SCHEDULE: NOV 16-21, 2014

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Rolls-Royce Hydra CFD Code on GPUs Using OP2 Abstraction

SESSION: Poster Reception

EVENT TYPE: Posters

TIME: 5:15PM - 7:00PM

AUTHOR(S):Istvan Z. Reguly, Gihan R. Mudalige, Carlo Bertolli, Michael B. Giles, Adam Betts, Paul H. J. Kelly, David Radford

ROOM:New Orleans Theater Lobby

ABSTRACT:

Hydra is an industrial CFD application used for the design of turbomachinery, now automatically accelerated by GPUs through the OP2 domain specific "active library" for unstructured grid algorithms. From the high-level definition, either CPU or GPU code is generated, applying optimisations such as conversion to Structure-of-Arrays, use of the read-only cache or the tuning of block sizes automatically. A single GPU is over 2 times faster than the original on a server-class CPU, we demonstrate excellent strong and weak scaling, evaluated up to 4096 CPU cores or 16 GPUs.

Chair/Author Details:

Istvan Z. Reguly - University of Oxford

Gihan R. Mudalige - University of Oxford

Carlo Bertolli - IBM Corporation

Michael B. Giles - University of Oxford

Adam Betts - Imperial College London

Paul H. J. Kelly - Imperial College London

David Radford - Rolls-Royce plc

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