Detail publikace

A GPU solver for symmetric positive-definite matrices vs. traditional codes

BOHÁČEK, J. KARIMI-SIBAKI, E. KHARICHA, A. LUDWIG, A. WU, M. HOLZMANN, T.

Originální název

A GPU solver for symmetric positive-definite matrices vs. traditional codes

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

In Heat Transfer and Fluid Flow Laboratory in Brno, the inverse heat conduction problem (IHCP) has been extensively used to reconstruct thermal boundary conditions at hot surfaces of solid materials cooled by spraying nozzles. More than three decades of experience and cooperation with industries has proven our experimental/numerical technique to be reliable and very accurate. However, a typical calculation requires relatively long calculation time. The transient heat diffusion in a multi-material sample is the most computationally costly ingredient of the algorithm. In the present paper, the potential for speeding up our calculations is manifested by firstly benchmarking it against traditional CFD codes such as OpenFOAM (FDIC) and ANSYS Fluent (AMG). Secondly, we also unveil a unique comparison between the performance of three inhouse GPU codes each written by a different PhD student/postdoc. Chronologically listed, one student pushed his luck with a fully explicit scheme, while the other two, including us, bet on implicit methods namely the line-by-line method in OpenCL and the conjugate gradient method with the deflated truncated Neumann series preconditioner in CUDA C. (C) 2019 The Authors. Published by Elsevier Ltd.

Klíčová slova

Linear solver; Inverse task; Heat transfer; GPU; CUDA; OpenFOAM

Autoři

BOHÁČEK, J.; KARIMI-SIBAKI, E.; KHARICHA, A.; LUDWIG, A.; WU, M.; HOLZMANN, T.;

Vydáno

7. 3. 2019

Nakladatel

PERGAMON-ELSEVIER SCIENCE LTD

Místo

OXFORD

ISSN

0898-1221

Periodikum

Computers and Mathematics with Applications

Ročník

78

Číslo

9

Stát

Spojené království Velké Británie a Severního Irska

Strany od

2933

Strany do

2943

Strany počet

11

URL

https://www.sciencedirect.com/science/article/pii/S0898122119301105

BibTex

@article{BUT163681,
  author="BOHÁČEK, J. and KARIMI-SIBAKI, E. and KHARICHA, A. and LUDWIG, A. and WU, M. and HOLZMANN, T.",
  title="A GPU solver for symmetric positive-definite matrices vs. traditional codes",
  journal="Computers and Mathematics with Applications",
  year="2019",
  volume="78",
  number="9",
  pages="2933--2943",
  doi="10.1016/j.camwa.2019.02.034",
  issn="0898-1221",
  url="https://www.sciencedirect.com/science/article/pii/S0898122119301105"
}