5 papers
Effects of lower floating-point precision on scale-resolving numerical simulations of turbulence
Martin Karp, Ronith Stanly, Timofey Mukha +11
Modern computing clusters offer specialized hardware for reduced-precision arithmetic that can speed up the time to solution significantly. This is possible due to a decrease in da…
Assessment of the Gradient Jump Penalisation in Large-Eddy Simulations of Turbulence
Shiyu Du, Manuel Münsch, Niclas Jansson +1
This research investigates the efficacy of the gradient jump penalisation (GJP) in large eddy simulations (LES) when coupled with active subgrid-scale (SGS) models. GJP is a stabil…
Enabling mixed-precision in spectral element codes
Yanxiang Chen, Pablo de Oliveira Castro, Paolo Bientinesi +2
Mixed-precision computing has the potential to significantly reduce the cost of exascale computations, but determining when and how to implement it in programs can be challenging.…
Portable High-Performance Kernel Generation for a Computational Fluid Dynamics Code with DaCe
MÃ¥ns I. Andersson, Martin Karp, Niclas Jansson +1
With the emergence of new high-performance computing (HPC) accelerators, such as Nvidia and AMD GPUs, efficiently targeting diverse hardware architectures has become a major challe…
Robustness and uncertainty of direct numerical simulation under the influence of rounding and noise
Martin Karp, Niclas Jansson, Saleh Rezaeiravesh +2
Numerical precision in large-scale scientific computations has become an emerging topic due to recent developments in computer hardware. Lower floating point precision offers the p…