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A PGAS-based Implementation for the Unstructured CFD Solver TAU

Simmendinger, Christian and Jägersküpper, Jens and Machado, Rui and Lojewski, Carsten (2011) A PGAS-based Implementation for the Unstructured CFD Solver TAU. 5th Conference on Partitioned Global Address Space Programming Models, 15. - 18. Okt. 2011, Tremont House, Galveston Island, Texas, USA.

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Official URL: http://pgas11.rice.edu/papers/SimmendingerEtAl-CFD-Solver-TAU-PGAS11.pdf


Whereas most applications in the realm of the partitioned global address space make use of PGAS languages we here demonstrate an implementation on top of a PGAS-API. In order to improve the scalability of the unstructured CFD solver TAU we have implemented an asynchronous communication strategy on top of the PGAS-API of GPI. We have replaced the bulk-synchronous two-sided MPI exchange with an asynchronous, RDMA-driven, one-sided communication pattern. We also have developed an asynchronous shared memory strategy for the TAU solver. We demonstrate that the corresponding implementation not only scales one order of magnitude higher than the original MPI implementation, but that it also outperforms the hybrid OpenMP/MPI programming model.

Item URL in elib:https://elib.dlr.de/72100/
Document Type:Conference or Workshop Item (Speech, Paper)
Title:A PGAS-based Implementation for the Unstructured CFD Solver TAU
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Simmendinger, ChristianT-Systems Solution for ResearchUNSPECIFIED
Jägersküpper, JensDLRUNSPECIFIED
Machado, RuiFraunhofer ITWMUNSPECIFIED
Lojewski, CarstenFraunhofer ITWMUNSPECIFIED
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Series Name:Conference Proceedings online
Keywords:Computational Fluid Dynamics CFD, TAU, Communication libraries, Software for communication optimization, PGAS, GPI
Event Title:5th Conference on Partitioned Global Address Space Programming Models
Event Location:Tremont House, Galveston Island, Texas, USA
Event Type:international Conference
Event Dates:15. - 18. Okt. 2011
Organizer:Rice University, Houston, Texas, USA
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Aircraft Research (old)
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Simulation & Validation (old)
Location: Braunschweig
Institutes and Institutions:Institute of Aerodynamics and Flow Technology > CASE
Deposited By: Jägersküpper, Dr.rer.nat. Jens
Deposited On:30 Nov 2011 11:39
Last Modified:23 Feb 2012 10:18

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