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about greedy legalization #151

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Panghy1106 opened this issue Aug 29, 2023 · 2 comments
Open

about greedy legalization #151

Panghy1106 opened this issue Aug 29, 2023 · 2 comments

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@Panghy1106
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Panghy1106 commented Aug 29, 2023

Dear Professor, how can I learn more about greedy legalization which is used in the legaliztion phase after macro legalization?
Legalization failed in my placement using dreamplace and I don't know why. It seems something error in greedy legalization.
And is overlap is normal after greedy legaliztion? How can solve the overlap? Looking forward to your reply.

@limbo018
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Could you share your LEF/DEF file? It might be that the macro legalization failed with huge displacement, which causes the failure of the follow-up cell legalization (greedy legalization).

@Panghy1106
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Panghy1106 commented Aug 30, 2023

Thank you for reply. I used bookshelf as input format. The files are attached.
I have tried to modify regulation in macro legalization stage,cells of which height is over row height will be regarded as marco. And in your implementation of macro legalization, cells with more than twice the row height will be regarded as macro. However,it still went wrong with overlaps in the follow-up greedy legalization.
Looking forward to your quick reply.
p_0.zip

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