HPC FAQ: Difference between revisions
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* The CME%, which is an excellent indicator that the Classic 2D solver is numerically converging, is not generally of use for HPC, which is volume conserving and effectively 0% subject to numerical precision. Non-zero whole of model CME% for HPC 1D/2D linked models is usually an indication of either the 1D and 2D adaptive timesteps being significantly different, or a poorly configured 1D/2D link.
= Why is my model using 2020 HPC
The change in runtime can be due to different timestepping applied with the new default - mesh size insensitive turbulence model - Wu instead of Smagorinsky. To confirm this is the case, test run your model with 2020release and the following commands:<br>
<font color="blue"><tt>Viscosity Formulation </tt></font> <font color="red"><tt>==</tt></font><tt> Smagorinsky</tt> <br>
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