Improving Gate-Level Simulation Performance

Gate level simulation is used to improvise the confidence related to using a design and can help verify dynamic circuit behaviour. This cannot be done using just the static methods. It is an essential step in the verification process. This overcomes the static–timing analysis limitations and is increasingly being used due to complex timing checks and power problems check at 40nm and below, DTF insertion at low power consideration.

For Design for the test, scan chains are used after the gate-level netlist is made; this is usually used to analyze whether scan chains are accurate. Technology libraries at 45nm and less than that have far more complex timing checks and timing checks than older process nodes. This might take so much of the stimulation time and can take most of the debugging time. After RTL code is stimulated, it is run and synthesized into a gate-level netlist. It needs a full design reset.

• Improving gate-level simulation
• Apply Zero — delay simulation, which runs smoother and swifter than full timing simulation
• Delay mode control can be used to lessen simulation time.
• Disable delays in sections of the model where timing is not needed
• Detect zero–delay gate loops
• Make needed changes in race conditions that might happen in zero–delay mode
• Disable timing check
• Control the timing check violations
• Wave dumping to be used, if needed
• Use command-line options that offer extra details to access the objects for debugging
• Make use of the multi- snapshot incremental elaboration

Methodologies of improving gate-level simulation

This provides a more general look at methodologies that can lessen overall gate-level verification time. First, it shows how to make use of static tools, such as static timing analysis and linting, to reduce the time. Linting, for instance, must be used before getting zero–delay information. Static timing on the other hand offers details that are used to start the gate-level simulation with timing early in the flow.

• Using and generating standard delay format filed (SDF)
• Controlling the timing checks based on STA reports
• Using DFT verification
• Black–boxing modules can be used
• Saving and restarting the simulation

Gate–level computation in Dubai performance is not being just faster engines or simulation features. It is all about how well you use the methodologies. This content explores new methodologies and models that can improvise gate-level simulation productivity. With these approaches, you can aim at verifying real gate-level issues rather than wasting time on re-checking working circuits.

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