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We present novel optimizations of the fusion plasmas simulation code, GTC on Tianhe-2 supercomputer. The simulation exhibits excellent weak scalability up to 3072 31S1P Xeon Phi co-processors. An unprecedented up to 5.8× performance improvement is achieved for the GTC on Tianhe-2. An efficient particle exchanging algorithm is developed that simplifies the original iterative scheme to a direct implementation,...
GPU computing has been accepted as viable alternatives for compute-intensive applications. The radiative process is an important atmospheric physics process and the RRTM_LW radiative scheme has been chosen to be one of the five benchmark kernels by NCAR for atmospheric applications. We accelerate the RRTM_LW scheme on three different GPU platforms and obtain a speedup of 27.6×. Three decomposition...
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