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The large range of possible modeling methods and system models available during this phase of design is made more extensive by the need to provide feedback to the pre-partition phase, to accept feedback from the next phase, and to be able to simulate with models from both the preceding and following phases.
There are therefore many possible simulation analyses that can be performed at this point in the design route. The importance of each analysis outcome to the final product must be considered before deciding on which system models to build and what analyses to perform. Is the performance of the product the most important, or is cost more important? Are power optimization and the form-factor (size) vital?