ParBlocks - A new methodology for specifying concurrent method executions in opus

Abstract

Many applications make use of hybrid programming models intermixing task and data parallelism in order to exploit modern architectures more efficiently. However, unbalanced computational load or idle times due to tasks that are blocked in I/O or waiting on results from other tasks can cause significant performance problems. Fortunately, such idle times can be overlapped with useful computation in many cases. In this paper we propose a simple, yet powerful methodology for specifying intra-object parallelism and synchronization in the context of the coordination language Opus. © Springer-Verlag Berlin Heidelberg 1999.