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The basic requirements and restrictions for running any model with MPI were discussed under MPI on a Single Machine. This page focuses only on setting up the Windows cluster option, which allows a model to be run across multiple computers simultaneously. This option requires a main node where the model is set to run and any number of worker nodes. The configuration of this kind of system is relatively complicated and will likely require the support of an IT administrator. The setup requirements are described below. Guiding principles for domain decomposition for running MPI are also provided here.