how to simulate more faster with modelsim?

[kissmoh]

im using modelsim for simulation and more than 3 sec simulation time is needed
it spends more than 2 hours now, so i want to know the methods how to speed up of it.

the only thing im using is the waveform graphic, so other additional information is not needed.
there were some technique founded after searching the internet but it didnt show any noticeable changes.


i think if the additional process for calculating other information is removed, it will can be faster.
can someone teach me any technique?

 

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Waveform window kills performance if there are a lot of signals. Enable optimizations. And only enable visibility for specific modules you are trying to observe.

Regards

 

[TrickyDicky]

1. Make your testbench self checking so you do not need a waveform.
2. Remove the clocks from the waveform, or hide them inside signal groups.
3. dont use the -novopt switch
4. only simulate the logic you are interested in. Replace other modules with behavioural models.
5. Pay for a more expensive licence (the cheaper licences have a "go-slow" built into them).

 

[ads-ee]

To clarify, to enable visibility for a specific module(s).

vsim -voptargs=+acc=npr[+<module>[.]]

you can add as many module names (the optional '.' which includes submodules) as required (or none).
the npr specifies what is visible: i.e. net, ports, registers...another userfule one is t -for tasks and functions.
if you leave off the =npr then everything is visible for the specified optional modules.

I've never tried using the '.' as I prefer calling out the sub-modules directly.