Mixed-Precision Spectral Deferred Correction: Preprint

Research output: Contribution to conferencePaper


Convergence of spectral deferred correction (SDC), where low-order time integration methods are used to construct higher-order methods through iterative refinement, can be accelerated in terms of computational effort by using mixed-precision methods. Using ideas from multi-level SDC (in turn based on FAS multigrid ideas), some of the SDC correction sweeps can use function values computed in reduced precision without adversely impacting the accuracy of the final solution. This is particularly beneficial for the performance of combustion solvers such as S3D [6] which require double precision accuracy but are performance limited by the cost of data motion.
Original languageAmerican English
Number of pages10
StatePublished - 2015
Event27th International Conference on Parallel Computational Fluid Dynamics - Montreal, Canada
Duration: 17 May 201520 May 2015


Conference27th International Conference on Parallel Computational Fluid Dynamics
CityMontreal, Canada

NREL Publication Number

  • NREL/CP-2C00-64959


  • CFD
  • combustion
  • mixed precision
  • spectral deferred correction


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