Article 91QR Simulating Global Atmosphere with NICAM on TSUBAME2.5 Using OpenACC

Simulating Global Atmosphere with NICAM on TSUBAME2.5 Using OpenACC

by
Rich Brueckner
from High-Performance Computing News Analysis | insideHPC on (#91QR)
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"OpenACC was applied to the a global high-resolution atmosphere model named NICAM. We executed the dynamical core test without re-writing any specific kernel subroutines for GPU execution. Only 5% of the lines of source code were modified, demonstrating good portability. The results showed that the kernels generated by OpenACC achieved good performance, which was appropriate to the memory performance of GPU, as well as weak scalability. A large-scale simulation was carried out using 2560 GPUs, which achieved 60 TFLOPS."

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