GAMER with out-of-core computation
Department of Physics, National Taiwan University, 106, Taipei, Taiwan, R.O.C.
arXiv:1007.3818v1 [astro-ph.IM] (22 Jul 2010)
@article{schive2010gamer,
title={GAMER with out-of-core computation},
author={Schive, H.Y. and Tsai, Y.C. and Chiueh, T.},
journal={Arxiv preprint arXiv:1007.3818},
year={2010}
}
GAMER is a GPU-accelerated Adaptive-MEsh-Refinement code for astrophysical simulations. In this work, two further extensions of the code are reported. First, we have implemented the MUSCL-Hancock method with the Roe’s Riemann solver for the hydrodynamic evolution, by which the accuracy, overall performance and the GPU versus CPU speed-up factor are improved. Second, we have implemented the out-of-core computation, which utilizes the large storage space of multiple hard disks as the additional run-time virtual memory and permits an extremely large problem to be solved in a relatively small-size GPU cluster. The communication overhead associated with the data transfer between the parallel hard disks and the main memory is carefully reduced by overlapping it with the CPU/GPU computations.
November 4, 2010 by hgpu
