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Reply To: SuperLatticePhysHeatFlux3D Different Results on GPU vs CPU

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› Forums › OpenLB › Bug Reports › SuperLatticePhysHeatFlux3D Different Results on GPU vs CPU › Reply To: SuperLatticePhysHeatFlux3D Different Results on GPU vs CPU

October 11, 2023 at 8:15 am #7815
Adrian
Keymaster

SuperLatticePhysHeatFlux3D is a functor which means that it operates only on CPU side data. Any difference in results between CPU and GPU would have to come from the model side (be it a bug or FPT implementation differences).

Just to make sure: You are synchronizing the relevant data from GPU to CPU (setProcessingContext) prior to evaluating the functor in your case?