Due to recent bot attacks we have changed the sign-up process. If you want to participate in our forum please send a message via our contact form. › Forums › OpenLB › General Topics › SuperLatticePhysTemperature3D › Reply To: SuperLatticePhysTemperature3D June 27, 2022 at 5:17 pm #6680 mathiasKeymaster You can add a “NSlattice.communicate()” every time before writing the actual output.