The main principle to consider when running with MPI is that EE will divide the model into several subdomains. Each subdomain will be simulated on the number of cores set by the user. How many subdomains are used to divide the model, and how to arrange those subdomains is also important and the method is explained below, however some experimentation may be needed to determine the optimal arrangement. Guiding principles for domain decomposition for running MPI are also provided here.
It is recommended that restart files be written as infrequently as reasonably possible to avoid reduced performance as EFDC+ writes out the output files.
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