An OpenCL implementation for the solution of TDSE on GPU and CPU architectures

Details An OpenCL implementation for the solution of TDSE on GPU and CPU architectures An OpenCL implementation for the solution of TDSE on GPU and CPU architectures

2012-01-29

arxiv.org/abs/1201.6062v2

Physics

Computational Physics

11 pages, 7 figures. The present version is slightly different from the submitted peer-reviewed version

Scientific paper

Open Computing Language (OpenCL) is a parallel processing language that is ideally suited for running parallel algorithms on Graphical Processing Units (GPUs). In the present work we report on the development of a generic parallel single-GPU code for the numerical solution of a system of first-order ordinary differential equations (ODEs) based on the OpenCL model. We have applied the code in the case of the Time-Dependent Schr\"odinger Equation of atomic hydrogen in a strong laser field and studied its performance on NVIDIA and AMD GPUs against the serial performance on a CPU. We found excellent scalability and a significant speed-up of the GPU over the CPU device which tended towards a value of about 40 with significant speedups expected against multi-core CPUs.

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