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arXiv · 1007.3818

GAMER with out-of-core computation

Hsi-Yu Schive·Yu-Chih Tsai·Tzihong Chiueh
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Abstract

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.

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Hsi-Yu Schive, Yu-Chih Tsai, Tzihong Chiueh. 2010-07-22. GAMER with out-of-core computation. https://doi.org/10.1017/s1743921311000718

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