PM Programming Language

One of the PM design goals was to create a combined model for parallelisation and vectorisation. Basic PM parallel structures have the same form when distributing code over a distributed cluster as they do running vector operations on a single core. This not to say that this underlying hardware structure is invisible to the programmer; the mapping from parallel programming structures to hardware is both explicit and configurable, as will be described in a future post. A previous post introduced the PM for statement and communicating operators. The for statement executes its body of statements concurrently for each member of an array or domain.   Communicating operators provide both communication and synchronisation by allowing a local variable to be viewed as an array over the complete ‘iteration’ domain. In the absence of other control structures, communicating operators act as straightforward synchronisation points between invocations: for .. do statements_...