Length of Simulation
The level of effort required to debug and then verify the design is proportional to the maturity of the design. That is, early in the design’s life, bugs and incorrect behavior are usually found quickly. As the design matures, the simulation will require more time and resources to run, and errors will take progressively longer to be found. This is particularly problematic when simulating components for modern-day systems; every component that changes state in a single clock cycle on the simulation will require several clock cycles to simulate.
A straightforward approach to this issue may be to emulate the circuit on a field-programmable gate array instead. Formal verification can also be explored as an alternative to simulation, although a formal proof is not always possible.
A prospective way to accelerate logic simulation is using distributed and parallel computations.
To help gauge the thoroughness of a simulation, tools exist for assessing code coverage, functional coverage and logic coverage tools.
Read more about this topic: Logic Simulation
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—Jonathan Raban (b. 1942)