Designing and Instrumenting a Software Template for Embedded Parallel Systems

This paper considers the design of a reusable software template for a par allel data farm which uses demand based load balancing A feature of the farm is integral instrumentation A design example is given for a hybrid processor message passing machine the Paramid in which monitoring is accomplished by an instrumented interface program Other aspects of the design are use of bu ering to mask communication latency an asyn chronous multicast provision and a controlled interface to the worker functions Trace material is discussed from two examples when the tem plate design was used to monitor real time continuous ow applications The template is a component of the Pipelined Processor Farm PPF methodology