Revision as of 11:58, 15 December 2023 view source Pavlina Monhartova (talk \| contribs) Bureaucrats, Administrators 5,368 edits →Is it possible run two TUFLOW HPC simulations using a single GPU and how does this affect performance? ← Older edit		Revision as of 08:24, 22 May 2024 view source Pavlina Monhartova (talk \| contribs) Bureaucrats, Administrators 5,368 edits →Why is my HPC model getting unstable? And why are my control numbers lower than they could be? Newer edit →
Line 90: <br> = Why is my HPC model getting unstable? ~~And~~Why ~~why~~am I getting a timestep error? Why are my control numbers ~~lower than they could~~so below? = If there are no wet cells at the beginning of the simulation, the adaptive timestep can get quite big. Once the flow increases rapidly, instabilities can develop, which leads to oscillations in variables that grow over time, eventually leading to NaNs in the solution. Two situations can occur: * The solver can't reduce the big timestep to a sufficiently small timestep within the ten default trials, the simulation gets unstable and the model is stopped with an error.

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