Computer Science – Distributed – Parallel – and Cluster Computing
Scientific paper
2012-01-10
Computer Science
Distributed, Parallel, and Cluster Computing
Parallel Computing 2011 (ParCo2011), 30 August -- 2 September 2011, Ghent, Belgium
Scientific paper
Heterogeneous systems are becoming more common on High Performance Computing (HPC) systems. Even using tools like CUDA and OpenCL it is a non-trivial task to obtain optimal performance on the GPU. Approaches to simplifying this task include Merge (a library based framework for heterogeneous multi-core systems), Zippy (a framework for parallel execution of codes on multiple GPUs), BSGP (a new programming language for general purpose computation on the GPU) and CUDA-lite (an enhancement to CUDA that transforms code based on annotations). In addition, efforts are underway to improve compiler tools for automatic parallelization and optimization of affine loop nests for GPUs and for automatic translation of OpenMP parallelized codes to CUDA. In this paper we present an alternative approach: a new computational framework for the development of massively data parallel scientific codes applications suitable for use on such petascale/exascale hybrid systems built upon the highly scalable Cactus framework. As the first non-trivial demonstration of its usefulness, we successfully developed a new 3D CFD code that achieves improved performance.
Blazewicz Marek
Brandt Steven R.
Diener Peter
Koppelman David M.
Kurowski Krzysztof
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