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innovus placement related issue

PacificFeng over 1 year ago

Dear all,

I have two questions:

(1) I am wondering if innovus has the function of global placement, which is w/o legalization.

(2) Can I costumize the goal of legalization? Or its cost function is fixed?

I have found so long, and still having no idea.

Thank you very much!

DimoM over 1 year ago

Hi,

you can turn off legalization and run the global placer only with the following command:

setPlaceMode -place_design_refine_place false
place_design

I am not aware of direct ways of modifying the cost function, at least not available to the public.

What you can do is, for example, modify the weight of certain nets with specifyNetWeight.

- Dimo
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PacificFeng over 1 year ago in reply to DimoM

Hi Dimo,

Thank you very much! I will try this way!

Best regards,

PacificFeng
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