded without needs to rewrite programs. For real-time applications, fast hardware communication need a strong support from software to prevent large latency times. Measured latency times and obtained throughput in communication are compared between user level application and maximum available hardware performance.