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difference in running cadence simulation

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tariq786

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I am wondering what is the difference between these 4 ways of running simulation with cadence

1. three step method
ncvlog *.v
ncelab top_module_name (-nc_options)
ncsim top_module_name (-nc_options)

2. one step method
ncverilog *.v (+nc_options)

3.ncsim by GUI.
nclaunch &


4. irun command


And which one is the preferred way. What are the pros and cons of each.

I come from synopsys background therefore i am having trouble understanding so many options.

Thanks a lot.
 

Main ways is two: three(multi)-step method and one-step method.
irun was introduced instead old command ncverilog - it is one-step method
nclaunch - GUI mode like other simulators, nclaunch lets choose single-step method or multi-step method and define necessary option.
multi-step method more flexible, however most of features is available in one-step method
 
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