Project Seminar "Parallel and Distributed Software and Algorithms"
Wolfgang Schreiner <Wolfgang.Schreiner@risc.uni-linz.ac.at>
326.833, WS 2000/2001, Start: November 8
Thu 13:00-14:30, Hagenberg
Traditional parallel programming languages require the programmer to handle details of the parallel coordination such as the synchronisation of parallel tasks. This approach forces the programmer to deal with subtle timing issues that may lead to deadlocks or race conditions, which greatly complicates the design of a correct parallel program. Our parallel functional language, GPH, takes an approach of semi-explicit parallelism. In this model the programmer only has to annotate expressions that should be evaluated in parallel. By automatically handling task synchronisation etc it is fairly easy to develop a parallel program in this model. However, the higher level of abstraction poses a complication for understanding details of the dynamic behaviour. In this talk I will first give an introduction to GPH and its parallel programming model and then discuss how to tune the parallel performance of GPH programs.