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NekBone with Optimizaed OpenACC directives
KTH, Centra, SeRC - Swedish e-Science Research Centre. KTH, Skolan för datavetenskap och kommunikation (CSC), Centra, Parallelldatorcentrum, PDC.ORCID-id: 0000-0002-3859-9480
KTH, Skolan för datavetenskap och kommunikation (CSC), High Performance Computing and Visualization (HPCViz). KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0003-0639-0639
KTH, Skolan för datavetenskap och kommunikation (CSC), High Performance Computing and Visualization (HPCViz). KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0002-5415-1248
KTH, Skolan för datavetenskap och kommunikation (CSC), High Performance Computing and Visualization (HPCViz). KTH, Centra, SeRC - Swedish e-Science Research Centre.ORCID-id: 0000-0002-9901-9857
Vise andre og tillknytning
2015 (engelsk)Konferansepaper, Publicerat paper (Fagfellevurdert)
Abstract [en]

Accelerators and, in particular, Graphics Processing Units (GPUs) have emerged as promising computing technologies which may be suitable for the future Exascale systems. Here, we present performance results of NekBone, a benchmark of the Nek5000 code, implemented with optimized OpenACC directives and GPUDirect communications. Nek5000 is a computational fluid dynamics code based on the spectral element method used for the simulation of incompressible flow. Results of an optimized NekBone version lead to 78 Gflops performance on a single node. In addition, a performance result of 609 Tflops has been reached on 16, 384 GPUs of the Titan supercomputer at Oak Ridge National Laboratory.

 

sted, utgiver, år, opplag, sider
2015. , s. 8s. 63-70
Emneord [en]
NekBone/Nek5000, OpenACC, Spectral element method, GPUDi rect
HSV kategori
Identifikatorer
URN: urn:nbn:se:kth:diva-180731ISBN: 978-84-608-2581-4 (tryckt)OAI: oai:DiVA.org:kth-180731DiVA, id: diva2:896571
Konferanse
the Second International Workshop on Sustainable Ultrascale Computing Systems (NESUS 2015)
Merknad

QC 20160308

Tilgjengelig fra: 2016-01-21 Laget: 2016-01-21 Sist oppdatert: 2017-08-16bibliografisk kontrollert

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Gong, JingMarkidis, Stefano

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Totalt: 338 treff
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