Reconfigurable out-of-order mechanism generator for unstructured grid computation in computational fluid dynamics

Takayuki Akamine, Kenta Inakagata, Yasunori Osana, Naoyuki Fujita, Hideharu Amano

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

FaSTAR developed by JAXA is a leading edge CFD (Computational Fluid Dynamics) program package which supports various solvers based on unstructured grids. The computation based on unstructured grid causes a lot of pipeline stalls by RAW (Read After Write) hazard when reconfigurable accelerators are implemented in FPGAs. In order to cope with this problem, the OoO (Out-of-Order) mechanism generator is proposed. By setting parameters depending on the target computation, the OoO mechanism with appropriate structure of the execution unit and waiting buffer is generated. The OoO mechanisms are applied to five subroutines in FaSTAR, and it achieved 2.6 times performance as the case of in-order execution, and 2.9 times as the software executed by Intel Core2Duo processor with reasonable amount of overhead.

Original languageEnglish
Title of host publicationProceedings - 22nd International Conference on Field Programmable Logic and Applications, FPL 2012
Pages136-142
Number of pages7
DOIs
Publication statusPublished - 2012 Dec 12
Event22nd International Conference on Field Programmable Logic and Applications, FPL 2012 - Oslo, Norway
Duration: 2012 Aug 292012 Aug 31

Publication series

NameProceedings - 22nd International Conference on Field Programmable Logic and Applications, FPL 2012

Other

Other22nd International Conference on Field Programmable Logic and Applications, FPL 2012
CountryNorway
CityOslo
Period12/8/2912/8/31

ASJC Scopus subject areas

  • Computer Science Applications

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