Nuclear fusion simulation code optimization on GPU clusters

Fujita, Norihisa*; Nuga, Hideo*; Boku, Taisuke*; Idomura, Yasuhiro

A fusion plasma turbulence simulation code GT5D is optimized for GPU clusters with multiple GPUs on a node. We get 3.37 times faster performance in maximum in function level evaluation, and 2.03 times faster performance in total than the case of CPU-only execution on the HA-PACS GPU cluster. It includes 53% performance gain with overlapping MPI communications and GPU calculations.

Language	:	English
Journal	:	Proceedings of 19th IEEE International Conference on Parallel and Distributed Systems (ICPDCS 2013) (USB Flash Drive)
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Pages	:	2 Pages
Publication Year/Month	:	2013/12
Meeting title	:	19th IEEE International Conference on Parallel and Distributed Systems (ICPDCS 2013)
Held date	:	2013/12
Location (city)	:	Seoul
Location (country)	:	Korea
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Keywords	:	no keyword
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Registration No. : BB20131439
JAEA Abstracts No. : 42000564
Paper Submission No. : 14203

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