11036

Fast quantum Monte Carlo on a GPU

Y. Lutsyshyn
Institut fur Physik, Universitat Rostock, 18051 Rostock, Germany
arXiv:1312.1282 [physics.comp-ph], (2 Dec 2013)

@article{2013arXiv1312.1282L,

   author={Lutsyshyn}, Y.},

   title={"{Fast quantum Monte Carlo on a GPU}"},

   journal={ArXiv e-prints},

   archivePrefix={"arXiv"},

   eprint={1312.1282},

   primaryClass={"physics.comp-ph"},

   keywords={Physics – Computational Physics, Condensed Matter – Other Condensed Matter},

   year={2013},

   month={dec},

   adsurl={http://adsabs.harvard.edu/abs/2013arXiv1312.1282L},

   adsnote={Provided by the SAO/NASA Astrophysics Data System}

}

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We present a scheme for the parallelization of quantum Monte Carlo on graphical processing units, focusing on bosonic systems and variational Monte Carlo. We use asynchronous execution schemes with shared memory persistence, and obtain an excellent acceleration. Comparing with single core execution, GPU-accelerated code runs over x100 faster. The CUDA code is provided along with the package that is necessary to execute variational Monte Carlo for a system representing liquid helium-4. The program was benchmarked on several models of Nvidia GPU, including Fermi GTX560 and M2090, and the latest Kepler architecture K20 GPU. Kepler-specific optimization is discussed.
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