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A Hybrid MPI/PGAS Finite Element Solver
KTH, School of Computer Science and Communication (CSC), Numerical Analysis, NA (closed 2012-06-30).ORCID iD: 0000-0002-5020-1631
KTH, School of Computer Science and Communication (CSC), Numerical Analysis, NA (closed 2012-06-30).ORCID iD: 0000-0003-4256-0463
2012 (English)Report (Other academic)
Abstract [en]

We present our work on developing a hybrid parallel programming model for a general finite element solver. The main focus of our work is to demonstrate that legacy codes with high latency, two-sided communication in the form of message passing can be improved using lightweight one-sided communication. We introduce a new hybrid MPI/PGAS implementation of the open source finite element framework FEniCS, replacing the linear algebra backend (PETSc) with a new library written in UPC.  A detailed description of the linear algebra backend implementation and the hybrid interface to FEniCS is given. We also present a detailed analysis of the performance of this hybrid solver on the Cray XE6 Lindgren at PDC/KTH including a comparison with the MPI only implementation, where we find that the hybrid implementation results in improvements of up to 33% in communication intensive parts of the solver.

Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2012. , 7 p.
Series
TRITA-CTL, 28
National Category
Computer Science Computational Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-99051OAI: oai:DiVA.org:kth-99051DiVA: diva2:542114
Funder
Swedish e‐Science Research Center
Note

QC 20120730

Available from: 2012-07-30 Created: 2012-07-12 Last updated: 2013-04-09Bibliographically approved

Open Access in DiVA

fulltext(188 kB)408 downloads
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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
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Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
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  • Other locale
More languages
Output format
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