The heading DiffuDict appears in the module section, on the left side of the GeoDict GUI, when selecting Predict → DiffuDict in the menu bar. Five commands can be selected from the pull-down menu: Simulate Diffusion Experiment, Bulk (Laplace) Diffusion, Molecular Diffusion, Knudsen Diffusion, and Bosanquet Approximation. Additionally, some Diffusion GeoApps are available.

The solver options for each of the algorithms can be modified through the corresponding Edit… buttons. When the options have been entered, click the Run button in the DiffuDict section to start the computation.

Click Cloud to run it in the GeoDict cloud, see the Cloud user guide for details.

When recording a macro, the Record button becomes active and the Run button changes to Run & Record.

After clicking Run, the computations start but the diffusivity solver process can be stopped by clicking Cancel in the progress dialog box. Depending on the solver’s internal processes and actual memory usage, cancelling the computation may not be instantaneous.

For Simulate Diffusion Experiment and Bulk (Laplace) Diffusion, the hardware requirements of the solver can be estimated a priori by clicking the Estimate Memory & Disk-Space button. The estimated computational memory requirements are shown in a Memory & Disk-Space message.