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find parameter dependencies in a PCell

VadimBorisov

Hi all,

Currently, I'm working on finding a way how to determine dependencies between parameters in the PCell generically.

F.i.

totalWidth = numberOfGates * Width

(in order to get totalWidth you need know (calculate) numberOfGates and Width)

Now I'm trying to extract a callBack function, but the issue sometimes a parameter has more 2-3 callback functions.

So, the question: Are there some useful SKILL functions which can help me? Or maybe there is an existing solution?

Best regards,

Vadim

  • Vadim,

    I think formally proving dependencies between parameters when the callback function can be something very complex - some foundries have callback functions (which are not readable either) which run to thousands of lines and call many other functions. Whilst SKILL has a reasonable number of introspection features - and you could parse the expressions to find some simple dependencies, I think it would be so error prone (or only able to handle very simple cases) that it's of dubious value.

    Regards,

    Andrew.

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