Hi everyone,

we have simulated the hydrology of a river course with a structure of three gates. The left and right gate is closed and the middle one partially open. If you now use Iber+ to run the simulation (see pic. Iber+), the gate is shown as closed in post-processing and the water flows left and right of it. It doesn't matter if the gate is open, closed or partially open.

If you now run the simulation with Iber on the CPU (see pic. Iber_CPU), this "bug" does not occur anymore. 

Here you can download the mentioned pictures: https://www.dropbox.com/sh/7d27kmeqnvr3dpg/AACbJuX4ux8JopHsqC27bel3a?dl=0

Does anyone have an idee how to solve the problem in order to continue running the simulation on the GPU? 

We are using Iber 2.5.1. The OS is windows 10 64bit.

Iber+ runs on a NVidia GTX 1650 and RTX 2060 Super graphic cards.

Many thanks in advance.

Moritz