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GTC ON-DEMAND

Astronomy & Astrophysics
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Preparing an AMR Library for Summit
Abstract:
In this session you''ll hear about one team''s experience preparing an adaptive mesh refinement library -- and a fluid dynamics code based on it -- for Summit, the IBM POWER9 and NVIDIA Volta system at Oak Ridge National Laboratory, where multiple GPUs are connected via NVLink to each other and the CPUs. It was simple to compile and run on the OpenPOWER architecture, and to offload to the GPUs with CUDA Fortran, with little architecture-specific code. Initial results with POWER8 and P100 have shown excellent CPU and GPU performance and good multi-node scaling for an astrophysics mini-app that was difficult to run effectively on prior GPU architectures. We will also discuss our experiences porting other modules in our multi-physics codes, and preliminary results on the POWER9 and V100 platform.
 
Topics:
Astronomy & Astrophysics, Tools & Libraries, Computational Fluid Dynamics
Type:
Talk
Event:
GTC Silicon Valley
Year:
2018
Session ID:
S8397
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