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Bug with dbLayerAndNot ?

lkphoto

I was wondering if there is a known bug with dbLayerAndNot. Indeed, if I write:

Diff = dbLayerAndNot(CellView list("diffphot"     "dataprep") ShapesB ShapesA NumVertices)

then I do not get all the “difference shapes” but just a random subset of them.
Instead, if I simply write the command twice:


Diff = dbLayerAndNot(CellView list("diffphot"     "dataprep") ShapesB ShapesA NumVertices)
Diff = dbLayerAndNot(CellView list("diffphot"     "dataprep") ShapesB ShapesA NumVertices)

then everything works fine.
Length of ShapesB, ShapesA is the same, before, after one call and after two calls. Length of Diff is the same
after one or two calls -still not all the shapes appear in Layout L.

I cannot share the entire code unfortunately, but I may upload a layout + example code (need to create one).
The error might depend from setting NumVertices = 10000. The error appears completely irrational after several debugging attempts.

I am using IC6.1.6.101

Thanks,
lkphoto

 

  • Andrew Beckett

    I don't know of a known bug, so I think I'd need to see something that shows the problem. If you can't share it here, please go to support.cadence.com and log a case so that we can take a look. 

    Thanks,

    Andrew 

  • theopaone

    lkphoto said:

    The error might depend from setting NumVertices = 10000. The error appears completely irrational after several debugging attempts.

     

     It's only a guess but the NumVerticies may contribute to your problem. Have you tried using something smaller like 1024?

     Ted

     

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