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Hierarchically Layer generation

gparasiliti

Hi,

I need to generate a layer starting from other layers placed hierarchicaly in my layout, I used "layer generation" from layout menu but it works only in the cellview, I tried using skill commands but I don't know how I can get all layers from the instances placed in my cellview, off course my layout has many pcell placed.

Grazie,

Giuseppe

Parents

  • Zach,

    Of course, sarcasm will get you everywhere. I asked the questions because there was actually more than one solution proposed in the thread of this question (I'd suggested rteGeom.* functions in IC61), and also the code that Lawrence wrote works in all versions (so I don't know why you think it's for IC5141 only). Also, we often get posts on old threads which have little relation to the earlier posts. My point about your hardware was to say that you may suffer more than most if you are using such obsolete hardware.

    Anyway, putting that aside, I'll still try to help you. I took a look at Lawrence's code, and I suspect your problem is caused by the fact that it will flatten the hierarchy completely to the depth you specify - which is likely to be quite expensive, and also make the resulting operations slow because the database will be a huge flat database. Even if there are not many shapes on the layers you're actually processing, the total number of shapes on all layers would have a big impact on the performance.

    You may be able to adapt the code in Solution 11328674 as this is a bit more selective about the flattening it does. You could potentially miss out the merging part though (at the end of CCSflattenAndMerge()), and then call it twice on the two layers before you do the boolean operation.

    Regards,

    Andrew.

Reply

  • Zach,

    Of course, sarcasm will get you everywhere. I asked the questions because there was actually more than one solution proposed in the thread of this question (I'd suggested rteGeom.* functions in IC61), and also the code that Lawrence wrote works in all versions (so I don't know why you think it's for IC5141 only). Also, we often get posts on old threads which have little relation to the earlier posts. My point about your hardware was to say that you may suffer more than most if you are using such obsolete hardware.

    Anyway, putting that aside, I'll still try to help you. I took a look at Lawrence's code, and I suspect your problem is caused by the fact that it will flatten the hierarchy completely to the depth you specify - which is likely to be quite expensive, and also make the resulting operations slow because the database will be a huge flat database. Even if there are not many shapes on the layers you're actually processing, the total number of shapes on all layers would have a big impact on the performance.

    You may be able to adapt the code in Solution 11328674 as this is a bit more selective about the flattening it does. You could potentially miss out the merging part though (at the end of CCSflattenAndMerge()), and then call it twice on the two layers before you do the boolean operation.

    Regards,

    Andrew.

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