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What is the best way to stream out a cellview that contains pcell instance

richardyuan

When I stream out the cellview that contains pcell install, i usually set the options with "Convert Pcells to Geometry" and "Convert Paths to Polygons" checked.

But after streaming out and streaming in,  the shapes didn't keep the related positions to the others as in the orginial cellview. 

I tried another way:

1. Flatten the pcell instance in the cellview first.

2. Merge the shape in same layer (will break the shape into pieces).

3. Stream out and stream in.

Now the shapes stand their positions well, though broken into pieces.

I don't like to flat the pcell instance, as it is convenient to save parameters in the cellview. 

Is there a better way to stream out? 

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  • tweeks

    There are lots of explanations for what's going on.  Maybe the wrong pcell code is getting loaded by stream out (or stream in).  Maybe stream out/in is just buggy.  Maybe if you flattened the pcell before streaming out, or converted it to a regular instance before streaming out, it would work better.

    Sorry I don't have good ideas--Andrew would probably have better suggestions, though really you should raise this with your local AE.

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  • tweeks

    There are lots of explanations for what's going on.  Maybe the wrong pcell code is getting loaded by stream out (or stream in).  Maybe stream out/in is just buggy.  Maybe if you flattened the pcell before streaming out, or converted it to a regular instance before streaming out, it would work better.

    Sorry I don't have good ideas--Andrew would probably have better suggestions, though really you should raise this with your local AE.

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