Stream Out/In GDS with cells coming from specified library only.

You'd probably need to use an approach similar to that covered in this article: SKILL code and shell script to stream out all or specified cells of a library to individual GDS files. The view name can be layout or any other name.

In particular, it talks about providing a cell name list - you may want to have some SKILL code which traverses the hierarchy and finds just the cells from the library of interest and records these in a file. There are countless examples on this forum showing how to do hierarchy traversal. Then you could use this file as the cell list mentioned in the above article.

You can't do this on stream in, because the stream file doesn't contain library information - so there's no way to know which cell came from which library.

This seems a slightly odd request, and it's not clear to me why you would need to do this.

Andrew

Thanks Andrew for your reply.

The above solution which you point out will stream out GDS of the cells from a library differently. (Example : if cellA and cellB are from "xyz" library then it export GDS as cellA.gds and cellB.gds.)

I want to preserve the coordinates from the original view and then stream out. Its like manually deleting all the cells coming of libraries other than "xyz" and then streaming out the GDS of that view.

I understand why it's not possible during stream In, but what if we make a list of cells from "xyz" library and then using the same list during stream In and deleting all other cells. 

I was hoping if there is some existing solution to it, which I might have missed or any new approach from more knowledgeable people. Time is also a constraint, as my macro is very big, I can't use an approach like flat each level and check for library name and continue till every cell is flat except cells from "xyz" lib.

-Amar

Amar,

My apologies - I thought the cell list approach wrote out a single file rather than individual files. If you use multiple cell names in the Top Cell(s) field instead, then it will put everything into a single stream file.

However, it won't do this:

amaru said:

Its like manually deleting all the cells coming of libraries other than "xyz" and then streaming out the GDS of that view.

That would just start from the given cells and include everything beneath them.

You could adapt this code - this would delete the instances in memory during the stream out process:

How can I skip/ignore some cells, beginning with a given prefix, during stream out? How to not stream out shapes on certain layers from certain cells during stream out?

Andrew