OpenLB – Open Source Lattice Boltzmann Code › Forums › on OpenLB › Bug Reports › SuperLatticePhysHeatFlux3D Different Results on GPU vs CPU › Reply To: SuperLatticePhysHeatFlux3D Different Results on GPU vs CPU October 11, 2023 at 10:36 am #7817 IboralalpIParticipant Hi Adrian, Thank you for your answer. It works now! Just as a hint for the other users, you have to setProcessingContext before and after the steps of setting boundary values when you are updating the values during run-time. Best