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How to get all the really used layer in the cellview .

Charley Chen

Hi All,

How to get all the really used layer in the cellview .

I use geGetEditCellView()~>lpps , it shows some layers that not really exists when stream out gdsii file from PIPO.LOG.

foreach(lpp geGetEditCellView()~>lpps

         printf("Layer is %L\n"  lpp)

 )

Thank you,

Charley

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  • Andrew Beckett

    Derek raises a good point - although to clarify you will get the lpps used for both the pcell superMaster (which is effectively the layout corresponding to the default parameters) and all pcell subMasters (i.e. all variants that exist).

    This means that if you have layers used in the default, but in none of the actual variants used, then cv~>lpps will list these too. It errs on the side of too many lpps rather than too few.

    If you really need to filter out which are truly not used, you'd have to use an approach such as Derek suggests.

    Andrew.

Reply
  • Andrew Beckett

    Derek raises a good point - although to clarify you will get the lpps used for both the pcell superMaster (which is effectively the layout corresponding to the default parameters) and all pcell subMasters (i.e. all variants that exist).

    This means that if you have layers used in the default, but in none of the actual variants used, then cv~>lpps will list these too. It errs on the side of too many lpps rather than too few.

    If you really need to filter out which are truly not used, you'd have to use an approach such as Derek suggests.

    Andrew.

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