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ncsim without any optimization

beatsonline
Hi, I want to run my behavioral model using ncsim without any optimization. I look at different option like -linedebug , -access +rwc but none will stop all the optimization like modelsim does with -novopt. Is there any equivalent option is NCSIM? I want to do this because my simulation is giving different results in optimized and non-optimized case using modelsim. What could be main reason? Thanks!!
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  • 99% of the issues like this are due to race-conditions in the Verilog model. If you have access to an account on support.cadence.com, do a search for "Race Conditions". There is an Application Note that explains what might be going on in your simulation. If you have an issue where the order in which events occur in a timestep affects the simulation results, removing more optimizations may not solve it since Verilog doesn't enforce any particular event order for its signal transitions.

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  • 99% of the issues like this are due to race-conditions in the Verilog model. If you have access to an account on support.cadence.com, do a search for "Race Conditions". There is an Application Note that explains what might be going on in your simulation. If you have an issue where the order in which events occur in a timestep affects the simulation results, removing more optimizations may not solve it since Verilog doesn't enforce any particular event order for its signal transitions.

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