118 research outputs found
GAMER with out-of-core computation
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.Comment: 4 pages, 4 figures, conference proceedings of IAU Symposium 270 (eds.
Alves, Elmegreen, Girart, Trimble
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