Purdue Federal Credit Union
In this paper, the authors propose a novel queue-based programming abstraction, Parallel Dispatch Queue (PDQ) that enables efficient parallel execution of fine-grain software communication protocols. Parallel systems often use fine-grain software handlers to integrate a network message into computation. Executing such handlers in parallel requires access synchronization around resources. Much as a monitor construct in a concurrent language protects accesses to a set of data structures, PDQ allows messages to include a synchronization key protecting handler accesses to a group of protocol resources.