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All three options use the same executable file. MPI is a new feature with the release of EEMS10.2. A number of principles to consider when configuring an MPI run are provided. The user can select the run option from the EFDC+ Run Options form as described on the page for each option. The Model Timing tab and Run Time Diagnostics tab are applied for all three run options and described in detail below.
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Generally speaking, MPI tends to scale well with model size i.e. high cell and layer count. Conversely, OMP scales better when there is a lot of transport. If, for example, you have a smaller model that is only simulating temperature and salinity, you likely will not be able to take full advantage of extra cores. It typically takes some experimentation to find the ideal ratio of # of MPI processes and OMP cores per domain. |
Model Timing tab
Model Timing options should be set by the user with the EFDC+ Run Options form as shown in Figure 3. These options are also available within the Timing tab. More details on timing are available at Model Control Form → Timing/Linkage →Timing.
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