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arXiv · 1610.05801

Parallelisation of PyHEADTAIL, a Collective Beam Dynamics Code for Particle Accelerator Physics

Adrian Oeftiger
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Abstract

The longitudinal tracking engine of the particle accelerator simulation application PyHEADTAIL shows a heavy potential for parallelisation. For basic beam circulation, the tracking functionality with the leap-frog algorithm is extracted and compared between a sequential C and a concurrent CUDA C API implementation for 1 million revolutions. Including the sequential data I/O in both versions, a pure speedup of up to S = 100 is observed which is in the order of magnitude of what is expected from Amdahl's law. From O(100) macro-particles on the overhead of initialising the GPU CUDA device appears outweighed by the concurrent computations on the 448 available CUDA cores.

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Adrian Oeftiger. 2016-10-17. Parallelisation of PyHEADTAIL, a Collective Beam Dynamics Code for Particle Accelerator Physics. https://arxiv.org/abs/1610.05801

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