Utilize este identificador para referenciar este registo: http://hdl.handle.net/10362/13245
Título: Heterogeneous computing with an algorithmic skeleton framework
Autor: Soldado, Fábio Miguel Cardoso
Orientador: Paulino, Hervé
Palavras-chave: Algorithmic skeletons
OpenCL
GPGPU
Heterogeneous computing
Data de Defesa: Mar-2014
Resumo: The Graphics Processing Unit (GPU) is present in almost every modern day personal computer. Despite its specific purpose design, they have been increasingly used for general computations with very good results. Hence, there is a growing effort from the community to seamlessly integrate this kind of devices in everyday computing. However, to fully exploit the potential of a system comprising GPUs and CPUs, these devices should be presented to the programmer as a single platform. The efficient combination of the power of CPU and GPU devices is highly dependent on each device’s characteristics, resulting in platform specific applications that cannot be ported to different systems. Also, the most efficient work balance among devices is highly dependable on the computations to be performed and respective data sizes. In this work, we propose a solution for heterogeneous environments based on the abstraction level provided by algorithmic skeletons. Our goal is to take full advantage of the power of all CPU and GPU devices present in a system, without the need for different kernel implementations nor explicit work-distribution.To that end, we extended Marrow, an algorithmic skeleton framework for multi-GPUs, to support CPU computations and efficiently balance the work-load between devices. Our approach is based on an offline training execution that identifies the ideal work balance and platform configurations for a given application and input data size. The evaluation of this work shows that the combination of CPU and GPU devices can significantly boost the performance of our benchmarks in the tested environments, when compared to GPU-only executions.
URI: http://hdl.handle.net/10362/13245
Designação: Dissertação
Aparece nas colecções:FCT: DI - Dissertações de Mestrado

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