Trebuchet: exploring TLP with dataflow virtualisation Online publication date: Sat, 21-Mar-2015
by Tiago A.O. Alves, Leandro A.J. Marzulo, Felipe M.G. Franca, Vitor Santos Costa
International Journal of High Performance Systems Architecture (IJHPSA), Vol. 3, No. 2/3, 2011
Abstract: Parallel programming has become mandatory to fully exploit the potential of multi-core CPUs. The dataflow model provides a natural way to exploit parallelism. However, specifying dependences and control using fine-grained instructions in dataflow programs can be complex and present unwanted overheads. To address this issue, we have designed TALM: a coarse-grained dataflow execution model to be used on top of widespread architectures. We implemented TALM as the Trebuchet virtual machine for multi-cores. The programmer identifies code blocks that can run in parallel and connects them to form a dataflow graph, which allows one to have the benefits of parallel dataflow execution in a Von Neumann machine, with small programming effort. We parallelised a set of seven applications using our approach and compared with OpenMP implementations. Results show that Trebuchet can be competitive with state-of-the-art technology, while providing the benefits of dataflow execution.
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